EP0330480A2
Expired / Lapsed
EP
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Polyethylene alkyl acrylate
Assignee: Commscope Connectivity Belgium BVBA
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Filing: 1989-02-23
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Granted: —
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Expires: 2009-02-23
Abstract
Abstract A hot-melt adhesive composition which comprises a mixture of: (a) 25-40 parts by weight of a polyethylene alkyl acrylate terpolymer containing maleic anhydride and having a melt flow index as determined according to ASTM D1238-70 of at least 40; and (b) 25-70 parts by weight of a polyethylene alkyl acrylate copolymer having a melt flow index as determined according to ASTM D1238-70 of at least 40. a
Inventors
- 👤 Noel Overbergh
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 14:56
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/06; B29C61/0608; B29C61/0658; B29C61/0616; C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
66 words
A hot-melt adhesive composition which comprises a mixture of: (a) 25-40 parts by weight of a polyethylene alkyl acrylate terpolymer containing maleic anhydride and having a melt flow index as determined according to ASTM D1238-70 of at least 40; and (b) 25-70 parts by weight of a polyethylene alkyl acrylate copolymer having a melt flow index as determined according to ASTM D1238-70 of at least 40.
Claim 2
Dependent Claim
66 words
A hot-melt adhesive composition which comprises a mixture of: (a) 25-40 parts by weight of a polyethylene alkyl acrylate terpolymer containing maleic anhydride and having a melt flow index as determined according to ASTM D1238-70 of at least 40; and (b) 25-70 parts by weight of a polyethylene alkyl acrylate copolymer having a melt flow index as determined according to ASTM D1238-70 of at least 40.
Claim 3
Dependent Claim
24 words
An adhesive composition according to claim 1, in which the terpolymer (a) comprises a polyethylene ethyl acrylate terpolymer and/or a polyethylene butyl acrylate terpolymer.
Claim 4
Dependent Claim
26 words
An adhesive composition according to claims 1 or 2, in which the copolymer (b) comprises a polyethylene ethyl acrylate copolymer and/or a polyethylene butyl acrylate copolymer.
Claim 5
Dependent Claim
27 words
An adhesive composition according to claim 1, in which the terpolymer (a) comprises a polyethylene ethyl acrylate terpolymer and copolymer (b) comprises a polyethylene butyl acrylate copolymer.
Claim 6
Dependent Claim
24 words
An adhesive composition according to claim 1, which additionally comprises: (c) from 5 to 15 parts by weight of a flow-temperature- or viscosity-modifying agent.
Claim 7
Dependent Claim
30 words
An adhesive composition according to claim 4 having: (a) 28-38 parts by weight of said polyethylene ethyl acrylate copolymer; and (b) 55-70 parts by weight of said polyethylene butyl acrylate.
Claim 8
Dependent Claim
25 words
An adhesive composition according to any preceding claim in which the melt flow index of terpolymer (a) and/or of copolymer (b) is at least 70.
Claim 9
Dependent Claim
21 words
An adhesive composition according to any preceding claim, which additionally comprises: (d) up to 15 parts by weight of a polyamide.
Claim 10
Dependent Claim
26 words
An adhesive composition according to any preceding claim, in which the terpolymer (a) has a ring-and-ball softening point as determined according to ASTM E28 of 80-125°C.
Claim 11
Dependent Claim
26 words
An adhesive composition according to any preceding claim, in which the copolymer (b) has a ring-and-ball softening point as determined according to ASTM E28 of 80-125°C.
Claim 12
Dependent Claim
25 words
An adhesive composition according to claim 5, in which the modifying agent has a ring-and-ball softening point as determined according to ASTM E-28 of 80-120°C.
Claim 13
Dependent Claim
15 words
An adhesive composition according to claim 5, in which the modifying agent comprises a tackifier.
Claim 14
Dependent Claim
16 words
An adhesive composition according to claim 12, in which the tackifier comprises a terpene phenolic resin.
Claim 15
Dependent Claim
22 words
An adhesive composition according to any preceding claim having a ring-and-ball softening point as determined according to ASTM E-28 of from 90-110°C.
Claim 16
Dependent Claim
23 words
An adhesive composition according to any preceding claim, having a viscosity as determined according to ASTM D3236 at 160°C of from 40-110 Pa.s.
Claim 17
Dependent Claim
22 words
An adhesive composition according to any preceding claim, having a viscocity as determined according to ASTM D3236 at 200°C of 15-40 Pa.s.
Claim 18
Dependent Claim
22 words
An adhesive composition according to any preceding claim, having an impact brittleness as determined according to ISO 974 of less than -30°C.
Claim 19
Dependent Claim
31 words
An adhesive composition according to any preceding claim, exhibiting a peel strength to non-flame-brushed polyethylene and/or flame-brushed as determined according to QAPK K027 of greater than 150 N/25 mm at 21°C.
Claim 20
Dependent Claim
17 words
An adhesive composition according to any preceding claim that contains substantially no vinyl acetate nor copolymer thereof.
Claim 21
Dependent Claim
24 words
An adhesive composition according to any preceding claim that consists essentially of said terpolymer (a), said copolymer (b), said tackifier and optionally said polyamide.
Claim 22
Dependent Claim
11 words
An adhesive composition according to claim 20, containing substantially no polyamide.
Claim 23
Dependent Claim
13 words
A heat-recoverable article having thereon an adhesive composition according to any preceding claim.
Claim 24
Dependent Claim
22 words
An article according to claim 22, which comprises a composite material that is shrinkable by virtue of a shrinkable fibre component thereof.
Claim 25
Dependent Claim
25 words
An article according to claim 23, in which the composite material comprises shrinkable fibres and a polyethylene matrix to which the adhesive composition is bonded.
Claim 26
Dependent Claim
18 words
An article according to any of claims 22-24, in which the article comprises a tubular or wrap-around sleeve.
Claim 27
Independent Claim
51 words
A method of environmentally sealing a cable or a pipe which comprises: (a) providing an adhesive composition according to any of claims 1-21; (b) heating the composition; (c) allowing or causing the composition to flow around a surface of the cable or pipe; (d) allowing or causing the composition to cool.
Claim 28
Dependent Claim
18 words
A method according to claim 26, in which the composition is provided as part of a heat-recoverable article.
References Cited (Backward Citations)
No citation records indexed.
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