EP0337662A2
Expired / Lapsed
EP
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Polymers
Assignee: Don and Low Ltd
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Filing: 1989-04-06
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Granted: —
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Expires: 2009-04-06
Abstract
Abstract A polymer blend comprising a principal amount of polypropylene includes a minor amount of polybutylene to enhance the tenacity of the oriented polymer. Usually draw ratios of 8:1 to 14:1 are used.
Inventors
- 👤 Andrew Nicholas Ferrar
- 👤 George Simpson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 22:47
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; C08L; C08L23/00; C08L23/02; C08L23/10; D; D01; D01F; D01F6/00; D01F6/44; D01F6/46; C08J2323/00; C08J2323/02; C08J2323/10; C08J2323/12; C08L2203/00; C08L2203/12; C08L23/04; C08L23/18; C08L23/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
29 words
A polymer blend which consists essentially of a principal polymer component comprising polypropylene and a minor polybutylene component in a proportion sufficient to increase the strength of the polymer.
Claim 2
Dependent Claim
29 words
A polymer blend which consists essentially of a principal polymer component comprising polypropylene and a minor polybutylene component in a proportion sufficient to increase the strength of the polymer.
Claim 3
Dependent Claim
15 words
A blend according to claim 1 which comprises 0.1 to 10% by weight of polybutylene.
Claim 4
Dependent Claim
15 words
A blend according to claim 2 which comprises 2 to 4% by weight of polybutylene.
Claim 5
Dependent Claim
22 words
A blend according to any preceding claim which has been oriented by drawing in a draw ratio of from 8:1 to 14:1.
Claim 6
Dependent Claim
16 words
A blend according to claim 4 in the form of a biaxially oriented film or tape.
Claim 7
Dependent Claim
16 words
A blend according to claim 4 in the form of a monoaxially oriented fibre or filament.
Claim 8
Dependent Claim
17 words
A blend according to any preceding claim which further comprises 0.1 to 30% by weight of polyethylene.
References Cited (Backward Citations)
No citation records indexed.
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