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US4865920A
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Hot-melt pressure sensitive adhesive article and method of making
Assignee: Dow Silicones Corp
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Filing: 1988-09-20
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Granted: 1989-09-12
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Expires: 2008-09-20
Abstract
Abstract A hot-melt silicone pressure sensitive adhesive composition comprising (i) a silicon resin, (ii) a silicone fluid, and (iii) 1 to 10 weight percent based on the total weight of said silicone resin and said silicone fluid, an ester having the formula: ##STR1## wherein R is a monovalent hydrocarbon radical having from 2 to 32 carbon atoms, and R' is a monovalent hydrocarbon radical having from 1 to 14 carbon atoms.
Inventors
- 👤 Randall P. Sweet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:21
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/11; C08L; C08L83/00; C09; C09J; C09J183/00; C09J183/04; C09J7/00; C09J7/30; C09J7/38; C08L2666/00; C08L2666/28; C08L2666/34; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
122 words
A method of making a silicone pressure sensitive adhesive-coated substrate comprising the steps of: (A) heating, to a coatable temperature above 25° C., a silicone pressure sensitive adhesive composition comprising (i) a silicone resin, (ii) a silicone fluid, and (iii) 1 to 10 weight percent based on the total weight of said silicone resin and said silicone fluid, an ester having the formula: ##STR4## wherein R is a monovalent hydrocarbon radical having from 2 to 32 carbon atoms, and R' is a monovalent hydrocarbon radical having from 1 to 14 carbon atoms, (B) coating said heated silicone pressure sensitive adhesive composition on said subsrate, and (C) cooling the coated silicone pressure sensitive adhesive composition until it is in a generally nonfluid state.
Claim 2
Independent Claim
122 words
A method of making a silicone pressure sensitive adhesive-coated substrate comprising the steps of: (A) heating, to a coatable temperature above 25° C., a silicone pressure sensitive adhesive composition comprising (i) a silicone resin, (ii) a silicone fluid, and (iii) 1 to 10 weight percent based on the total weight of said silicone resin and said silicone fluid, an ester having the formula: ##STR4## wherein R is a monovalent hydrocarbon radical having from 2 to 32 carbon atoms, and R' is a monovalent hydrocarbon radical having from 1 to 14 carbon atoms, (B) coating said heated silicone pressure sensitive adhesive composition on said subsrate, and (C) cooling the coated silicone pressure sensitive adhesive composition until it is in a generally nonfluid state.
Claim 3
Dependent Claim
16 words
A method as claimed in claim 1 wherein said silicone pressure sensitive adhesive composition is nonflammable.
Claim 4
Dependent Claim
15 words
A method as claimed in claim 1 wherein said coatable temperature is above 100° C.
Claim 5
Dependent Claim
14 words
A pressure sensitive adhesive-coated substrate prepared by the method as claimed in claim 3.
Claim 6
Dependent Claim
15 words
A method as claimed in claim 1 wherein said coatable temperature is above 150° C.
Claim 7
Dependent Claim
14 words
A pressure sensitive adhesive-coated substrate prepared by the method as claimed in claim 5.
Claim 8
Dependent Claim
27 words
A method as claimed in claim 1 wherein R and R' are each selected from the group consisting of aryl, alkyl, cycloalkyl, hydroxyalkyl, alkenyl, and aralkyl radicals.
Claim 9
Dependent Claim
14 words
A pressure sensitive adhesive-coated substrate prepared by the method as claimed in claim 7.
Claim 10
Dependent Claim
35 words
A method as claimed in claim 1 wherein R is a monovalent hydrocarbon radical having from 10 to 19 carbon atoms and R' is a monovalent hydrocarbon radical having from 1 to 3 carbon atoms.
Claim 11
Dependent Claim
14 words
A pressure sensitive adhesive-coated substrate prepared by the method as claimed in claim 9.
Claim 12
Dependent Claim
31 words
A method as claimed in claim 1 wherein said ester is employed from 1 to 7 weight percent based on the total weight of said silicone resin and said silicone fluid.
Claim 13
Dependent Claim
14 words
A pressure sensitive adhesive-coated substrate prepared by the method as claimed in claim 11.
Claim 14
Dependent Claim
47 words
A method as claimed in claim 1 wherein said ester is selected from the group consisting of 1-phenylethylpropionate, linolec acid ethyl ester, dodecyl acetate, ethyl triacontanoate, octyl acetate, methyl caproate, methyl decanoate, isobutyl acetate, methyl docosanoate, methyl heptadeconate, isopropylpalmitate, isopropylmyristate, lauric acid methyl ester, and mixtures thereof.
Claim 15
Dependent Claim
14 words
A pressure sensitive adhesive-coated substrate prepared by the method as claimed in claim 1.
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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) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |