EP0106096A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polycarbonate resin mixtures
Assignee: General Electric Co
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Filing: 1983-09-02
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Granted: —
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Expires: 2003-09-02
Abstract
Abstract Novel compositions with improved resistance to environmental stress cracking and crazing comprising (a) an aromatic carbonate polymer; and (b) a modifier combination therefor comprising (i) a thermoplastic olefin polymer insoluble therein; and (ii) a linear low density polyolefin.
Inventors
- 👤 Ping Yuan Liu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 08:58
CPC Classifications
C; C08; C08L; C08L69/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
77 words
A resin mixture comprising (a) an aromatic polycarbonate resin, and (b) a modifier combination therefor comprising (i) a thermoplastic olefin polymer insoluble in said polycarbonate resin; and (ii) a linear low density polyolefin resin, said modifier being present in an amount sufficient to impart to said mixture a resistance to environmental stress crazing and cracking greater than that possessed by said polycarbonate resin (a) alone, and enhanced weld line strength compared to polycarbonate resin plus (b) (i).
Claim 2
Dependent Claim
77 words
A resin mixture comprising (a) an aromatic polycarbonate resin, and (b) a modifier combination therefor comprising (i) a thermoplastic olefin polymer insoluble in said polycarbonate resin; and (ii) a linear low density polyolefin resin, said modifier being present in an amount sufficient to impart to said mixture a resistance to environmental stress crazing and cracking greater than that possessed by said polycarbonate resin (a) alone, and enhanced weld line strength compared to polycarbonate resin plus (b) (i).
Claim 3
Dependent Claim
38 words
A resin mixture as defined in Claim 1 wherein the amount of modifier combination (b) ranges from about 4 to about 50 parts by weight per 100 parts by weight of resin (a) and modifier combination (b) together.
Claim 4
Dependent Claim
31 words
A resin mixture as defined in Claim 1 wherein the aromatic carbonate polymer comprises recurring structural units of the formula: wherein A is a divalent aromatic radical of a dihydric phenol.
Claim 5
Dependent Claim
20 words
A resin mixture as defined in Claim 3 wherein in said formula, A is derived from a 4,4'-dihydroxy-di (mononuclear aryl)alkane.
Claim 6
Dependent Claim
16 words
A resin mixture as defined in Claim 1 wherein said aromatic polycarbonate (a) comprises poly(2,2-diphenylpropane) carbonate.
Claim 7
Dependent Claim
43 words
A resin mixture as defined in Claim 1 wherein said thermoplastic olefin polymer (b) (i) comprises at least one member selected from the class consisting of polyethylene, polypropylene, polyisobutylene, a copolymer of ethylene and ethyl acrylate and a copolymer of ethylene and propylene.
Claim 8
Dependent Claim
19 words
A resin mixture as defined in Claim 6 wherein said thermoplastic olefin polymer (b) (i) comprises polymerized propylene units.
Claim 9
Dependent Claim
24 words
A resin mixture as defined in Claim 1 wherein said linear low density polyolefin resin (b) (ii) is a linear low density polyethylene resin.
Claim 10
Dependent Claim
22 words
A resin mixture as defined in Claim 8 wherein said linear low density polyolefin resin is a copolymer of ethylene and butene-1.
Claim 11
Dependent Claim
61 words
A resin mixture as defined in Claim 1 wherein component (a) comprises from about 84 to about 96 parts by weight; component (b)(i) comprises from about 2 to about 8 parts by weight; and component (b) (ii) comprises from about 2 to about 8 parts by weight, per 100 parts by weight of components (a), (b) (i) and (b) (ii) combined.
References Cited (Backward Citations)
FR1182425A
Cited
US3431224A
Cited
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