Patent US3985829A successfully refreshed from Google Patents.
US3985829A
Expired / Lapsed
US
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High impact polyblends from hydrogenated butadiene polymers
Assignee: GE Chemicals Inc
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Filing: 1974-06-19
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Granted: 1976-10-12
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Expires: 1994-06-19
Abstract
Abstract High impact thermoplastic polyblend compositions prepared by polymerizing vinylaromatic and/or vinyl nitrile monomers in the presence of rubbery substrates of fully hydrogenated 1,2-polymerized butadiene and copolymers thereof. The products exhibit surprisingly high impact and tensile properties despite a very low content of graft polymer.
Inventors
- 👤 John C. Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:58
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
118 words
A thermoplastic polyblend composition comprising the product of the free-radical polymerization of from 95 to 40 parts by weight of at least one vinyl monomer selected from the group consisting of styrene, alpha-methyl styrene, vinyl toluene, acrylonitrile, alpha-chloroacrylonitrile, methacrylonitrile, methyl acrylate and methyl methacrylate, said polymerization having been carried out in the presence of from 5 to 60 parts by weight of a hydrogenated rubbery polymer selected from the group consisting of homopolymers and copolymers of 1,3-butadiene having greater than 30% of the butadiene units as 1,2-polymerized units, said rubbery polymer having had substantially all ethylenic unsaturation removed by hydrogenation, wherein no greater than 5% of the product of the free-radical polymerization is grafted to the rubbery polymer.
Claim 2
Dependent Claim
118 words
A thermoplastic polyblend composition comprising the product of the free-radical polymerization of from 95 to 40 parts by weight of at least one vinyl monomer selected from the group consisting of styrene, alpha-methyl styrene, vinyl toluene, acrylonitrile, alpha-chloroacrylonitrile, methacrylonitrile, methyl acrylate and methyl methacrylate, said polymerization having been carried out in the presence of from 5 to 60 parts by weight of a hydrogenated rubbery polymer selected from the group consisting of homopolymers and copolymers of 1,3-butadiene having greater than 30% of the butadiene units as 1,2-polymerized units, said rubbery polymer having had substantially all ethylenic unsaturation removed by hydrogenation, wherein no greater than 5% of the product of the free-radical polymerization is grafted to the rubbery polymer.
Claim 3
Dependent Claim
16 words
The polyblend of claim 1 wherein the vinyl monomer comprises a mixture of styrene and acrylonitrile.
Claim 4
Dependent Claim
18 words
The polyblend of claim 1 wherein the vinyl monomer comprises a mixture of styrene, acrylonitrile and alpha-methyl styrene.
Claim 5
Dependent Claim
17 words
The polyblend of claim 1 wherein the vinyl monomer comprises a mixture of styrene and methyl methacrylate.
Claim 6
Dependent Claim
14 words
The polyblend of claim 1 wherein the rubbery polymer is a homopolymer of 1,3-butadiene.
Claim 7
Dependent Claim
89 words
A process for preparing a thermoplastic polyblend composition comprising contacting a hydrogenated rubbery polymer selected from the group consisting of homopolymers and copolymers of 1,3-butadiene containing at least 30% of the butadiene units as 1,2-polymerized monomer units, said rubbery polymer having had substantially all ethylenic unsaturation removed by hydrogenation, with at least one vinyl monomer, under a free-radical polymerization conditions whereby free-radical polymerization of the vinyl monomer results to give said polyblend composition having no greater than 5% of the vinyl monomer polymerization product grafted to the rubbery polymer.
Claim 8
Dependent Claim
89 words
A process for preparing a thermoplastic polyblend composition comprising contacting a hydrogenated rubbery polymer selected from the group consisting of homopolymers and copolymers of 1,3-butadiene containing at least 30% of the butadiene units as 1,2-polymerized monomer units, said rubbery polymer having had substantially all ethylenic unsaturation removed by hydrogenation, with at least one vinyl monomer, under a free-radical polymerization conditions whereby free-radical polymerization of the vinyl monomer results to give said polyblend composition having no greater than 5% of the vinyl monomer polymerization product grafted to the rubbery polymer.
Claim 9
Dependent Claim
43 words
The process of claim 6 wherein the rubbery polymer comprises from 5 to 60% by weight of the composition and the vinyl monomer is selected from the group consisting of styrene, alpha-methyl styrene, vinyl toluene, acrylonitrile, alpha-chloroacrylonitrile, methacrylonitrile, methyl methacrylate and methyl acrylate.
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) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |