EP0092318A1
Expired / Lapsed
EP
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Blends of polyolefin plastics with elastomeric plasticizers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1983-03-23
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Granted: —
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Expires: 2003-03-23
Abstract
Abstract Compositions of matter useful in the preparation of film which is soft and has high tensile, tear and impact strength comprise polyolefin plastics such as polypropylene blended with an elastomeric plasticizer; the latter comprises polyethylene or a copolymer of ethylene and an unsaturated ester of a lower carboxylic acid, olefinic elastomer and a hydrocarbon oil.
Inventors
- 👤 Karel Charles Janac
- 👤 Robert Chester Puydak
- 👤 Donald Ross Hazelton
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 17:48
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22; C08L23/04; C08L23/06; C08L23/08; C08L23/0807; C08L23/0815; C08L23/10; C08L23/16; C08L23/26; C08L23/28; C08L23/283; C08L23/0846; C08L23/0853; C08L23/0869; C08L91/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
59 words
A film-forming, thermoplastic elastomeric blend composition comprising: (a) a polyolefin plastics component selected from polypropylene, polypropylene reactor copolymer, polybutylene, linear low density polyethylene, high density polyethylene, and mixtures thereof; and an elastomeric plasticizer comprising: (b) polyethylene or a copolymer of ethylene and an unsaturated ester of a lower carboxylic acid, (c) an olefinic elastomer, and (d) a hydrocarbon oil.
Claim 2
Dependent Claim
59 words
A film-forming, thermoplastic elastomeric blend composition comprising: (a) a polyolefin plastics component selected from polypropylene, polypropylene reactor copolymer, polybutylene, linear low density polyethylene, high density polyethylene, and mixtures thereof; and an elastomeric plasticizer comprising: (b) polyethylene or a copolymer of ethylene and an unsaturated ester of a lower carboxylic acid, (c) an olefinic elastomer, and (d) a hydrocarbon oil.
Claim 3
Dependent Claim
35 words
A composition according to claim 1 characterised in that said olefinic elastomer is selected from ethylene copolymer elastomers, ethylene terpolymer elastomers, polyisobutylene, and isoprene copolymer elastomers including isobutylene-isoprene copolymer elastomers and halogenated isobutylene-isoprene copolymer elastomers.
Claim 4
Dependent Claim
29 words
A composition according to claim 2 characterised in that said olefinic elastomer comprises a copolymer of ethylene and propylene, or a terpolymer of ethylene, propylene and a non-conjugated diene.
Claim 5
Dependent Claim
32 words
A composition according to claim 1, 2 or 3 characterized in that component (b) is selected from high density polyethylene, low density polyethylene, linear low density polyethylene, vinyl esters and alkyl acrylates.
Claim 6
Dependent Claim
29 words
A composition according to claim 4 characterized in that component (b) is a vinyl ester comprising vinyl acetate or an alkyl acrylate selected from methyl acrylate and ethyl acrylate.
Claim 7
Dependent Claim
24 words
A composition according to any one of the preceding claims characterized in that said hydrocarbon oil is selected from paraffinic, naphthenic and aromatic oils.
Claim 8
Dependent Claim
27 words
A composition according to any one of the preceding claims which comprises from 15 to 95 weight percent of said component (a), based on the total composition.
Claim 9
Dependent Claim
27 words
A composition according to any one of the preceding claims which comprises from 2 to 60 weight percent of said component (b), based on the total composition.
Claim 10
Dependent Claim
25 words
A composition according to any one of the preceding claims which comprises from 1 to 50 weight percent olefinic elastomer, based on the total composition.
Claim 11
Dependent Claim
25 words
A composition according to any one of the preceding claims which comprises from 1 to 30 weight percent hydrocarbon oil, based on the total composition.
Claim 12
Independent Claim
50 words
A method of producing a film-forming thermoplastic elastomeric blend composition according to any one of the preceding claims which comprises providing the polyolefin plastics component (a) and a preformed elastomeric plasticizer comprising components (b), (c) and (d), and admixing the plasticizer with the plastics component to form the desired composition.
Claim 13
Dependent Claim
49 words
A method according to claim 11 wherein the preformed elastomeric plasticizer comprises from 20 to 70 weight percent of component (b) and/or from 20 to 80 weight percent of olefinic elastomer component (c) and/or from 1 to 35 weight percent of hydrocarbon oil component (d), based on the plasticizer.
Claim 14
Dependent Claim
28 words
A method according to claim 11 or 12 wherein the preformed elastomeric plasticizer additionally includes up to 30 weight percent of an olefinic plastic, based on the plasticizer.
Claim 15
Dependent Claim
21 words
A method according to claim 13 wherein the olefinic plastic is selected from polypropylene, high density polyethylene and polypropylene reactor copolymer.
Claim 16
Independent Claim
27 words
a method according to any one of claims 11 to 14 characterized in that said elastomeric plasticizer and said component (a) are each provided in pellet form.
Claim 17
Dependent Claim
32 words
A composition according to any one of claims 1 to 10 or produced according to the method of any one of claims 11 to 15 when in the form of a film.
Claim 18
Dependent Claim
40 words
A film when manufactured by producing a composition by the method of any one of claims 11 to 15 and performing a film forming step selected from cast extrusion, blown film tubular water bath extrusion, cast coextrusion, and extrusion coating.
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