US3255152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of organopolysiloxane elastomers with improved heat resistance
Assignee: Bayer AG
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Filing: 1963-05-06
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Granted: 1966-06-07
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Expires: 1983-05-06
Abstract
No abstract record available.
Inventors
- 👤 Kniege Wilfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:12
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN A PROCESS FOR THE PRODUCTION OF ORGANOPOLYSILOXANE ELASTOMERS BY HEATING TO A TEMPERATURE IN THE RANGE OF 250*C. AND MORE, A MIXTURE CONTAINING HEAT CURABLE LONG-CHAIN DIHYDROCARBOSILOXANE POLYMERS, FILLERS AND ALKYL OR ARYLALKYL PEROXIDES, THE HYDROCARBON RADICALS OF SAID DIHYDROCARBOSILOXANE POLYMERS BEING SELECTED FROM THE GROUP CONSISTING OF METHYL, VINYL AND PHENY, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID MIXTURE A METALLIC ADDITIVE HAVING A MELTING POINT OF FROM 125 TO 248*C., SELECTED FROM THE GROUP CONSISTING OF TIN AND ALLOYS OF BISMUTH AND CADMIUM, BISMUTH AND LEAD, BISMUTH AND TIN, CADMIUM AND LEAD, CADMIUM AND TIN, TIN, COPPER AND ANTIMONY, TIN AND ZINC, AND CADMIUM, LEAD AND TIN, IN AN AMOUNT FROM 0.5 TO 50 G. PER 100 G. OF SAID DIHYDROCARBOSILOXANE POLYMERS.
Claim 2
Dependent Claim
125 words
IN A PROCESS FOR THE PRODUCTION OF ORGANOPOLYSILOXANE ELASTOMERS BY HEATING TO A TEMPERATURE IN THE RANGE OF 250*C. AND MORE, A MIXTURE CONTAINING HEAT CURABLE LONG-CHAIN DIHYDROCARBOSILOXANE POLYMERS, FILLERS AND ALKYL OR ARYLALKYL PEROXIDES, THE HYDROCARBON RADICALS OF SAID DIHYDROCARBOSILOXANE POLYMERS BEING SELECTED FROM THE GROUP CONSISTING OF METHYL, VINYL AND PHENY, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID MIXTURE A METALLIC ADDITIVE HAVING A MELTING POINT OF FROM 125 TO 248*C., SELECTED FROM THE GROUP CONSISTING OF TIN AND ALLOYS OF BISMUTH AND CADMIUM, BISMUTH AND LEAD, BISMUTH AND TIN, CADMIUM AND LEAD, CADMIUM AND TIN, TIN, COPPER AND ANTIMONY, TIN AND ZINC, AND CADMIUM, LEAD AND TIN, IN AN AMOUNT FROM 0.5 TO 50 G. PER 100 G. OF SAID DIHYDROCARBOSILOXANE POLYMERS.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |