US4374231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive composition
Assignee: NV RACHEM SA A Co OF BELGIUM
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Filing: 1981-05-12
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Granted: 1983-02-15
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Expires: 2001-05-12
Abstract
Abstract A hot-melt adhesive composition comprising a polyamide and up to 10% by weight of the polyamide of an ethylene acrylic terpolymer and preferably also an acrylic rubber. The acrylic rubber is preferably a copolymer of ethyl acrylate, butyl acrylate, methoxy ethyl acrylate and ethoxy ethyl acrylate.
Inventors
- 👤 Jos Doucet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:52
CPC Classifications
C; C08; C08L; C08L77/00; C08L33/00; C09; C09J; C09J177/00; C09J177/06; C09J177/08
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
25 words
A hot-melt adhesive composition comprising a polyamide based on one or more dimeric fatty acids and an ethylene/acrylic acid/butyl acrylate terpolymer containing free acid groups.
Claim 2
Dependent Claim
25 words
A hot-melt adhesive composition comprising a polyamide based on one or more dimeric fatty acids and an ethylene/acrylic acid/butyl acrylate terpolymer containing free acid groups.
Claim 3
Dependent Claim
24 words
A composition according to claim 1, including up to 20 percent of the ethylene/acrylic acid/butyl acrylate terpolymer based on the weight of the polyamide.
Claim 4
Dependent Claim
21 words
A composition according to claim 1 which includes up to 10 percent by weight of the polyamide of an acrylic rubber.
Claim 5
Dependent Claim
17 words
A composition according to claim 3, comprising up to 5 percent by weight of the acrylic rubber.
Claim 6
Dependent Claim
17 words
A composition according to claim 4, comprising up to 1 percent by weight of the acrylic rubber.
Claim 7
Dependent Claim
17 words
A composition according to claim 5, comprising 0.25 to 0.75 percent by weight of the acrylic rubber.
Claim 8
Dependent Claim
25 words
A composition according to claim 3, wherein the acrylic rubber is a copolymer of ethyl acrylate, butyl acrylate, methoxy ethyl acrylate, and ethoxy ethyl acrylate.
Claim 9
Dependent Claim
18 words
A composition according to claim 7, wherein the acrylic rubber has a Mooney viscosity of 25 to 40.
Claim 10
Dependent Claim
16 words
A composition according to claim 1, wherein the polyamide has a molecular weight greater than 6,000.
Claim 11
Dependent Claim
39 words
A hot-melt adhesive composition comprising a polyamide based on one or more dimeric fatty acids, an ethylene/acrylic acid/butyl acrylate terpolymer, and an acrylic rubber in proportions lying within the shaded area of the diagram shown in the accompanying drawing.
Claim 12
Dependent Claim
39 words
A hot-melt adhesive composition comprising a polyamide based on one or more dimeric fatty acids, an ethylene/acrylic acid/butyl acrylate terpolymer, and an acrylic rubber in proportions lying within the shaded area of the diagram shown in the accompanying drawing.
Claim 13
Dependent Claim
16 words
A composition according to claim 1, including a liquid polyamide in addition to the main polyamide.
Claim 14
Dependent Claim
24 words
A composition according to claim 11, comprising 5 to 20% by weight of a liquid polyamide based on the weight of the main polyamide
Claim 15
Dependent Claim
14 words
A heat-recoverable article carrying a coating of an adhesive composition according to claim 1.
Claim 16
Dependent Claim
24 words
A composition according to claim 2, including 10 to 20 percent of the ethylene/acrylic acid/butyl acrylate terpolymer, based on the weight of the polyamide.
Claim 17
Dependent Claim
39 words
A hot-melt adhesive composition comprising a polyamide based on one or more dimeric fatty acids and from 6.7 percent to 33 percent, based on the weight of the polyamide, of an ethylene/acrylic acid/butyl acrylate terpolymer containing free acid groups.
Claim 18
Dependent Claim
39 words
A hot-melt adhesive composition comprising a polyamide based on one or more dimeric fatty acids and from 6.7 percent to 33 percent, based on the weight of the polyamide, of an ethylene/acrylic acid/butyl acrylate terpolymer containing free acid groups.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-14 | 1986-08-16 | 1987-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-14 | 1990-08-16 | 1991-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-14 | 1994-08-16 | 1995-02-15 | $7700.00 | Window Closed / Lapsed |