US3950313A
Expired / Lapsed
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Nitrogen polymer compositions having thermally reversible cross-links resulting from treatment with organometallic compounds
Assignee: Monsanto Chemicals Ltd
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Filing: 1972-11-06
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Granted: 1976-04-13
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Expires: 1992-11-06
Abstract
Abstract Polymer compositions and processes for preparing polymer compositions having thermally reversible cross-links are described which compositions comprise a polymer having nitrogen atom-containing groups pendant from the polymer chain cross-linked by co-ordination bonds of nitrogen atoms of adjacent chains with the metal atom of a metal-containing organic compound in which the metal atom is attached to the organic moiety through sulfur or oxygen.
Inventors
- 👤 Peter James Stratford Bain
- 👤 William Rees Foster
- 👤 Alan Jeffrey Neale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:37
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0091; C08C; C08C19/00; C08C19/30; C08F; C08F8/00; C08F8/42; C08K5/04; C08K5/09; C08K5/098; Y; Y10; Y10S; Y10S260/00; Y10S260/31
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
100 words
A polymer composition comprising an elastomeric polymer having nitrogen atom-containing groups pendant from the polymer chain whch polymer is a copolymer of a conjugated diene and a nitrogen atom-containing monomer or an interpolymer of a conjugated diene, a nitrogen atom-containing monomer and at least one other ethylenically unsaturated monomer, and a cross-link agent consisting essentially of an organometallic compound selected from the group consisting of metal carboxylate, a metal thiocarboxylate, metal alkoxide, mercaptide, metal dithiocarbamate and metal phosphorodithioate containing a metal atom which forms thermally reversible cross-links with the nitrogen atoms of at least two of the said pendant groups.
Claim 2
Dependent Claim
100 words
A polymer composition comprising an elastomeric polymer having nitrogen atom-containing groups pendant from the polymer chain whch polymer is a copolymer of a conjugated diene and a nitrogen atom-containing monomer or an interpolymer of a conjugated diene, a nitrogen atom-containing monomer and at least one other ethylenically unsaturated monomer, and a cross-link agent consisting essentially of an organometallic compound selected from the group consisting of metal carboxylate, a metal thiocarboxylate, metal alkoxide, mercaptide, metal dithiocarbamate and metal phosphorodithioate containing a metal atom which forms thermally reversible cross-links with the nitrogen atoms of at least two of the said pendant groups.
Claim 3
Dependent Claim
38 words
The composition of claim 1 in which the amount of cross-link agent is within the range of 0.5 to 10 parts by weight per 100 parts by weight polymer and in which the nitrogen atom-containing monomer is 4-vinylpyridine.
Claim 4
Dependent Claim
13 words
The composition of claim 2 in which the metal is zinc or nickel.
Claim 5
Dependent Claim
20 words
The composition of claim 3 in which the organic compound is one in which the metal is already partially complexed.
Claim 6
Dependent Claim
39 words
The composition of claim 4 in which the organic compound is a complex of zinc with two molecules of 2-mercaptobenzothiazole, a complex of nickel with two molecules of 2-mercaptobenzothiazole, or a complex of nickel with two molecules of 2-mercaptobenzoxazole.
Claim 7
Dependent Claim
13 words
The composition of claim 4 in which the organic compound is nickel acetylacetonate.
Claim 8
Dependent Claim
18 words
The composition of claim 3 in which the organic compound is a nickel carboxylate or a nickel dialkyldithiocarbamate.
Claim 9
Dependent Claim
100 words
A cross-linked polymer composition comprising an elastomeric polymer having nitrogen atom-containing groups pendant from the polymer chain which polymer is a copolymer of a conjugated diene and a nitrogen atom-containing monomer or an interpolymer of a conjugated diene, a nitrogen atom-containing monomer and at least one other ethylenically unsaturated monomer in which the cross-links consist essentially of thermally reversible cross-links formed by co-ordination of the nitrogen atoms of pendant groups of adjacent chains with the metal atom of a metal-containing organic compound selected from the group consisting of metal carboxylate, metal thiocarboxylate, metal alkoxide, mercaptide, metal dithiocarbamate and metal phosphorodithioate.
Claim 10
Dependent Claim
100 words
A cross-linked polymer composition comprising an elastomeric polymer having nitrogen atom-containing groups pendant from the polymer chain which polymer is a copolymer of a conjugated diene and a nitrogen atom-containing monomer or an interpolymer of a conjugated diene, a nitrogen atom-containing monomer and at least one other ethylenically unsaturated monomer in which the cross-links consist essentially of thermally reversible cross-links formed by co-ordination of the nitrogen atoms of pendant groups of adjacent chains with the metal atom of a metal-containing organic compound selected from the group consisting of metal carboxylate, metal thiocarboxylate, metal alkoxide, mercaptide, metal dithiocarbamate and metal phosphorodithioate.
Claim 11
Dependent Claim
38 words
The composition of claim 8 in which the amount of cross-link agent is within the range of 0.5 to 10 parts by weight per 100 parts by weight polymer and in which the nitrogen atom-containing monomer is 4-vinylpyridine.
Claim 12
Dependent Claim
13 words
The composition of claim 9 in which the metal is zinc or nickel.
Claim 13
Dependent Claim
20 words
The composition of claim 10 in which the organic compound is one in which the metal is already partially complexed.
Claim 14
Dependent Claim
39 words
The composition of claim 11 in which the organic compound is a complex of zinc with two molecules of 2-mercaptobenzothiazole, a complex of nickel with two molecules of 2-mercaptobenzothiazole, or a complex of nickel with two molecules of 2-mercaptobenzoxazole.
Claim 15
Dependent Claim
13 words
The composition of claim 11 in which the organometallic compound is nickel acetylacetonate.
Claim 16
Dependent Claim
18 words
The composition of claim 10 in which the organic compound is a nickel carboxylate or a nickel dialkyldithiocarbamate.
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) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |