US4152231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation cured polydiene based polymer composition
Assignee: Shell USA Inc
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Filing: 1978-10-26
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Granted: 1979-05-01
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Expires: 1998-10-26
Abstract
Abstract A cured polymer composition possessing excellent cohesive strength at high temperatures along with good solvent resistance and processing characteristics is prepared by the radiation curing of a composition comprising a linear or radial polydiene, tackifying resin, and a di-to-tetra-functional acrylate or methacrylate selected from the group consisting of acrylic and methacrylic acid esters of polyols.
Inventors
- 👤 David J. St. Clair
- 👤 David R. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:10
CPC Classifications
C; C08; C08F; C08F291/00; C08F279/00; C08F279/02; C08F287/00; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103; C08L; C08L53/00; C08L53/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/3188; Y10T428/31884
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
118 words
A cured composition possessing good processability, solvent resistance and high temperature cohesive strength prepared by the radiation curing of a polymer composition in an inert atmosphere, said polymer composition comprising: (a) 100 parts by weight of a linear or radial conjugated diene polymer selected from the group consisting of homopolymers of C 4 -C.sub. 12 conjugated dienes, copolymers of two or more C 4 -C.sub. 12 conjugated dienes, and the hydrogenated derivatives thereof; (b) about 0 to about 250 parts by weight of a tackifying resin; and (c) about 1 to about 100 parts by weight of a di- to tetrafunctional acrylate or methacrylate selected from the group consisting of the acrylic and methacrylic acid esters of polyols.
Claim 2
Dependent Claim
118 words
A cured composition possessing good processability, solvent resistance and high temperature cohesive strength prepared by the radiation curing of a polymer composition in an inert atmosphere, said polymer composition comprising: (a) 100 parts by weight of a linear or radial conjugated diene polymer selected from the group consisting of homopolymers of C 4 -C.sub. 12 conjugated dienes, copolymers of two or more C 4 -C.sub. 12 conjugated dienes, and the hydrogenated derivatives thereof; (b) about 0 to about 250 parts by weight of a tackifying resin; and (c) about 1 to about 100 parts by weight of a di- to tetrafunctional acrylate or methacrylate selected from the group consisting of the acrylic and methacrylic acid esters of polyols.
Claim 3
Dependent Claim
33 words
A composition according to claim 1 wherein said acrylate or methacrylate is selected from the group consisting of 1,6-hexane diol diacrylate, 1,6-hexane diol dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, pentaerythritol tetracrylate, and pentaerythritol tetramethacrylate.
Claim 4
Dependent Claim
12 words
A composition according to claim 2 wherein said methacrylate is trimethylolpropane trimethacrylate.
Claim 5
Dependent Claim
16 words
A composition according to claim 1 wherein the type of radiation cure is electron beam irradiation.
Claim 6
Dependent Claim
20 words
A composition according to claim 4 wherein the amount of radiation employed is between about 1 and about 50 megarads.
Claim 7
Dependent Claim
20 words
A composition according to claim 5 wherein the amount of radiation employed is between about 2 and about 25 megarads.
Claim 8
Dependent Claim
15 words
A composition according to claim 1 wherein the type of radiation cure is ultraviolet irradiation.
Claim 9
Dependent Claim
10 words
A composition according to claim 1 also including a photosensitizer.
Claim 10
Dependent Claim
41 words
A composition according to claim 1 wherein the conjugated diene polymer is a radial homopolymer having the formula A--x--(A) n where A is a homopolymer block of a conjugated diene, x is the coupling residue and n is greater than 7.
Claim 11
Dependent Claim
12 words
A composition according to claim 9 wherein A is a homopolyisoprene block.
Claim 12
Dependent Claim
42 words
A composition according to claim 1 wherein the conjugated diene polymer is a radial copolymer having the formula B--C--x--(C--B) n were C and B are polymer blocks of different conjugated dienes, x is the coupling residue, and n is greater than 7.
Claim 13
Dependent Claim
24 words
A composition according to claim 1 wherein the diene polymer also contains less than about 50 percent of a non-terminal monoalkenyl arene polymer block.
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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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |