US4217430A
Expired / Lapsed
US
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Graft copolymer of neutralized acid copolymer trunk and polyamide oligomeric branches and method for making such copolymer
Assignee: EIDP Inc
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Filing: 1978-08-01
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Granted: 1980-08-12
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Expires: 1998-08-01
Abstract
Abstract A graft copolymer is disclosed made from a trunk copolymer of ethylene and α,β-ethylenically unsaturated monocarboxylic acid partially neutralized by zinc, cadmium, or lead ions and from branches of polyamide oligomers. The metal ions facilitate grafting polyamide to monocarboxylic groups.
Inventors
- 👤 Howard W. Starkweather, Jr.
- 👤 Michael J. Mutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:26
CPC Classifications
C; C08; C08G; C08G81/00; C08G81/02; C08G81/024; Y; Y10; Y10S; Y10S525/00; Y10S525/919
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
102 words
A process for making a graft copolymer comprising the steps of neutralizing some of the carboxylic acid groups on a trunk copolymer derived from ethylene and α,β-ethylenically unsaturated monocarboxylic acid by reactive contact between the carboxylic acid groups and metal ions selected from the group consisting of zinc, cadmium, and lead and adding a polyamide oligomer in reactive contact with the carboxylic acid groups and in the presence of the metal ions in the trunk copolymer whereby the polyamide oligomer is grafted onto the trunk copolymer by an amino group on the oligomer to a carboxylic acid group on the trunk copolymer.
Claim 2
Dependent Claim
102 words
A process for making a graft copolymer comprising the steps of neutralizing some of the carboxylic acid groups on a trunk copolymer derived from ethylene and α,β-ethylenically unsaturated monocarboxylic acid by reactive contact between the carboxylic acid groups and metal ions selected from the group consisting of zinc, cadmium, and lead and adding a polyamide oligomer in reactive contact with the carboxylic acid groups and in the presence of the metal ions in the trunk copolymer whereby the polyamide oligomer is grafted onto the trunk copolymer by an amino group on the oligomer to a carboxylic acid group on the trunk copolymer.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the polyamide oligomer is a polylactam.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein the polyamide oligomer is derived from an omega-amino acid.
Claim 5
Dependent Claim
41 words
The process of claim 1 wherein molecules of the polyamide oligomer are terminated on one end by a primary amino group and are terminated on the other end by an N-alkyl amide group with alkyl having 1 to 20 carbon atoms.
Claim 6
Dependent Claim
18 words
The process of claim 1 wherein the polyamide oligomer has a degree of polymerization of 6 to 35.
Claim 7
Dependent Claim
18 words
The process of claim 1 wherein the polyamide oligomer has a degree of polymerization of 6 to 15.
Claim 8
Dependent Claim
24 words
The process of claim 1 wherein the polyamide oligomer is added in an amount of 20 to 75 weight percent of the graft copolymer.
Claim 9
Dependent Claim
24 words
The process of claim 1 wherein the polyamide oligomer is added in the amount of 30 to 40 weight percent of the graft copolymer.
Claim 10
Dependent Claim
25 words
The process of claim 1 wherein the neutralizing step is accomplished by intimate contact between molten trunk copolymer and a compound of the metal ions.
Claim 11
Dependent Claim
29 words
The process of claim 9 wherein the compound of the metal ions includes an anion selected from the group consisting of formate, acetate, hydroxide, oxide, nitrate, carbonate, and bicarbonate.
Claim 12
Dependent Claim
14 words
The process of claim 1 wherein the α,β-ethylenically unsaturated monocarboxylic acid is methacrylic acid.
Claim 13
Dependent Claim
14 words
The process of claim 1 wherein the α,β-ethylenically unsaturated monocarboxylic acid is acrylic acid.
Claim 14
Dependent Claim
25 words
The process of claim 1 wherein 15 to 80 percent of the carboxylic acid groups in the trunk copolymer are neutralized in the neutralizing step.
Claim 15
Dependent Claim
25 words
The process of claim 1 wherein 35 to 65 percent of the carboxylic acid groups in the trunk copolymer are neutralized in the neutralizing step.
Claim 16
Dependent Claim
41 words
The process of claim 1 wherein the number of unneutralized carboxylic acid groups remaining after the acid neutralizing step is at least as great as the number of primary amine groups in the polyamide oligomer added in the oligomer adding step.
Claim 17
Dependent Claim
71 words
A graft copolymer consisting essentially of a trunk copolymer derived from ethylene and α,β-ethylenically unsaturated monocarboxylic acid having 15 to 80 percent of the monocarboxylic acid groups neutralized by a metal ion selected from the group consisting of zinc, cadmium, and lead and side chains derived from polyamide oligomer and grafted onto the trunk copolymer by an amino group on the oligomer to a carboxylic acid group on the trunk copolymer.
Claim 18
Dependent Claim
71 words
A graft copolymer consisting essentially of a trunk copolymer derived from ethylene and α,β-ethylenically unsaturated monocarboxylic acid having 15 to 80 percent of the monocarboxylic acid groups neutralized by a metal ion selected from the group consisting of zinc, cadmium, and lead and side chains derived from polyamide oligomer and grafted onto the trunk copolymer by an amino group on the oligomer to a carboxylic acid group on the trunk copolymer.
Claim 19
Dependent Claim
14 words
The copolymer of claim 16 wherein the α,β-ethylenically unsaturated monocarboxylic acid is methacrylic acid.
Claim 20
Dependent Claim
14 words
The copolymer of claim 16 wherein the α,β-ethylenically unsaturated monocarboxylic acid is acrylic acid.
Claim 21
Dependent Claim
18 words
The copolymer of claim 16 wherein the polyamide oligomer has a degree of polymerization of 6 to 35.
Claim 22
Dependent Claim
12 words
The copolymer of claim 16 wherein the polyamide oligomer is a polylactam.
Claim 23
Dependent Claim
30 words
The copolymer of claim 16 wherein molecules of the polyamide oligomer are terminated on ungrafted ends, by an N-alkyl amide group wherein the alkyl is 1 to 20 carbon atoms.
Claim 24
Dependent Claim
15 words
The copolymer of claim 16 wherein the polyamide oligomer is derived from an omega-amino acid.
Claim 25
Dependent Claim
21 words
The copolymer of claim 16 wherein the polyamide oligomer is present as 20 to 75 weight percent of the graft copolymer.
Claim 26
Dependent Claim
21 words
The copolymer of claim 16 wherein the polyamide oligomer is present as 30 to 40 weight percent of the graft copolymer.
Claim 27
Dependent Claim
34 words
The copolymer of claim 16 wherein the side chains are polycaprolactam and wherein the copolymer has two DTA melting points, one at 80° to 115° C. and the other at at least 165° C.
Claim 28
Dependent Claim
15 words
The copolymer of claim 25 wherein the melt flow temperature is above about 115° C.
Claim 29
Dependent Claim
34 words
The copolymer of claim 16 wherein the side chains are polylaurolactam and wherein the copolymer has two DTA melting points, one at 80° to 115° C. and the other at at least 150° C.
Claim 30
Dependent Claim
15 words
The copolymer of claim 29 wherein the melt flow temperature is above about 115° C.
Claim 31
Dependent Claim
69 words
A graft copolymer consisting essentially of a trunk copolymer of ethylene and α,β-ethylenically unsaturated monocarboxylic acid and side chains of polyamide oligomer grafted onto the trunk copolymer by an amino group on the oligomer to a carboxylic acid group on the trunk copolymer wherein 15 to 80 percent of the monocarboxylic acid groups are neutralized by a metal ion selected from the group consisting of zinc, cadmium, and lead.
Claim 32
Dependent Claim
69 words
A graft copolymer consisting essentially of a trunk copolymer of ethylene and α,β-ethylenically unsaturated monocarboxylic acid and side chains of polyamide oligomer grafted onto the trunk copolymer by an amino group on the oligomer to a carboxylic acid group on the trunk copolymer wherein 15 to 80 percent of the monocarboxylic acid groups are neutralized by a metal ion selected from the group consisting of zinc, cadmium, and lead.
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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) | 1983-08-12 | 1984-02-11 | 1984-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-12 | 1988-02-11 | 1988-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-12 | 1992-02-11 | 1992-08-12 | $7700.00 | Window Closed / Lapsed |