US3898203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epihalohydrin cure regulators
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1974-02-13
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Granted: 1975-08-05
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Expires: 1994-02-13
Abstract
Abstract A process for controlling premature curing of epihalohydrin polymers comprising heating an epihalohydrin homopolymer or a copolymer of epihalohydrin with a compound selected from the group consisting of sulfenamides of imidazolidones, phthalimides and hydantoins.
Inventors
- 👤 Michael A Fath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/43; C08K5/44
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
74 words
A PROCESS FOR CURING AN EPIHALOHYDRIN POLYMER SELECTED FROM THE GROUP CONSISTING OF (A) EPIHALOHYDRIN HOMONOLYMERS, AND (B) EPIHALOHYDRIN-ETHYLENE OXIDE COPOLYMERS, COMPRISING MIXING EPIHALOHYDRIN HOMOPOLYMER OR COPOLYMER WITH DIFUNCTIONAL CURING AGENTS WHICH REACT WITH THE HALOMETYL SIDE CHAINS OF TH POLYMER WHILE IN THE PRESENCE OF FROM ABOUT 0.5 ABOUT 7.0PARTS BY WEIGHT BASED ON THE POLYMER OF AN ORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF (1) IMIDAZOLIDONES HAVING THE GENERAL STRUCTURAL FORMULA
Claim 2
Dependent Claim
74 words
A PROCESS FOR CURING AN EPIHALOHYDRIN POLYMER SELECTED FROM THE GROUP CONSISTING OF (A) EPIHALOHYDRIN HOMONOLYMERS, AND (B) EPIHALOHYDRIN-ETHYLENE OXIDE COPOLYMERS, COMPRISING MIXING EPIHALOHYDRIN HOMOPOLYMER OR COPOLYMER WITH DIFUNCTIONAL CURING AGENTS WHICH REACT WITH THE HALOMETYL SIDE CHAINS OF TH POLYMER WHILE IN THE PRESENCE OF FROM ABOUT 0.5 ABOUT 7.0PARTS BY WEIGHT BASED ON THE POLYMER OF AN ORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF (1) IMIDAZOLIDONES HAVING THE GENERAL STRUCTURAL FORMULA
Claim 3
Dependent Claim
22 words
A process as described in claim 1 wherein the imidazolidones are selected from the group consisting of 1,3-bis(morpholinothio-2-imidazolidone; 1,3-bis(diisopropylaminothio)-2-imidazolidone; 1,3-bis(piperidinothio)-2-imidazolidone and 1,3-bis(di-n-butylaminothio)-2-imidazolidone.
Claim 4
Dependent Claim
13 words
A process as described in claim 1 wherein the hydantoin is 1, 3-bis(morpholinothio-5,5-dimethyl)-hydantoin.
Claim 5
Dependent Claim
15 words
A process as described in claim 1 wherein the epihalohydrin polymer is an epichlorohydrin homopolymer.
Claim 6
Dependent Claim
19 words
A process as described in claim 1 wherein the epihalohydrin polymer is a copolymer of epichlorohydrin and ethylene oxide.
Claim 7
Dependent Claim
28 words
A process as described in claim 1 wherein the organic material is present from 1.5 to 4.5 parts by weight per 100 parts by weight of the polymer.
Claim 8
Dependent Claim
27 words
A process as described in claim 1 wherein the cure regulators are used with metal oxides selected from tHe group consisting of zinc oxide and cadmium oxide.
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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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |