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US4151319A
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Method for making a pressure sensitive adhesive coated laminate
Assignee: Decora Inc
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Filing: 1978-01-12
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Granted: 1979-04-24
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Expires: 1998-01-12
Abstract
Abstract A method for making a pressure sensitive adhesive coated laminate is disclosed. The method involves coating a sheet having a release surface thereon with a pressure sensitive adhesive to form a laminate, drying or curing the pressure sensitive adhesive and marrying the laminate to the inner surface of a facing layer. A material which produces a low zero-minute peel value in the pressure sensitive adhesive layer is intimately mixed with the pressure sensitive adhesive prior to the adhesive being coated on the release surface of the sheet. The resulting laminate can be easily applied to a substrate and removed and repositioned or straightened, if necessary, and provides an increase in peel value over a period of time to produce a more permanent installation. The laminate is suitable for use as decorative and/or protective covering as well as adhesive tapes, labels, and the like.
Inventors
- 👤 Martin M. Sackoff
- 👤 John R. Smith
- 👤 Billy E. Walling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:11
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/30; C09J7/38; C09J2203/00; C09J2203/306; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075; Y10T156/1084; Y10T428/00; Y10T428/14; Y10T428/1452; Y10T428/1457; Y10T428/28; Y10T428/2839; Y10T428/2848; Y10T428/2852; Y10T428/2878; Y10T428/2891
Claims Analysis
Total Claims: 84
Claim 1
Independent Claim
347 words
A method for making a laminate comprising coating a first sheet having a release surface thereon with a modified pressure sensitive adhesive to form a first laminate, subjecting said first laminate to conditions suitable to dry or cure the pressure sensitive adhesive, and marrying the pressure sensitive adhesive side of the thus treated first laminate to the inner surface of a facing layer having inner and outer surfaces; said modified pressure sensitive adhesive comprising a pressure sensitive adhesive and means for decreasing the "zero minute peel value" of the facing layer-pressure sensitive adhesive layer combination, said means comprising a polysiloxane intimately mixed with the pressure sensitive adhesive, said polysiloxane being formed from monomeric units having structures (I) and (II) as follows: ##STR4## wherein R 1 is selected from the group consisting of: (i) phenyl; (ii) methyl; (iii) tolyl; ##STR5## wherein R 7 and R 8 may be the same or different and may be hydrogen, methyl, or ethyl, and wherein when R 1 is group (i), (ii), (iii) or (iv), the prime mole percent of structure (I) is from about 0.5 to 50 and the prime mole percent of structure (II) is from about 99.5 to 50, and (v) polyoxyalkylene having the structural formula --R.sub.5 (OC.sub.2 H.sub.4).sub.n (OC.sub.3 H.sub.6).sub.m OR.sub.6 wherein R 6 is hydrogen or a monovalent hydrocarbon group having from 1 to 10 carbon atoms, R 5 is an alkylene group having at least two carbon atoms, n and m are zero or numbers, the sum of n and m is at least 1 and the oxyalkylene unit R 6 O(C 3 H 6 O) m (C 2 H 4 O) n , has a molecular weight of at least about 80, and wherein there are at least two units having structure (I) and at least three units having structure (II) and wherein the oxyalkylene unit constitutes from about 85 to 30 weight percent of the polysiloxane polymer; R 2 may be methyl, ethyl, or phenyl; and R 3 , and R 4 may be the same or different and may be methyl or ethyl.
Claim 2
Independent Claim
347 words
A method for making a laminate comprising coating a first sheet having a release surface thereon with a modified pressure sensitive adhesive to form a first laminate, subjecting said first laminate to conditions suitable to dry or cure the pressure sensitive adhesive, and marrying the pressure sensitive adhesive side of the thus treated first laminate to the inner surface of a facing layer having inner and outer surfaces; said modified pressure sensitive adhesive comprising a pressure sensitive adhesive and means for decreasing the "zero minute peel value" of the facing layer-pressure sensitive adhesive layer combination, said means comprising a polysiloxane intimately mixed with the pressure sensitive adhesive, said polysiloxane being formed from monomeric units having structures (I) and (II) as follows: ##STR4## wherein R 1 is selected from the group consisting of: (i) phenyl; (ii) methyl; (iii) tolyl; ##STR5## wherein R 7 and R 8 may be the same or different and may be hydrogen, methyl, or ethyl, and wherein when R 1 is group (i), (ii), (iii) or (iv), the prime mole percent of structure (I) is from about 0.5 to 50 and the prime mole percent of structure (II) is from about 99.5 to 50, and (v) polyoxyalkylene having the structural formula --R.sub.5 (OC.sub.2 H.sub.4).sub.n (OC.sub.3 H.sub.6).sub.m OR.sub.6 wherein R 6 is hydrogen or a monovalent hydrocarbon group having from 1 to 10 carbon atoms, R 5 is an alkylene group having at least two carbon atoms, n and m are zero or numbers, the sum of n and m is at least 1 and the oxyalkylene unit R 6 O(C 3 H 6 O) m (C 2 H 4 O) n , has a molecular weight of at least about 80, and wherein there are at least two units having structure (I) and at least three units having structure (II) and wherein the oxyalkylene unit constitutes from about 85 to 30 weight percent of the polysiloxane polymer; R 2 may be methyl, ethyl, or phenyl; and R 3 , and R 4 may be the same or different and may be methyl or ethyl.
Claim 3
Dependent Claim
37 words
The method of claim 1 wherein the polysiloxane is present in an amount effective to substantially decrease the "zero minute peel value" from the "zero minute peel value" of a control laminate wherein the polysiloxane is absent.
Claim 4
Dependent Claim
40 words
The method of claim 1 wherein the polysiloxane is present in an amount effective to decrease the "zero minute peel value" of the laminate by at least about 25 percent from the "zero minute peel value" of the control laminate.
Claim 5
Dependent Claim
45 words
The method of claim 1 wherein the polysiloxane is present in an amount effective to produce a "zero minute peel value" of less than about 600 grams on a stainless steel test surface and less than about 500 grams on "acrylic" and "SBR" test surfaces.
Claim 6
Dependent Claim
31 words
The method of claim 1 wherein the amount of polysiloxane present is in the range from about 0.001 to 20 percent based on the solids content of the pressure sensitive adhesive.
Claim 7
Dependent Claim
31 words
The method of claim 1 wherein the amount of polysiloxane present is in the range from about 0.1 to 1.0 percent based on the solids content of the pressure sensitive adhesive.
Claim 8
Dependent Claim
23 words
The method of claim 1 wherein R 1 is phenyl, and R 2 , and R 3 , and R 4 are methyl.
Claim 9
Dependent Claim
33 words
The method of claim 7 wherein the prime mole percent of structure (I) is from about 0.5 to 30 and the prime mole percent of structure (II) is from about 99.5 to 70.
Claim 10
Dependent Claim
27 words
The method of claim 8 wherein the prime mole percent of structure (I) is about 4.5 and the prime mole percent of structure (II) is about 95.5.
Claim 11
Dependent Claim
18 words
The method of claim 7 wherein the molecular weight of the polysiloxane is from about 35,000 to 250,000.
Claim 12
Dependent Claim
22 words
The method of claim 1 wherein R 1 is phenyl, R 2 is phenyl, and R 3 and R 4 are methyl.
Claim 13
Dependent Claim
39 words
The method of claim 1 wherein R 1 is methyl, the prime mole percents of structures (I) and (II) are equal and the viscosity of the polysiloxane is in the range from about 60×10 3 to 20×10 6 cps.
Claim 14
Dependent Claim
60 words
The method of claim 1, wherein R 1 is ##STR6## and R 7 and R 8 are hydrogen, the prime mole percent of structure (I) is from about 40.0 to 60.0 and the prime mole percent of structure (II) is from about 60.0 to 40.0, and the polysiloxane possesses a molecular weight from about 5×10 5 to 1×10 6 .
Claim 15
Dependent Claim
45 words
The method of claim 1 wherein R 1 is polyoxyalkylene and the oxyalkylene unit possesses a molecular weight of at least about 1500, wherein R 6 is a monovalent hydrocarbon group having from 1 to 10 carbon atoms, and contains both oxyethylene and oxypropylene units.
Claim 16
Dependent Claim
19 words
The method of claim 14 wherein the oxyalkylene unit comprises from about 15 to 60 weight percent oxylethylene units.
Claim 17
Dependent Claim
25 words
The method of claim 15 wherein there are at least about three units having structure (I) and at least about 40 units having structure (II).
Claim 18
Dependent Claim
16 words
The method of claim 16 wherein R 2 , R 3 and R 4 are methyl.
Claim 19
Dependent Claim
28 words
The method of claim 17 wherein the polysiloxane has a viscosity at room temperature of about 2,000 to 2,600 cps. measured with a #4 spindle at 30 rpm.
Claim 20
Dependent Claim
30 words
The method of claim 1 wherein R 1 , R 2 , R 3 and R 4 are methyl and the terminal groups of the polymer are hydroxy oxyalkylene units.
Claim 21
Dependent Claim
16 words
The method of claim 19 wherein the weight percent OH is from about 1.4 to 1.6.
Claim 22
Dependent Claim
19 words
The method of claim 20 wherein the oxyalkylene portion of the terminal group comprises oxypropylene units or oxyethylene units.
Claim 23
Dependent Claim
21 words
The method of claim 21 wherein the oxyalkylene portion has a molecular weight in the range from about 120 to 700.
Claim 24
Dependent Claim
30 words
The method of claim 1 wherein R 1 is polyoxyalkylene, R 6 is hydrogen, and the oxyalkylene unit possesses a molecular weight in the range from about 80 to 660.
Claim 25
Dependent Claim
16 words
The method of claim 23 wherein the weight percent OH is from about 0.9 to 4.5.
Claim 26
Dependent Claim
20 words
The method of claim 23 wherein the polysiloxane possesses a viscosity in the range from about 40 to 465 centistokes.
Claim 27
Dependent Claim
49 words
The method of claim 1 wherein the facing layer is selected from the group consisting of woven, knitted, and non-woven textile fabrics, metal foils, paper, a continuous film of a polymer selected from the group consisting of vinyl polymers, poyolefins, polyesters, and such polymeric films having metallic coatings thereon.
Claim 28
Dependent Claim
23 words
The method of claim 1, wherein the facing layer is itself composed of a bottom decorative layer and a top, transparent protective layer.
Claim 29
Dependent Claim
32 words
The method of claim 1, wherein the polysiloxane is intimately mixed with the pressure sensitive adhesive a substantial time prior to the coating of said first sheet with the pressure sensitive adhesive.
Claim 30
Dependent Claim
28 words
The method of claim 1, wherein the polysiloxane is intimately mixed with the pressure sensitive adhesive during the coating of said first sheet with the pressure sensitive adhesive.
Claim 31
Dependent Claim
57 words
The method of claim 1, wherein the outer surface of the facing layer possesses release properties and wherein, subsequent to the marrying step, the first sheet is peeled from the laminate to form a second laminate composed of the facing layer, and the modified pressure sensitive adhesive layer, and wherein the second laminate is rolled upon itself.
Claim 32
Independent Claim
341 words
A method for making a laminate comprising coating a facing layer having outer and inner surfaces with a layer of a modified pressure sensitive adhesive to form a first laminate, subjecting said first laminate to conditions suitable to dry or cure the pressure sensitive adhesive, and marrying the pressure sensitive adhesive side of the thus treated first laminate to a release surface; said modified pressure sensitive adhesive comprising a pressure sensitive adhesive and means for decreasing the "zero minute peel value" of the facing layer-pressure sensitive adhesive layer combination, said means comprising a polysiloxane intimately mixed with the pressure sensitive adhesive, said polysiloxane being formed from monomeric units having structures (I) and (II) as follows: ##STR7## wherein R 1 is selected from the group consisting of: (i) phenyl; (ii) methyl; (iii) tolyl; ##STR8## wherein R 7 and R 8 may be the same or different and may be hydrogen, methyl, or ethyl, and wherein when R 1 is group (i), (ii), (iii) or (iv), the prime mole percent of structure (I) is from about 0.5 to 50 and the prime mole percent of structure (II) is from about 99.5 to 50, and (v) polyoxyalkylene having the structural formula --R.sub.5 (OC.sub.2 H.sub.4).sub.n (OC.sub.3 H.sub.6).sub.m OR.sub.6 wherein R 6 is hydrogen or a monovalent hydrocarbon group having from 1 to 10 carbon atoms, R 5 is an alkylene group having at least two carbon atoms, n and m are zero or numbers, the sum of n and m is at least 1 and the oxyalkylene unit R 6 O(C 3 H 6 O) m (C 2 H 4 O) n , has a molecular weight of at least about 80, and wherein there are at least two units having structure (I) and at least three units having structure (II) and wherein the oxyalkylene unit constitutes from about 85 to 30 weight percent of the polysiloxane polymer; R 2 may be methyl, ethyl, or phenyl; and R 3 , and R 4 may be the same or different and may be methyl or ethyl.
Claim 33
Independent Claim
341 words
A method for making a laminate comprising coating a facing layer having outer and inner surfaces with a layer of a modified pressure sensitive adhesive to form a first laminate, subjecting said first laminate to conditions suitable to dry or cure the pressure sensitive adhesive, and marrying the pressure sensitive adhesive side of the thus treated first laminate to a release surface; said modified pressure sensitive adhesive comprising a pressure sensitive adhesive and means for decreasing the "zero minute peel value" of the facing layer-pressure sensitive adhesive layer combination, said means comprising a polysiloxane intimately mixed with the pressure sensitive adhesive, said polysiloxane being formed from monomeric units having structures (I) and (II) as follows: ##STR7## wherein R 1 is selected from the group consisting of: (i) phenyl; (ii) methyl; (iii) tolyl; ##STR8## wherein R 7 and R 8 may be the same or different and may be hydrogen, methyl, or ethyl, and wherein when R 1 is group (i), (ii), (iii) or (iv), the prime mole percent of structure (I) is from about 0.5 to 50 and the prime mole percent of structure (II) is from about 99.5 to 50, and (v) polyoxyalkylene having the structural formula --R.sub.5 (OC.sub.2 H.sub.4).sub.n (OC.sub.3 H.sub.6).sub.m OR.sub.6 wherein R 6 is hydrogen or a monovalent hydrocarbon group having from 1 to 10 carbon atoms, R 5 is an alkylene group having at least two carbon atoms, n and m are zero or numbers, the sum of n and m is at least 1 and the oxyalkylene unit R 6 O(C 3 H 6 O) m (C 2 H 4 O) n , has a molecular weight of at least about 80, and wherein there are at least two units having structure (I) and at least three units having structure (II) and wherein the oxyalkylene unit constitutes from about 85 to 30 weight percent of the polysiloxane polymer; R 2 may be methyl, ethyl, or phenyl; and R 3 , and R 4 may be the same or different and may be methyl or ethyl.
Claim 34
Dependent Claim
37 words
The method of claim 31 wherein the polysiloxane is present in an amount effective to substantially decrease the "zero minute peel value" from the "zero minute peel value" of a control laminate wherein the polysiloxane is absent.
Claim 35
Dependent Claim
39 words
The method of claim 31 wherein the polysiloxane is present in an amount effective to decrease the "zero minute peel value" of the laminate by at least about 25% from the "zero minute peel value" of the control laminate.
Claim 36
Dependent Claim
44 words
The method of claim 31 wherein the polysiloxane is present in an amount effective to produce a "zero minute peel value" of less than about 600 grams on a stainless steel test surface and less than about 500 grams on "acrylic" and "SBR"test surfaces.
Claim 37
Dependent Claim
31 words
The method of claim 31 wherein the amount of polysiloxane present is in the range from about 0.001 to 20 percent based on the solids content of the pressure sensitive adhesive.
Claim 38
Dependent Claim
31 words
The method of claim 31 wherein the amount of polysiloxane present is in the range from about 0.1 to 1.0 percent based on the solids content of the pressure sensitive adhesive.
Claim 39
Dependent Claim
23 words
The method of claim 31 wherein R 1 is phenyl, and R 2 , and R 3 , and R 4 are methyl.
Claim 40
Dependent Claim
33 words
The method of claim 37 wherein the prime mole percent of structure (I) is from about 0.5 to 30 and the prime mole percent of structure (II) is from about 99.5 to 70.
Claim 41
Dependent Claim
27 words
The method of claim 38 wherein the prime mole percent of structure (I) is about 4.5 and the prime mole percent of structure (II) is about 95.5.
Claim 42
Dependent Claim
18 words
The method of claim 37 wherein the molecular weight of the polysiloxane is from about 35,000 to 250,000.
Claim 43
Dependent Claim
22 words
The method of claim 31 wherein R 1 is phenyl, R 2 is phenyl, and R 3 and R 4 are methyl.
Claim 44
Dependent Claim
39 words
The method of claim 31 wherein R 1 is methyl, the prime mole percents of structures (I) and (II) are equal and the viscosity of the polysiloxane is in the range from about 60×10 3 to 20×10 6 cps.
Claim 45
Dependent Claim
61 words
The method of claim 31 wherein R 1 is ##STR9## and R 7 and R 8 8 are hydrogen, the prime mole percent of structure (I) is from about 40.0 to 60.0 and the prime mole percent of structure (II) is from about 60.0 to 40.0, and the polysiloxane possesses a molecular weight from about 5×10 5 to 1×10 6 .
Claim 46
Dependent Claim
45 words
The method of claim 31 wherein R 1 is polyoxyalkylene and the oxyalkylene unit possesses a molecular weight of at least about 1500, wherein R 6 is a monovalent hydrocarbon group having from 1 to 10 carbon atoms, and contains both oxyethylene and oxypropylene units.
Claim 47
Dependent Claim
19 words
The method of claim 44 wherein the oxyalkylene unit comprises from about 15 to 60 weight percent oxyethylene units.
Claim 48
Dependent Claim
25 words
The method of claim 45 wherein there are at least about three units having structure (I) and at least about 40 units having structure (II).
Claim 49
Dependent Claim
16 words
The method of claim 46 wherein R 2 , R 3 and R 4 are methyl.
Claim 50
Dependent Claim
28 words
The method of claim 47 wherein the polysiloxane has a viscosity at room temperature of about 2,000 to 2,600 cps. measured with a #4 spindle at 30 rpm.
Claim 51
Dependent Claim
30 words
The method of claim 31 wherein R 1 , R 2 , R 3 and R 4 are methyl and the terminal groups of the polymer are hydroxy oxyalkylene units.
Claim 52
Dependent Claim
16 words
The method of claim 49 wherein the weight percent OH is from about 1.4 to 1.6.
Claim 53
Dependent Claim
20 words
. The method of claim 50 wherein the oxyalkylene portion of the terminal group comprises oxypropylene units or oxyethylene units.
Claim 54
Dependent Claim
21 words
The method of claim 51 wherein the oxyalkylene portion has a molecular weight in the range from about 120 to 700.
Claim 55
Dependent Claim
30 words
The method of claim 31 wherein R 1 is polyoxyalkylene, R 6 is hydrogen, and the oxyalkylene unit possesses a molecular weight in the range from about 80 to 660.
Claim 56
Dependent Claim
16 words
The method of claim 53 wherein the weight percent OH is from about 0.9 to 4.5.
Claim 57
Dependent Claim
20 words
The method of claim 53 wherein the polysiloxane possesses a viscosity in the range from about 50 to 465 centistokes.
Claim 58
Dependent Claim
31 words
The method of claim 31 wherein the outer surface of the facing layer is the release surface and the marrying step is carried out by rolling the first laminate upon itself.
Claim 59
Dependent Claim
69 words
The method of claim 31 wherein the outer surface of the facing layer is the release surface and wherein the marrying step is carried out by cutting the second laminate into separate substantially equally sized pieces and stacking one piece upon another such that the pressure sensitive adhesive layer of one piece is next to the outer surface of the facing layer of the next piece in the stack.
Claim 60
Dependent Claim
10 words
A laminate made according to the method of claim 1.
Claim 61
Dependent Claim
10 words
A laminate made according to the method of claim 31.
Claim 62
Dependent Claim
256 words
A pressure sensitive adhesive composition comprising a mixture of a pressure sensitive adhesive and a polysiloxane, said polysiloxane being formed from monomeric units having structures (I) and (II) as follows: ##STR10## wherein R 1 is selected from the group consisting of: (i) phenyl; (ii) methyl; (iii) tolyl; ##STR11## wherein R 7 and R 8 may be the same or different and may be hydrogen, methyl, or ethyl, and wherein when R 1 is group (i), (ii), (iii) or (iv), the prime mole percent of structure (I) is from about 0.5 to 50 and the prime mole percent of structure (II) is from about 99.5 to 50, and (v) polyoxyalkylene having the structural formula --R.sub.5 (OC.sub.2 H.sub.4).sub.n (OC.sub.3 H.sub.6).sub.m OR.sub.6 wherein R 6 is hydrogen or a monovalent hydrocarbon group having from 1 to 10 carbon atoms, R 5 is an alkylene group having at least two carbon atoms, ln and m are zero or numbers, the sum of n and m is at least 1 and the oxyalkylene unit R 6 O(C 3 H 6 O) m (C 2 H 4 O) n , has a molecular weight of at least about 80, and wherein there are at least two units having structure (I) and at least three units having structure (II) and wherein the oxyalkylene unit constitutes from about 85 to 30 weight percent of the polysiloxane polymer; R 2 may be methyl, ethyl, or phenyl; and R 3 , and R 4 may be the same or different and may be methyl or ethyl.
Claim 63
Dependent Claim
256 words
A pressure sensitive adhesive composition comprising a mixture of a pressure sensitive adhesive and a polysiloxane, said polysiloxane being formed from monomeric units having structures (I) and (II) as follows: ##STR10## wherein R 1 is selected from the group consisting of: (i) phenyl; (ii) methyl; (iii) tolyl; ##STR11## wherein R 7 and R 8 may be the same or different and may be hydrogen, methyl, or ethyl, and wherein when R 1 is group (i), (ii), (iii) or (iv), the prime mole percent of structure (I) is from about 0.5 to 50 and the prime mole percent of structure (II) is from about 99.5 to 50, and (v) polyoxyalkylene having the structural formula --R.sub.5 (OC.sub.2 H.sub.4).sub.n (OC.sub.3 H.sub.6).sub.m OR.sub.6 wherein R 6 is hydrogen or a monovalent hydrocarbon group having from 1 to 10 carbon atoms, R 5 is an alkylene group having at least two carbon atoms, ln and m are zero or numbers, the sum of n and m is at least 1 and the oxyalkylene unit R 6 O(C 3 H 6 O) m (C 2 H 4 O) n , has a molecular weight of at least about 80, and wherein there are at least two units having structure (I) and at least three units having structure (II) and wherein the oxyalkylene unit constitutes from about 85 to 30 weight percent of the polysiloxane polymer; R 2 may be methyl, ethyl, or phenyl; and R 3 , and R 4 may be the same or different and may be methyl or ethyl.
Claim 64
Dependent Claim
34 words
The pressure sensitive adhesive composition of claim 60 wherein the amount of polysiloxane present is in the range from about 0.001 to 20 percent based on the solids content of the pressure sensitive adhesive.
Claim 65
Dependent Claim
34 words
The pressure sensitive adhesive composition of claim 60 wherein the amount of polysiloxane present is in the range from about 0.1 to 1.0 percent based on the solids content of the pressure sensitive adhesive.
Claim 66
Dependent Claim
26 words
The pressure sensitive adhesive composition of claim 60 wherein R 1 is phenyl, and R 2 , and R 3 , and R 4 are methyl.
Claim 67
Dependent Claim
36 words
The pressure sensitive adhesive composition of claim 63 wherein the prime mole percent of structure (I) is from about 0.5 to 30 and the prime mole percent of structure (II) is from about 99.5 to 70.
Claim 68
Dependent Claim
30 words
The pressure sensitive adhesive composition of claim 64 wherein the prime mole percent of structure (I) is about 4.5 and the prime mole percent of structure (II) is about 95.5.
Claim 69
Dependent Claim
21 words
The pressure sensitive adhesive composition of claim 63 wherein the molecular weight of the polysiloxane is from about 35,000 to 250,000.
Claim 70
Dependent Claim
25 words
The pressure sensitive adhesive composition of claim 60 wherein R 1 is phenyl, R 2 is phenyl, and R 3 and R 4 are methyl.
Claim 71
Dependent Claim
42 words
The pressure sensitive adhesive composition of claim 60 wherein R 1 is methyl, the prime mole percents of structures (I) and (II) are equal and the viscosity of the polysiloxane is in the range from about 60×10 3 to 20×10 6 cps.
Claim 72
Dependent Claim
63 words
The pressure sensitive adhesive composition of claim 60, wherein R 1 is ##STR12## and R 7 and R 8 are hydrogen, the prime mole percent of structure (I) is from about 40.0 to 60.0 and the prime mole percent of structure (II) is from about 60.0 to 40.0, and the polysiloxane possesses a molecular weight from about 5×10 5 to 1×10 6 .
Claim 73
Dependent Claim
48 words
The pressure sensitive adhesive composition of claim 60 wherein R 1 is polyoxyalkylene and the oxyalkylene unit possesses a molecular weight of at least about 1500, wherein R 6 is a monovalent hydrocarbon group having from 1 to 10 carbon atoms, and contains both oxyethylene and oxypropylene units.
Claim 74
Dependent Claim
22 words
The pressure sensitive adhesive composition of claim 70 wherein the oxyalkylene unit comprises from about 15 to 60 weight percent oxyethylene units.
Claim 75
Dependent Claim
28 words
The pressure sensitive adhesive composition of claim 71 wherein there are at least about three units having structure (I) and at least about 40 units having structure (II).
Claim 76
Dependent Claim
19 words
The pressure sensitive adhesive composition of claim 72 wherein R 2 , R 3 and R 4 are methyl.
Claim 77
Dependent Claim
31 words
The pressure sensitive adhesive composition of claim 73 wherein the polysiloxane has a viscosity at room temperature of about 2,000 to 2,600 cps. measured with a #4 spindle at 30 rpm.
Claim 78
Dependent Claim
33 words
The pressure sensitive adhesive composition of claim 60 wherein R 1 , R 2 , R 3 and R 4 are methyl and the terminal groups of the polymer are hydroxy oxyalkylene units.
Claim 79
Dependent Claim
19 words
The pressure sensitive adhesive composition of claim 75 wherein the weight percent OH is from about 1.4 to 1.6.
Claim 80
Dependent Claim
22 words
The pressure sensitive adhesive composition of claim 76 wherein the oxyalkylene portion of the terminal group comprises oxypropylene units or oxyethylene units.
Claim 81
Dependent Claim
24 words
The pressure sensitive adhesive composition of claim 77 wherein the oxyalkylene portion has a molecular weight in the range from about 120 to 700.
Claim 82
Dependent Claim
33 words
The pressure sensitive adhesive composition of claim 60 wherein R 1 is polyoxyalkylene, R 6 is hydrogen, and the oxyalkylene unit possesses a molecular weight in the range from about 80 to 660.
Claim 83
Dependent Claim
19 words
The pressure sensitive adhesive composition of claim 79 wherein the weight percent OH is from about 0.9 to 4.5.
Claim 84
Dependent Claim
23 words
The pressure sensitive adhesive composition of claim 79 wherein the polysiloxane possesses a viscosity in the range from about 40 to 465 centistokes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |