EP0322095A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Impact resistant polyethylene terephthalate/polycarbonate/PE blends
Assignee: Uniroyal Chemical Co Inc
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Filing: 1988-10-31
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Granted: —
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Expires: 2008-10-31
Abstract
Abstract High impact strength blends based on polyethylene terephthalate resin, polyethylene resin, aromatic polycarbonate resin and styrene-acrylonitrile grafted copolymers of EPDM. This invention is of special value in improving the engineering properties of PET/PE bottle recycle products.
Inventors
- 👤 John Michael Wefer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 21:21
CPC Classifications
C; C08; C08J; C08J11/00; C08J11/04; C08J11/06; C08L; C08L67/00; C08L67/02; C08J2367/00; C08J2367/02; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
80 words
a. A blend comprising a) polyethylene terephthalate resin; b) polyethylene resin; c) polycarbonate resin; and d) graft copolymer of styrene-acrylonitrile resin on an ethylene-propylene-non-conjugated diene rubber spine, said styrene-acrylonitrile resin being present in an amount of about 5-75% by weight of the graft copolymer; and wherein the proportions of (a), (b), (c) and (d) expressed in parts by weight per 100 parts of (a), (b), (c) and (d) are as follows: (a) 20-90; (b) 1-40; (c) 5-60; and (d) 5-50.
Claim 2
Dependent Claim
78 words
A blend comprising a) polyethylene terephthalate resin; b) polyethylene resin; c) polycarbonate resin; and d) graft copolymer of styrene-acrylonitrile resin on an ethylene-propylene-ethylidene norbornene rubber spine, said styrene-acrylonitrile resin being present in an amount of about 5-75% by weight of the graft copolymer; and wherein the proportions of (a), (b), (c) and (d) expressed in parts by weight per 100 parts of (a), (b), (c) and (d) are as follows: (a) 20-90; (b) 1-40; (c) 5-60; (d) 5-50.
Claim 3
Dependent Claim
94 words
A blend comprising a) polyethylene terephthalate resin; b) polyethylene resin; c) polycarbonate resin; and d) graft copolymer of styrene-acrylonitrile resin on an ethylene-propylene-ethylidene norbornene rubber spine, said styrene-acrylonitrile resin being present in an amount of about 5-75% by weight of the graft copolymer, said graft copolymer being an inverted composition in which the rubber is a discontinuous phase; and wherein the proportions of (a), (b), (c) and (d) expressed in parts by weight per 100 parts of (a), (b), (c) and (d) are as follows: (a) 20-80; (b) 1-30; (c) 15-50; and (d) 15-40.
Claim 4
Dependent Claim
125 words
A blend comprising a) polyethylene terephthalate resin; b) polyethylene resin; c) polycarbonate resin; and d) graft copolymer of styrene-acrylonitrile resin on an ethylene-propylene-ethylidene norbornene rubber spine, said styrene-acrylonitrile resin being present in an amount of about 30-70% by weight of the graft copolymer, the graft copolymer having been worked under shearing and fluxing conditions to disperse the rubber portion of the graft within the resinous portion thereof thus forming an inverted composition in which the rubber portion is a discontinuous phase prior to blending with (a), (b) and (c); and wherein the proportions of (a), (b), (c) and (d) expressed in parts by weight per 100 parts of (a), (b), (c) and (d) are as follows: (a) 20-90; (b) 1-40; (c) 5-60; and (d) 5-50.
Claim 5
Dependent Claim
26 words
The blend of claim 1 wherein the proportions of (a), (b), (c) and (d) are as follows: (a) 20-80; (b) 1-30; (c) 15-50; and (d) 15-40.
Claim 6
Dependent Claim
26 words
The blend of claim 1 wherein the proportions of (a), (b), (c) and (d) are as follows: (a) 40-60; (b) 1-20; (c) 20-40; and (d) 20-30.
Claim 7
Independent Claim
134 words
A method of making a blend of a) polyethylene terephthalate resin; b) polyethylene resin; c) polycarbonate resin; and d) graft copolymer of styrene-acrylonitrile resin on an ethylene-propylene-ethylidene norbornene rubber spine, said styrene-acrylonitrile resin being present in an amount of about 30-70% by weight of the graft copolymer, and wherein the proportions of (a), (b), (c) and (d) expressed in parts by weight per 100 parts of (a), (b), (c) and (d) are as follows: (a) 20-90; (b) 1-40; (c) 5-60; and (d) 5-50 comprising: working the graft copolymer (d) under shearing and fluxing conditions to disperse the rubber portion of the graft within the resinous portion thereof, thus forming an inverted composition in which the rubber portion is a discontinous phase, and thereafter blending the resulting inverted graft with components (a), (b) and (c).
Claim 8
Dependent Claim
46 words
A method of making a blend according to claim 7 wherein said styrene-acrylonitrile resin is present from about 30-70% by weight of the graft copolymer and the proportions of (a), (b), (c) and (d) are as follows: (a) 20-80; (b) 1-30; (c) 15-50; and (d) 15-40.
Claim 9
Dependent Claim
79 words
A blend comprising a) polyethylene terephthalate regrind; b) polyethylene regrind; c) polycarbonate resin; and d) graft copolymer of styrene-acrylonitrile resin on an ethylene-propylene-non-conjugated diene rubber spine, said styrene-acrylonitrile resin being present in an amount of about 5-75% by weight of the graft copolymer, and wherein the proportions of (a), (b), (c) and (d) expressed in parts by weight per 100 parts of (a), (b), (c) and (d) are as follows: (a) 20-90; (b) 1-40; (c) 5-60; and (d) 5-50.
Claim 10
Dependent Claim
72 words
A blend comprising a) polyethylene terephthalate/polyethylene regrind; b) polycarbonate resin; and c) graft copolymer of styrene-acrylonitrile resin on an ethylene-propylene-non-conjugated diene rubber spine, said styrene-acrylonitrile resin being present in an amount of about 5-75% by weight of the graft copolymer, and wherein the proportions of (a), (b), and (c) expressed in parts by weight per 100 parts of (a), (b) and (c) are as follows: (a) 20-90; (b) 5-60; and (c) 5-50.
References Cited (Backward Citations)
No citation records indexed.
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