US4886856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Functionalized elastomers blended with polar copolymers of styrene and acrylic acid methacrylic acid or maleic anhydride
Assignee: Dow Chemical Co
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Filing: 1987-11-27
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Granted: 1989-12-12
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Expires: 2007-11-27
Abstract
Abstract Novel graft copolymer elastomers comprising a rubbery substrate polymer and a graft copolymer of a monomer capable of grafting to the rubbery substrate and a copolymerizable comonomer having pendant reactive groups capable of functionally reacting with reactive polar functionality of a copolymer of a monovinylidene aromatic monomer and a copolymerizable polar comonomer are disclosed.
Inventors
- 👤 Bibiana S. Y. Chen
- 👤 David E. Henton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:59
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
164 words
A thermoplastic polymer blend comprising a polar matrix copolymer which is a copolymer of styrene and acrylic acid, methacrylic acid or maleic anhydride and a graft copolymer elastomer comprising a rubbery substrate polymer (I) having grafted thereto a copolymer (II) comprising the reaction product of a first monomer selected from the group consisting of monovinylidene aromatic monomers, ethylenically unsaturated nitrile functional monomrs, ethylenicaly unsaturated carboxylic acid esters having 1 to 4 carbons in the ester group, and mixtures thereof and from 0.1 to 10 percent by weight of a copolymerizable comonomer containing pendant cyclic ether or cyclic iminoether functionality corresponding to the formulae: ##STR3## wherein R' is an ethylenically unsaturated addition polymerizable aliphatic radical of up to 8 carbons; R" is a trivalent aliphatic moiety of up to 12 carbons; R"' is a divalent aliphatic moiety of up to 12 carbons; and R is hydrogen, halogen or a C 1-4 alkyl group, said percentages being based on total first monomers and copolymerizable comonomer weight.
Claim 2
Dependent Claim
164 words
A thermoplastic polymer blend comprising a polar matrix copolymer which is a copolymer of styrene and acrylic acid, methacrylic acid or maleic anhydride and a graft copolymer elastomer comprising a rubbery substrate polymer (I) having grafted thereto a copolymer (II) comprising the reaction product of a first monomer selected from the group consisting of monovinylidene aromatic monomers, ethylenically unsaturated nitrile functional monomrs, ethylenicaly unsaturated carboxylic acid esters having 1 to 4 carbons in the ester group, and mixtures thereof and from 0.1 to 10 percent by weight of a copolymerizable comonomer containing pendant cyclic ether or cyclic iminoether functionality corresponding to the formulae: ##STR3## wherein R' is an ethylenically unsaturated addition polymerizable aliphatic radical of up to 8 carbons; R" is a trivalent aliphatic moiety of up to 12 carbons; R"' is a divalent aliphatic moiety of up to 12 carbons; and R is hydrogen, halogen or a C 1-4 alkyl group, said percentages being based on total first monomers and copolymerizable comonomer weight.
Claim 3
Dependent Claim
22 words
A blend according to claim 1, wherein the rubbery substrate polymer (I) has a T g of less than about 0° C.
Claim 4
Dependent Claim
55 words
A blend according to claim 1, wherein the rubbery substrate polymer (I) is selected from the group consisting of homopolymers and copolymers of diolefins, copolymers of ethylene and at least one α-olefin containing at least three carbons, interpolymers of ethylene, at least one α-olefin containing at least three carbons, and a diene, and acrylate rubbers.
Claim 5
Dependent Claim
25 words
A blend according to claim 1, wherein the rubbery substrate polymer (I) is a polymer of butadiene prepared by emulsion, suspension, solution, or mass polymerization.
Claim 6
Dependent Claim
21 words
A blend according to claim 4, wherein the rubbery substrate polymer (I) contains at least about 60 percent by weight butadiene.
Claim 7
Dependent Claim
24 words
A blend according to claim 1, wherein the rubbery substrate has a volume average particle size distribution from about 0.03 to about 3.0 micrometers.
Claim 8
Dependent Claim
24 words
A blend according to claim 1, wherein the rubbery substrate has a volume average particle size distribution from about 0.1 to about 2.0 micrometers.
Claim 9
Dependent Claim
24 words
A blend according to claim 1, wherein the ethylenically unsaturated comonomer containing pendant cyclic ether or iminoether functionality is a 2-alkenyl-2-oxazoline or glycidyl methacrylate.
Claim 10
Dependent Claim
16 words
A thermoplastic polymer blend according to claim 1, additionally comprising a promoter of the functionalizing reaction.
Claim 11
Dependent Claim
15 words
A thermoplastic polymer blend according to claim 9, wherein the promoter is a Lewis acid.
Claim 12
Dependent Claim
28 words
A thermoplastic polymer blend according to claim 10, wherein the Lewis acid comprises from about 0.01 to 5 percent by weight based on total weight of the blend.
Claim 13
Dependent Claim
16 words
A thermoplastic polymer blend according to claim 10, wherein the Lewis acid is ZnCl 2 .
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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) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |