US4005247A
Expired / Lapsed
US
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Pressure sensitive adhesive compositions
Assignee: Ashland LLC
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Filing: 1975-10-30
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Granted: 1977-01-25
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Expires: 1995-10-30
Abstract
Abstract Pressure-sensitive adhesives having improved cohesive strength are obtained by reacting an acrylic interpolymer containing an interpolymerized acrylic monomer containing an ethylenically unsaturated carboxylic acid anhydride with a metal alkoxide, chelated metal alkoxides such as chelated titanium esters being particularly preferred. Adhesives produced in this manner have improved cohesive strength on backings while maintaining good tack and adhesive properties.
Inventors
- 👤 Curtis Michael Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0091; C08F; C08F8/00; C08F8/42; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/062; C09J133/064; C08L; C08L2666/00; C08L2666/28; C08L2666/34; C09J2301/00; C09J2301/30; C09J2301/302; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2857; Y10T428/2878; Y10T428/2891
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
235 words
A pressure-sensitive adhesive composition which when dry forms a tacky adhesive of high cohesive strength, said composition comprising an adhesive polymer formed by the reaction of A. a normally tacky interpolymer of monomers consisting essentially 1. at least 40 percent by weight of one or more alkyl acrylates having up to about 18 carbon atoms in the alkyl group, 2. at least about 0.2% of an α - β unsaturated acid anhydride 3. up to about 59.8 percent of one or more copolymerizable monomers containing an ethylenically unsaturated linkage as the only reaction functional group, said copolymerizable monomers having no more than 25 carbon atoms in the molecule; and B. a metal alkoxide having the formula R n T(OR 1 ) z wherein T is a metal selected from the group consisting of Groups II, III, IV, and V of the Periodic Table, R is selected from the group consisting of alkyl radicals of from 1 to 8 carbon atoms and aryl radicals of from 6 to 16 carbon atoms, R 1 is selected from the group consisting of aliphatic and substituted aliphatic radicals containing from 1 to 18 carbon atoms, n is an integer whose value is 0 or greater and z is an integer whose value is at least 2 wherein the sum of n + z is greater than 1 and is equal to the valence of the metal represented by T.
Claim 2
Dependent Claim
235 words
A pressure-sensitive adhesive composition which when dry forms a tacky adhesive of high cohesive strength, said composition comprising an adhesive polymer formed by the reaction of A. a normally tacky interpolymer of monomers consisting essentially 1. at least 40 percent by weight of one or more alkyl acrylates having up to about 18 carbon atoms in the alkyl group, 2. at least about 0.2% of an α - β unsaturated acid anhydride 3. up to about 59.8 percent of one or more copolymerizable monomers containing an ethylenically unsaturated linkage as the only reaction functional group, said copolymerizable monomers having no more than 25 carbon atoms in the molecule; and B. a metal alkoxide having the formula R n T(OR 1 ) z wherein T is a metal selected from the group consisting of Groups II, III, IV, and V of the Periodic Table, R is selected from the group consisting of alkyl radicals of from 1 to 8 carbon atoms and aryl radicals of from 6 to 16 carbon atoms, R 1 is selected from the group consisting of aliphatic and substituted aliphatic radicals containing from 1 to 18 carbon atoms, n is an integer whose value is 0 or greater and z is an integer whose value is at least 2 wherein the sum of n + z is greater than 1 and is equal to the valence of the metal represented by T.
Claim 3
Dependent Claim
19 words
The adhesive composition of claim 1 in which said chelated metal alkoxide is a chelated ester of titanic acid.
Claim 4
Dependent Claim
32 words
The adhesive composition of claim 1 in which said adhesive polymer is dissolved in liquid organic solvent comprising at least about 20 percent by weight of one or more substantially anhydrous alcohols.
Claim 5
Dependent Claim
27 words
The adhesive composition of clain 1 in which said alkyl acrylates have an average of from about 4 to about 10 carbon atoms in the alkyl groups.
Claim 6
Dependent Claim
27 words
The adhesive composition of clain 1 in which said alkyl acrylates have an average of from about 4 to about 10 carbon atoms in the alkyl groups.
Claim 7
Dependent Claim
29 words
The adhesive composition of claim 1 in which said interpolymer contains from about 10 to about 59.8 percent by weight of a vinyl ester of a saturated monocarboxylic acid.
Claim 8
Dependent Claim
27 words
The adhesive composition of claim 1 in which said interpolymer contains from about 0.2 to about 20 percent by weight of α - β unsaturated acid anhydride.
Claim 9
Dependent Claim
36 words
The adhesive composition of claim 1 in which the chelated metal alkoxide is present in an amount between about 0.05 and about 5.0 percent of the total weight of the interpolymer and the chelated metal alkoxide.
Claim 10
Dependent Claim
16 words
The adhesive composition of claim 1 wherein the chelated metal alkoxide is a chelated titanium acetonate.
Claim 11
Dependent Claim
10 words
The adhesive composition of claim 1 comprising excess chelating agent.
Claim 12
Dependent Claim
82 words
A pressure-sensitive adhesive composition which when dry forms a tacky adhesive of high cohesive strength, said composition comprising an adhesive polymer formed by the reaction of A. a normally tacky interpolymer of monomers consisting essentially of 1. at least about 40 percent by weight of one or more alkyl acrylates having an average of from about 4 to about 10 carbon atoms in the alkyl groups, 2. from about 0.2% to about 20% by weight of α - β unsaturated acid anhydride,
Claim 13
Dependent Claim
82 words
A pressure-sensitive adhesive composition which when dry forms a tacky adhesive of high cohesive strength, said composition comprising an adhesive polymer formed by the reaction of A. a normally tacky interpolymer of monomers consisting essentially of 1. at least about 40 percent by weight of one or more alkyl acrylates having an average of from about 4 to about 10 carbon atoms in the alkyl groups, 2. from about 0.2% to about 20% by weight of α - β unsaturated acid anhydride,
Claim 14
Dependent Claim
165 words
up to about 59.8 percent by weight of one or more copolymerizable monomers containing an ethylenically unsaturated linkage as the only reactive functional group, said copolymerizable monomers having no more than 25 carbon atoms in the molecule; and B. a metal alkoxide having the formula R n T (OR 1 ) z wherein T is a metal selected from the group consisting of Groups II, III IV, and V of the Periodic Table, R is selected from the group consisting of alkyl radicals of from 1 to 8 carbon atoms and aryl radicals of from 6 to 16 carbon atoms, R 1 is selected from the group consisting of aliphatic and substituted aliphatic radicals containing from 1 to 18 carbon atoms, n is an integer whose value is 0 or greater and z is an integer whose value is at least 2 wherein the sum of n + z is greater than 1 and is equal to the valence of the metal represented by T.
Claim 15
Dependent Claim
165 words
up to about 59.8 percent by weight of one or more copolymerizable monomers containing an ethylenically unsaturated linkage as the only reactive functional group, said copolymerizable monomers having no more than 25 carbon atoms in the molecule; and B. a metal alkoxide having the formula R n T (OR 1 ) z wherein T is a metal selected from the group consisting of Groups II, III IV, and V of the Periodic Table, R is selected from the group consisting of alkyl radicals of from 1 to 8 carbon atoms and aryl radicals of from 6 to 16 carbon atoms, R 1 is selected from the group consisting of aliphatic and substituted aliphatic radicals containing from 1 to 18 carbon atoms, n is an integer whose value is 0 or greater and z is an integer whose value is at least 2 wherein the sum of n + z is greater than 1 and is equal to the valence of the metal represented by T.
Claim 16
Dependent Claim
32 words
The adhesive composition of claim 10 in which said adhesive polymer is dissolved in liquid organic solvent comprising at least about 20 percent by weight of one or more substantially anhydrous alcohols.
Claim 17
Dependent Claim
14 words
The adhesive composition of claim 11 in which said alcohol is a lower alkanol.
Claim 18
Dependent Claim
28 words
The adhesive compositon of claim 10 in which said interpolymer contains from about 0.2 to about 20 percent by weight of α - β ethylenically unsaturated acid anhydride.
Claim 19
Dependent Claim
13 words
The adhesive composition of claim 13 in which said acid anhydride is maleic.
Claim 20
Dependent Claim
29 words
The adhesive composition of claim 10 in which said interpolymer contains from about 10 to about 59.8 percent by weight of a vinyl ester of a saturated monocarboxylic acid.
Claim 21
Dependent Claim
34 words
The adhesive composition of claim 10 in which said metal alkoxide is present in an amount between about 0.05 and about 5 percent of the total weight of the interpolymer and the metal alkoxide.
Claim 22
Dependent Claim
17 words
The adhesive composition of claim 10 wherein the metal alkoxide is an organic ester of titanic acid.
Claim 23
Dependent Claim
15 words
The adhesive composition of claim 10 wherein the metal alkoxide is a chelated metal alkoxide.
Claim 24
Dependent Claim
11 words
The adhesive composition of claim 18 additionally comprising a chelating agent.
Claim 25
Dependent Claim
20 words
A pressure-sensitive adhesive coated article comprising a backing member having thereon a layer of the adhesive composition of claim 1.
Claim 26
Dependent Claim
20 words
A pressure-sensitive adhesive coated article comprising a backing member having thereon a layer of the adhesive composition of claim 10.
Claim 27
Dependent Claim
15 words
A pressure-sensitive film adhesive comprising a dried film of the adhesive composition of claim 1.
Claim 28
Dependent Claim
15 words
A pressure-sensitive film adhesive comprising a dried film of the adhesive composition of claim 10.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |