US3855194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing resinous homopolymers and copolymers of butadiene of high 1,2-configuration
Assignee: Bridgestone Firestone Inc
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Filing: 1973-10-16
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Granted: 1974-12-17
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Expires: 1993-10-16
Abstract
Abstract A polymer of the class consisting of a homopolymer of butadiene or a copolymer of butadiene and styrene or the like, at least 40% of which polymer is butadiene and at least 80% of the repeating butadiene units are of the 1,2-configuration, is cured in two stages with peroxides using cobalt and iron naphthenates as accelerators, and preferably with pentanedione as an activator.
Inventors
- 👤 W Conard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/07; C08F; C08F279/00; C08F279/02; C08K5/09; C08K5/098; Y; Y10; Y10S; Y10S260/00; Y10S260/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
THE IMPROVEMENT IN THE TWO STAGE PROCESS OF PEROXIDECURING A POLYMER OF THE CLASS CONSISTING OF RESINOUS HOMOPOLYMERS OF BUTADIENE AND COPOLYMERS OF BUTADIENE AND STYRENE, WITH AND WITHOUT SOLUTION IN STYRENE-TYPE MONOMERS, SAID RESIN COMPRISING AT LEAST 40% OF BUTADIENE AND AT LEAST 80% OF THE REPEATING BUTADIENE UNITS BEING OF THE 1,2-CONFIGURATION, WHICH IMPROVEMENT COMPRISES CURING, IN THE FIRST STAGE, WITH 0.2 TO 5 PARTS PER 100 PARTS OF THE RESIN OF A LOWERTEMPERATURE-CURING PEROXIDE AT 50* TO 150*F. OF A MIXTURE OF COBALT AND IRON NAPHTHENATES AND 1O TO 30 PARTS OF PENTANEDIONE, USING COBALT AND IRON NAPHTHENATES IN THE RATIO OF 3 TO 50 PARTS BY EIGHT OF COBALT NAPHTHENATE TO 1 PART OF IRON NAPHTHENATE, 0.2 TO 2 PARTS BY WEIGHT OF COBALT BEING USED PER 100 PARTS OF THE PEROXIDE AND IN THE SECOND STAGE, POST-CURING WITH A HIGH-TEMPERATURE CURING PEROXIDE AT 250* TO 400*F.
Claim 2
Dependent Claim
151 words
THE IMPROVEMENT IN THE TWO STAGE PROCESS OF PEROXIDECURING A POLYMER OF THE CLASS CONSISTING OF RESINOUS HOMOPOLYMERS OF BUTADIENE AND COPOLYMERS OF BUTADIENE AND STYRENE, WITH AND WITHOUT SOLUTION IN STYRENE-TYPE MONOMERS, SAID RESIN COMPRISING AT LEAST 40% OF BUTADIENE AND AT LEAST 80% OF THE REPEATING BUTADIENE UNITS BEING OF THE 1,2-CONFIGURATION, WHICH IMPROVEMENT COMPRISES CURING, IN THE FIRST STAGE, WITH 0.2 TO 5 PARTS PER 100 PARTS OF THE RESIN OF A LOWERTEMPERATURE-CURING PEROXIDE AT 50* TO 150*F. OF A MIXTURE OF COBALT AND IRON NAPHTHENATES AND 1O TO 30 PARTS OF PENTANEDIONE, USING COBALT AND IRON NAPHTHENATES IN THE RATIO OF 3 TO 50 PARTS BY EIGHT OF COBALT NAPHTHENATE TO 1 PART OF IRON NAPHTHENATE, 0.2 TO 2 PARTS BY WEIGHT OF COBALT BEING USED PER 100 PARTS OF THE PEROXIDE AND IN THE SECOND STAGE, POST-CURING WITH A HIGH-TEMPERATURE CURING PEROXIDE AT 250* TO 400*F.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |