US4965320A
Expired / Lapsed
US
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Polyethylene alkyl acrylate adhesive composition
Assignee: Commscope Connectivity Belgium BVBA
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Filing: 1989-02-27
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Granted: 1990-10-23
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Expires: 2009-02-27
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.
Inventors
- 👤 Noel M. M. Overbergh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:02
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: 22
Claim 1
Independent Claim
74 words
A hot-melt adhesive composition which is not crosslinked, comprising a mixture of: (a) 25-40 parts by weight of a terpolymer of ethylene, alkyl acrylate and 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 copolymer consisting essentially of ethylene and alkyl acrylate having a melt flow index as determined according to ASTM D1238-70 of at least 40.
Claim 2
Dependent Claim
74 words
A hot-melt adhesive composition which is not crosslinked, comprising a mixture of: (a) 25-40 parts by weight of a terpolymer of ethylene, alkyl acrylate and 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 copolymer consisting essentially of ethylene and alkyl acrylate having a melt flow index as determined according to ASTM D1238-70 of at least 40.
Claim 3
Dependent Claim
22 words
An adhesive composition according to claim 1, in which the terpolymer (a) comprises an ethyl acrylate and/or a butyl acrylate containing terpolymer.
Claim 4
Dependent Claim
22 words
An adhesive composition according to claim 1, in which the copolymer (b) comprises an ethyl acrylate and/or a butyl acrylate containing copolymer.
Claim 5
Dependent Claim
27 words
An adhesive composition according to claim 1, in which the terpolymer (a) comprises an ethyl acrylate containing terpolymer and copolymer (b) comprises a butyl acrylate containing 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
25 words
An adhesive composition according to claim 4 having: (a) 28-28 parts by weight of said terpolymer; and (b) 55-70 parts by weight of said copolymer.
Claim 8
Dependent Claim
24 words
An adhesive composition according to claim 1, in which the melt flow index of terpolymer (a) and/or of copolymer (b) is at least 70.
Claim 9
Dependent Claim
20 words
An adhesive composition according to claim 1, which additionally comprises: (d) up to 15 parts by weight of a polyamide.
Claim 10
Dependent Claim
26 words
An adhesive composition according to claim 1, 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 claim 1, 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
26 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 claim 1 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 claim 1, 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 claim 1, having a viscosity 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 claim 1, 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 claim 1, 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
16 words
An adhesive composition according to claim 1, that contains substantially no vinyl acetate nor copolymer thereof.
Claim 21
Dependent Claim
23 words
An adhesive composition according to claim 1, that consists essentially of said terpolymer (a), said copolymer (b), a tackifier and optionally a polyamide.
Claim 22
Dependent Claim
11 words
An adhesive composition according to claim 20, containing substantially no polyamide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |