Patent US4294936A successfully refreshed from Google Patents.
US4294936A
Expired / Lapsed
US
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Adhesive compositions
Assignee: Permacel
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Filing: 1980-05-05
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Granted: 1981-10-13
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Expires: 2000-05-05
Abstract
Abstract Pressure-sensitive adhesive compositions having solvent resistant properties comprising (a) a synthetic rubbery thermoplastic block-copolymer, (b) a polyester and (c) a tackifier resin.
Inventors
- 👤 Ralf Korpman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:52
CPC Classifications
C; C09; C09J; C09J153/00; C09J153/02; C09J7/00; C09J7/30; C09J7/38; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/14; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/2883
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
168 words
A pressure-sensitive adhesive composition comprising a synthetic thermoplastic rubbery block copolymer, a non-rubbery polymer and a tackifier resin, wherein said rubbery block polymer is a copolymer of an alkenylarene A block and an aliphatic diene B block in which the alkenylarene is a polymer of styrene, a ring lower alkyl substituted styrene, a ring phenyl lower-alkyl substituted styrene, a ring (lower alkyl substituted) phenyl lower alkyl substituted styrene or a ring cyclohexyl substituted styrene and the aliphatic diene is a conjugated lower aliphatic diene of from 4 to 6 carbon atoms inclusive and said non-rubbery polymer is a copolyester, said copolyester being a polymer of at least two different ester units, each ester unit being a condensation product of a dicarboxylic acid and an alkylene diol of from 2 to 6 carbon atoms; and wherein for every 100 parts of rubbery block copolymer there is employed from about 5 to about 50 parts of the non-rubbery polymer and from about 20 to about 150 parts of tackifier resin.
Claim 2
Dependent Claim
168 words
A pressure-sensitive adhesive composition comprising a synthetic thermoplastic rubbery block copolymer, a non-rubbery polymer and a tackifier resin, wherein said rubbery block polymer is a copolymer of an alkenylarene A block and an aliphatic diene B block in which the alkenylarene is a polymer of styrene, a ring lower alkyl substituted styrene, a ring phenyl lower-alkyl substituted styrene, a ring (lower alkyl substituted) phenyl lower alkyl substituted styrene or a ring cyclohexyl substituted styrene and the aliphatic diene is a conjugated lower aliphatic diene of from 4 to 6 carbon atoms inclusive and said non-rubbery polymer is a copolyester, said copolyester being a polymer of at least two different ester units, each ester unit being a condensation product of a dicarboxylic acid and an alkylene diol of from 2 to 6 carbon atoms; and wherein for every 100 parts of rubbery block copolymer there is employed from about 5 to about 50 parts of the non-rubbery polymer and from about 20 to about 150 parts of tackifier resin.
Claim 3
Dependent Claim
15 words
A composition according to claim 1 wherein said block copolymer comprises an A-B-A block copolymer.
Claim 4
Dependent Claim
15 words
A composition according to claim 1 wherein said block copolymer comprises an A-B block copolymer.
Claim 5
Dependent Claim
68 words
A pressure-sensitive adhesive composition according to claim 1 comprising a thermoplastic rubber block copolymer of a polystyrene A block and an isoprene B block, a non-rubbery copolymer of a copolyester and a tackifier resin, said copolyester being a polymer of at least two different ester units, each ester unit being condensation product of a dicarboxylic acid and an alkylene diol of from 2 to 6 carbon atoms inclusive.
Claim 6
Dependent Claim
15 words
A composition according to claim 4 wherein the block copolymer comprises a styrene-isoprene-styrene block copolymer.
Claim 7
Dependent Claim
15 words
A composition according to claim 4 wherein the block copolymer comprises a styrene-isoprene block copolymer.
Claim 8
Dependent Claim
14 words
A composition according to claim 4 wherein the copolyester is a poly(ethylene terephthalate-co-ethylene azelate).
Claim 9
Dependent Claim
24 words
A composition according to claim 1 wherein the alkylene diol of the copolyester is an alkylene diol having from 2 to 4 carbon atoms.
Claim 10
Dependent Claim
177 words
A normally tacky and pressure-sensitive adhesive sheet which comprises a relatively thin flexible backing sheet and coated thereon, a pressure-sensitive adhesive composition, said composition comprising a rubbery block copolymer, from about 5 to 50 parts of a non-rubbery block copolymer for every 100 parts of the rubbery block copolymer and from about 20 to 150 parts of tackifier resins for every 100 parts of rubbery block copolymer, wherein said rubbery block copolymer is a copolymer of an alkenylarene A block and an aliphatic diene B block in which the alkenylarene is a polymer of styrene, a ring lower alkyl substituted styrene, a ring phenyl lower-alkyl substituted styrene, a ring (lower alkyl substituted) phenyl lower alkyl substituted styrene or a ring cyclohexyl substituted styrene and the aliphatic diene is a conjugated lower aliphatic diene of from 4 to 6 carbon atoms, and said non-rubbery polymer is a copolyester of at least two different ester units, each ester unit being a condensation product of a dicarboxylic acid and a alkylene diol of from 2 to 6 carbon atoms inclusive.
Claim 11
Dependent Claim
177 words
A normally tacky and pressure-sensitive adhesive sheet which comprises a relatively thin flexible backing sheet and coated thereon, a pressure-sensitive adhesive composition, said composition comprising a rubbery block copolymer, from about 5 to 50 parts of a non-rubbery block copolymer for every 100 parts of the rubbery block copolymer and from about 20 to 150 parts of tackifier resins for every 100 parts of rubbery block copolymer, wherein said rubbery block copolymer is a copolymer of an alkenylarene A block and an aliphatic diene B block in which the alkenylarene is a polymer of styrene, a ring lower alkyl substituted styrene, a ring phenyl lower-alkyl substituted styrene, a ring (lower alkyl substituted) phenyl lower alkyl substituted styrene or a ring cyclohexyl substituted styrene and the aliphatic diene is a conjugated lower aliphatic diene of from 4 to 6 carbon atoms, and said non-rubbery polymer is a copolyester of at least two different ester units, each ester unit being a condensation product of a dicarboxylic acid and a alkylene diol of from 2 to 6 carbon atoms inclusive.
Claim 12
Independent Claim
149 words
A method for imparting solvent resistance to pressure-sensitive adhesives of thermoplastic rubbery block copolymers which comprises incorporating from 5 to 50 parts of a copolyester for every 100 parts of block copolymer and 20 to 150 parts of tackifier resin; wherein said rubbery block copolymer is a copolymer of an alkenylarene A block and an aliphatic diene B block in which the alkenylarene is a polymer of styrene, a ring lower alkyl substituted styrene, a ring phenyl lower-alkyl substituted styrene, a ring (lower alkyl substituted) phenyl lower alkyl substituted styrene or a ring cyclohexyl substituted styrene and the aliphatic diene is a conjugated lower aliphatic diene of from 4 to 6 carbon atoms, and said copolyester is a polymer of at least two different ester units, each ester unit being a condensation product of a dicarboxylic acid and an alkylene diol of from 2 to 6 carbon atoms inclusive.
Claim 13
Independent Claim
149 words
A method for imparting solvent resistance to pressure-sensitive adhesives of thermoplastic rubbery block copolymers which comprises incorporating from 5 to 50 parts of a copolyester for every 100 parts of block copolymer and 20 to 150 parts of tackifier resin; wherein said rubbery block copolymer is a copolymer of an alkenylarene A block and an aliphatic diene B block in which the alkenylarene is a polymer of styrene, a ring lower alkyl substituted styrene, a ring phenyl lower-alkyl substituted styrene, a ring (lower alkyl substituted) phenyl lower alkyl substituted styrene or a ring cyclohexyl substituted styrene and the aliphatic diene is a conjugated lower aliphatic diene of from 4 to 6 carbon atoms, and said copolyester is a polymer of at least two different ester units, each ester unit being a condensation product of a dicarboxylic acid and an alkylene diol of from 2 to 6 carbon atoms inclusive.
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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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |