US3875084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl halide thioether polymers
Assignee: Hooker Chemical Corp
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Filing: 1973-08-10
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Granted: 1975-04-01
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Expires: 1993-08-10
Abstract
Abstract Polyvinyl halide thioethers having aryl groups substituted on sulfur and wherein the polymers are of from 20,000 to 100,000 number average molecular weight are prepared by the displacement of halogen in polyvinyl halide with an aryl mercaptide in a polar solvent at elevated temperature in the presence of substantially equivalent amount of an alkali metal alkylate. The polymer is characterized by having substantially greater thermostability as compared to the unmodified polyvinyl halide polymer good curability with formaldehyde in the manner of a phenolic and greater receptivity to dyes as compared to the unreacted polyvinyl halide, for example.
Inventors
- 👤 Edward D Weil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:54
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025; C08F; C08F8/00; C08F8/34; C08L; C08L27/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
41 words
A CROSSLINKING AGENT REACTIVE WITH A PHENOLIC RING OR THE PHENOLIC OH GROUP SELECTED FROM THE GROUP CONSISTING OF SULFUR DICHLORIDE, SULFUR MONOCHLORIDE, FORMALDEHYDE, A DIISOCYANATE, A RESINOUS REACTION PRODUCT CONTAINING A FORMALDEHYDE RESIDUE, A POLYEPOXIDE AND A DIACID CHLORIDE AND
Claim 2
Dependent Claim
41 words
A CROSSLINKING AGENT REACTIVE WITH A PHENOLIC RING OR THE PHENOLIC OH GROUP SELECTED FROM THE GROUP CONSISTING OF SULFUR DICHLORIDE, SULFUR MONOCHLORIDE, FORMALDEHYDE, A DIISOCYANATE, A RESINOUS REACTION PRODUCT CONTAINING A FORMALDEHYDE RESIDUE, A POLYEPOXIDE AND A DIACID CHLORIDE AND
Claim 3
Dependent Claim
4 words
A CURABLE COMPOSITION COMPRISING
Claim 4
Dependent Claim
4 words
A CURABLE COMPOSITION COMPRISING
Claim 5
Dependent Claim
26 words
a polyvinyl halide homopolymer of from about 20,000 to 100, 000 number average molecular weight modified to have 0.1 to 50% of units of the formula:
Claim 6
Dependent Claim
26 words
a polyvinyl halide homopolymer of from about 20,000 to 100, 000 number average molecular weight modified to have 0.1 to 50% of units of the formula:
Claim 7
Dependent Claim
56 words
a copolymer consisting of: a. a vinyl halide and b. up to 15% of an unsaturated ester of 3 to 20 carbon atoms, c. said copolymer having a molecular weight of from about 20, 000 to about 100,000 number average molecular weight, and d. said copolymer having 0.1% to about 50% of units of the formula:
Claim 8
Dependent Claim
56 words
a copolymer consisting of: a. a vinyl halide and b. up to 15% of an unsaturated ester of 3 to 20 carbon atoms, c. said copolymer having a molecular weight of from about 20, 000 to about 100,000 number average molecular weight, and d. said copolymer having 0.1% to about 50% of units of the formula:
Claim 9
Dependent Claim
10 words
The curable composition of claim 1 wherein R2 is hydroxyphenyl.
Claim 10
Dependent Claim
25 words
A POLYVINYL HALIDE HOMOPOLYMER OF FROM ABOUT 20,000 TO 100,000 NUMBER AVERAGE MOLECULAR WEIGHT MODIFIED TO HAVING 0.1 TO 50% OF UNITS OF THE FORMULA:
Claim 11
Dependent Claim
25 words
A POLYVINYL HALIDE HOMOPOLYMER OF FROM ABOUT 20,000 TO 100,000 NUMBER AVERAGE MOLECULAR WEIGHT MODIFIED TO HAVING 0.1 TO 50% OF UNITS OF THE FORMULA:
Claim 12
Dependent Claim
4 words
A curable composition comprising
Claim 13
Dependent Claim
4 words
A curable composition comprising
Claim 14
Dependent Claim
10 words
The curable composition of claim 3 wherein R2 is hydroxyphenyl.
Claim 15
Dependent Claim
12 words
The curable composition of claim 1 wherein said diisocyanate is 2,4-tolylene diisocyanate.
Claim 16
Dependent Claim
12 words
The curable composition of claim 1 wherein said polyepoxide is dicyclopentadiene diepoxide.
Claim 17
Dependent Claim
14 words
The curable composition of claim 1 wherein said diacid chloride is succinic acid dichloride.
Claim 18
Dependent Claim
13 words
The curable composition of claim 1 wherein said formaldehyde is provided by paraformaldehyde.
Claim 19
Dependent Claim
14 words
The curable composition of claim 1 wherein said resinous reaction product is a resole.
Claim 20
Dependent Claim
11 words
The composition of claim 9 wherein said resole is dimethylol phenol.
References Cited (Backward Citations)
US3655618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |