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Patent US4132690A successfully refreshed from Google Patents.
US4132690A
Expired / Lapsed
US
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Adhesive polyamide resin compositions containing high acid number copolymers
Assignee: Honeywell International Inc
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Filing: 1976-09-27
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Granted: 1979-01-02
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Expires: 1996-09-27
Abstract
Abstract Adhesive polyamide resin compositions, such as hot melts, containing conventional components are improved by inclusion of a normally solid, homogeneous copolymer of ethylene and an unsaturated carboxylic acid having an acid number of at least about 100 and a number average molecular weight between 500 and 5,000.
Inventors
- 👤 Tjeerd Eernstman
- 👤 Christopher J. Auger
- 👤 Emile M. Devroede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:02
CPC Classifications
C; C09; C09J; C09J177/00; C08; C08L; C08L77/00; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C08L2666/00; C08L2666/02; C08L2666/14; C08L2666/20
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
75 words
An adhesive composition comprising a compatible admixture of: (a) about 15 to 99 weight percent of a conventional polyamide adhesive base component; and correspondingly (b) about 85 to 1 weight percent of a normally solid, homogeneous copolymer of ethylene and an unsaturated carboxylic acid having an acid number of at least about 100 and a number average molecular weight between 500 and 5,000, said copolymer containing at least a major portion of ethylene by weight.
Claim 2
Dependent Claim
75 words
An adhesive composition comprising a compatible admixture of: (a) about 15 to 99 weight percent of a conventional polyamide adhesive base component; and correspondingly (b) about 85 to 1 weight percent of a normally solid, homogeneous copolymer of ethylene and an unsaturated carboxylic acid having an acid number of at least about 100 and a number average molecular weight between 500 and 5,000, said copolymer containing at least a major portion of ethylene by weight.
Claim 3
Dependent Claim
40 words
The composition of claim 1 wherein said polyamide is present in an amount of about 30 to 70 weight percent and said copolymer is present in a corresponding amount of between about 70 and 30 weight percent of the composition.
Claim 4
Dependent Claim
60 words
The composition of claim 1 wherein the copolymer is further characterized by having a number average molecular weight between about 500 and 5000 and the carboxylic acid of said copolymer is a member of the group consisting of unsaturated monocarboxylic acid of 3 to 6 carbon atoms, an unsaturated dicarboxylic acid of 4 to 8 carbon atoms, and mixtures thereof.
Claim 5
Dependent Claim
27 words
The composition of claim 3 wherein said copolymer has an acid number of at least 100 and a number average molecular weight between about 2000 and 4000.
Claim 6
Dependent Claim
32 words
The composition of claim 4 wherein the carboxylic acid of said copolymer is a member selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic acid and mixtures thereof.
Claim 7
Dependent Claim
15 words
The composition of claim 5 wherein the carboxylic acid of said copolymer is acrylic acid.
Claim 8
Dependent Claim
15 words
The composition of claim 5 wherein the carboxylic acid of said copolymer is methacrylic acid.
Claim 9
Dependent Claim
15 words
The composition of claim 4 wherein the carboxylic acid of said copolymer is fumaric acid.
Claim 10
Dependent Claim
15 words
The composition of claim 4 wherein the carboxylic acid of said copolymer is maleic acid.
Claim 11
Dependent Claim
13 words
The composition of claim 1 which additionally contains a tackifier or a diluent.
Claim 12
Dependent Claim
17 words
An article of manufacture comprising at least two adherent materials joined with the composition of claim 1.
Claim 13
Dependent Claim
17 words
The composition of claim 1 wherein said polyamide has a molecular weight between about 1,000 and 12,000.
Claim 14
Dependent Claim
32 words
The composition of claim 1 wherein said copolymer has a viscosity of 300 to 1,000 cps at 140° C and a Ring and Ball Softening point between about 70° and 100° C.
Claim 15
Dependent Claim
18 words
The composition of claim 1 wherein said copolymer has a number average molecular weight between 2,000 and 4,000.
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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) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |