EP0101427A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polyblends of thermoplastic copolyetheresters styrene-maleic anhydride polymers and acrylonitrile-butadiene-styrene polymers
Assignee: Monsanto Co
•
Filing: 1983-08-08
•
Granted: —
•
Expires: 2003-08-08
Abstract
Abstract Molding compositions are prepared from blends of (A) a thermoplastic copolyetherester elastomer; (B) a styrene maleic anhydride polymer; and (C) an ABS or MBS polymer. Component B, the styrene maleic anhydride polymer may optionally contain a termonomer such as methylmethacrylate or acrylonitrile and a rubber component.
Inventors
- 👤 Daniel Louis Dufour
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:47
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08L67/025; C08L35/00; C08L35/06; C08L55/00; C08L55/02; C08L51/00; C08L51/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
251 words
A polyblend comprising: A. from 3 to 90% by weight of a thermoplastic copolyetherester elastomer; B. from 5 to 70% by weight of a polymer of a vinylaromatic monomer and an unsaturated dicarboxylic acid anhydride monomer and optionally a termonomer, selected from C 1 to C 3 alkyl acrylates, C 1 to C 3 alkyl methacrylates and unsaturated nitriles, wherein the relative amounts by weight of the monomers in the polymer are 50 to 85% of the vinylaromatic monomer, 15 to 35% of the dicarboxylic acid anhydride and 0 to 20% of the termonomer; and wherein the monomers are polymerized in the presence of 0 to 25% by weight of a rubber having a glass transition temperature below 0°C.; and C. from 5 to 70% by weight of a grafted polymer composition comprising a graft polymer of from 20 to 40 parts by weight of a monomer selected from the group consisting of methyl methacrylate and acrylonitrile and 80 to 60 parts by weight of a vinyl aromatic monomer, the polymer being grafted on to a substrate rubber having a glass transition temperature below 0°C. wherein the monomers are polymerized in the presence of and grafted on to the substrate rubber, wherein the weight percent of the rubber is in the range from 5 to 60% by weight based on the weight of the composition; and wherein the weight percent for Components (A), (B) and (C) is based on the total amount of Components (A), (B) and (C) in the polyblend.
Claim 2
Dependent Claim
251 words
A polyblend comprising: A. from 3 to 90% by weight of a thermoplastic copolyetherester elastomer; B. from 5 to 70% by weight of a polymer of a vinylaromatic monomer and an unsaturated dicarboxylic acid anhydride monomer and optionally a termonomer, selected from C 1 to C 3 alkyl acrylates, C 1 to C 3 alkyl methacrylates and unsaturated nitriles, wherein the relative amounts by weight of the monomers in the polymer are 50 to 85% of the vinylaromatic monomer, 15 to 35% of the dicarboxylic acid anhydride and 0 to 20% of the termonomer; and wherein the monomers are polymerized in the presence of 0 to 25% by weight of a rubber having a glass transition temperature below 0°C.; and C. from 5 to 70% by weight of a grafted polymer composition comprising a graft polymer of from 20 to 40 parts by weight of a monomer selected from the group consisting of methyl methacrylate and acrylonitrile and 80 to 60 parts by weight of a vinyl aromatic monomer, the polymer being grafted on to a substrate rubber having a glass transition temperature below 0°C. wherein the monomers are polymerized in the presence of and grafted on to the substrate rubber, wherein the weight percent of the rubber is in the range from 5 to 60% by weight based on the weight of the composition; and wherein the weight percent for Components (A), (B) and (C) is based on the total amount of Components (A), (B) and (C) in the polyblend.
Claim 3
Dependent Claim
47 words
A polyblend according to Claim 1, wherein the copolyetherester is in the range from 3 to 30% by weight and the weight ratio of the polymer of vinyl aromatic monomer and dicarboxylic acid monomer to the grafted polymer composition is in the range from 20:80 to 80:20.
Claim 4
Dependent Claim
19 words
A polyblend according to Claim 2, wherein the copolyetherester is in the range from 3 to 20% by weight.
Claim 5
Dependent Claim
34 words
A polyblend according to Claim 3, wherein the weight ratio of the polymer of vinyl aromatic monomer and dicarboxylic acid monomer to the grafted polymer composition is in the range from 30:70 to 70:30.
Claim 6
Dependent Claim
25 words
A polyblend according to any of the preceding claims wherein the polyetherester comprises a polytetramethylene ether terephthalate soft segment and a polybutylene terephthalate hard segment.
Claim 7
Dependent Claim
18 words
A polyblend according to any of the preceding claims, wherein Component B is a styrene maleic anhydride polymer.
Claim 8
Dependent Claim
18 words
A polyblend according to any of the preceding claims, wherein the grafted polymer of Component C is ABS.
Claim 9
Dependent Claim
108 words
A polyblend according to Claim 1, wherein Component A is from 3 to 30% by weight of a thermoplastic copolyetherester elastomer comprising a polytetramethylene ether terephthalate soft segment and a polybutylene terephthalate hard segment; Component B is a styrene maleic anhydride polymer comprising 50 to 85% by weight of styrene, 15 to 35% by weight of maleic anhydride and 0 to 20% of a methly methacrylate termonomer; the substrate rubber in Component C is a butadiene rubber having a glass transition temperature below 0°C. and wherein the weight ratio of the styrene maleic anhydride polymer to the grafted polymer composition is in the range of 20:80 to 80:20.
Claim 10
Dependent Claim
44 words
A polyblend according to Claim 8 wherein the copolyetherester is in the range from 3 to 20% by weight and the weight ratio of the polymer of styrene maleic anhydride polymer to the grafted polymer composition is in the range from 30:70 to 70:30.
Claim 11
Dependent Claim
37 words
A polyblend according to either Claim 8 or Claim 9, wherein the styrene maleic anhydride polymer contains 5 to 15% by weight of a methyl methacrylate termonomer and wherein the grafted polymer of Component C is ABS.
Claim 12
Dependent Claim
44 words
A polyblend according to any one of Claims 1 to 10 comprising: (A) a copolyether ester which comprises a polytetramethylene ether terephthalate soft segment and a polybutylene terephthalate hard segment; (B) a styrene maleic anhydride methyl methacrylate terpolymer; and (C) an ABS grafted polymer.
Claim 13
Dependent Claim
60 words
A polyblend according to any one of Claims 1 to 10 wherein the polymer of the vinyl aromatic monomer and the unsaturated dicarboxylic acid anhydride of Component B is prepared by polymerizing the monomers in the presence of rubber component having a glass transition temperature below 0°C. to provide from 10 to 25% by weight of rubber in the polymer.
Claim 14
Dependent Claim
77 words
A polyblend according to any one of Claims 1 to 10 wherein the grafted polymer composition of Component C is replaced in whole or in part by a rubber modified polymer of a vinyl aromatic monomer, an unsaturated dicarboxylic acid anhydride and optionally a termonomer selected from the group consisting of C 1 to C 3 acrylates and methacrylates and unsaturated nitriles, which rubber modified polymer contains from 5 to 35% by weight of the rubber component.
Claim 15
Dependent Claim
37 words
A polyblend as in any of Claims 1 to 10 wherein both Components B and C are rubber modified polymers of styrene and maleic anhydride which contain from 5 to 35% by weight of a rubber component.
Claim 16
Dependent Claim
16 words
A molded or extruded article prepared from a polyblend according to any of the preceding claims.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.