Patent US2420660A successfully refreshed from Google Patents.
Patent CA1106520A successfully refreshed from Google Patents.
CA1106520A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Blends of polyethylene and polybutene
Assignee: PPG Architectural Coatings Canada Inc
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Filing: 1978-11-24
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Granted: 1981-08-04
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Expires: 1998-11-24
Abstract
Abstract ABSTRACT OF THE DISCLOSURE Blends of low density polyethylene or ethylene vinyl acetate copolymers with a butene polymer having a molecular weight of 700 to 2000, preferably 700 to 1000. Films made from such blends have excellent cling and tack properties which make them suitable for use in self-sealing stretch wrapping and in self-sealing packaging.
Inventors
- 👤 Marinus A. Doomernik
- 👤 Douglas C. Eagles
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-06 13:35
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0846; C08L23/0853; C08L23/18; C08L23/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
81 words
A polymer blend comprising a) from 90.0 to 98.0 per cent by weight of a polymer selected from polyethylene and copolymers of ethylene with from 1.0 to 9.0 per cent by weight of vinyl acetate, having a melt index in the range of 0.3 to 7.0 grams per 10 minutes and a density in the range of 917 to 933 kg/m3, and b) from 10.0 to 2.0 per cent by weight of polybutene having a molecular weight of 700 to 1000.
Claim 2
Dependent Claim
81 words
A polymer blend comprising a) from 90.0 to 98.0 per cent by weight of a polymer selected from polyethylene and copolymers of ethylene with from 1.0 to 9.0 per cent by weight of vinyl acetate, having a melt index in the range of 0.3 to 7.0 grams per 10 minutes and a density in the range of 917 to 933 kg/m3, and b) from 10.0 to 2.0 per cent by weight of polybutene having a molecular weight of 700 to 1000.
Claim 3
Dependent Claim
16 words
A blend as claimed in Claim 1 wherein the polybutene has a molecular weight of 900.
Claim 4
Dependent Claim
19 words
A film made from a blend as claimed in Claim 1 or 2. CLAIMS SUPPORTED BY THE SUPPLEMENTARY DISCLOSURE
Claim 5
Dependent Claim
81 words
A polymer blend comprising a) from 90.0 to 98.0 per cent by weight of a polymer selected from polyethylene and copolymers of ethylene with from 1.0 to 9.0 per cent by weight of vinyl acetate, having a melt index in the range of 0.3 to 7.0 grams per 10 minutes and a density in the range of 917 to 933 kg/m3, and b) from 10.0 to 2.0 per cent by weight of polybutene having a molecular weight of 700 to 2000.
Claim 6
Dependent Claim
81 words
A polymer blend comprising a) from 90.0 to 98.0 per cent by weight of a polymer selected from polyethylene and copolymers of ethylene with from 1.0 to 9.0 per cent by weight of vinyl acetate, having a melt index in the range of 0.3 to 7.0 grams per 10 minutes and a density in the range of 917 to 933 kg/m3, and b) from 10.0 to 2.0 per cent by weight of polybutene having a molecular weight of 700 to 2000.
Claim 7
Dependent Claim
62 words
A polymer blend comprising a) from 90.0 to 98.0 per cent by weight of poly-ethylene having a melt flow index in the range of 0.3 to 7.0 grams per 10 minutes and a density in the range of 917 to 933 kg/m3, and b) from 10,0 to 2,0 per cent by weight of polybutene having a molecular weight of 1000 to 2000.
Claim 8
Dependent Claim
62 words
A polymer blend comprising a) from 90.0 to 98.0 per cent by weight of poly-ethylene having a melt flow index in the range of 0.3 to 7.0 grams per 10 minutes and a density in the range of 917 to 933 kg/m3, and b) from 10,0 to 2,0 per cent by weight of polybutene having a molecular weight of 1000 to 2000.
Claim 9
Dependent Claim
16 words
A blend as claimed in Claim 5 wherein the polybutene has a molecular weight of 1300.
Claim 10
Dependent Claim
14 words
A film made of a blend as claimed in Claim 4, 5 or 6.
References Cited (Backward Citations)
No citation records indexed.
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