US2965586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-hardenable compositions composed of polyvinyl chloride, epoxy resin and hardening agent, cellular product and method of preparing same
Assignee: BASF Schweiz AG
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Filing: 1958-02-25
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Granted: 1960-12-20
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Expires: 1978-02-25
Abstract
No abstract record available.
Inventors
- 👤 Fisch Willy
- 👤 Hiltpold Robert
- 👤 Batzer Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:33
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4215; C08K; C08K5/00; C08K5/04; C08K5/09; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L63/00; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/06; C09D163/00; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; C08J2463/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
65 words
A HEAT-HARDENABLE COMPOSITION WHICH HAS A PASTELIKE TO LIQUID CONSISTENCY AT ROOM TEMPERATURE AND WHICH CONSISTS OF POLYVINYL CHLORIDE IN POWDER FORM, AN 1,2EPOXY RESIN IN WHICH THE OXYGEN ATOM IS ATTACHED TO ADJACENT CARBON ATOMS, AND AS A HARDENING AGENT FOR SAID 1,2-EPOXY RESIN A POLYCARBOXYLIC ANHYDRIDE SELECTED FROM THE CLASS CONSISTING OF HEXAHYDROPHTHALIC ACID ANHYDRIDE, METHYL-ENDOMETHYLENE-TETRAHYDROPHTHALIC ACID ANHYDRIDE AND DODECENYL SUCCINIC ACID ANHYDRIDE.
Claim 2
Dependent Claim
65 words
A HEAT-HARDENABLE COMPOSITION WHICH HAS A PASTELIKE TO LIQUID CONSISTENCY AT ROOM TEMPERATURE AND WHICH CONSISTS OF POLYVINYL CHLORIDE IN POWDER FORM, AN 1,2EPOXY RESIN IN WHICH THE OXYGEN ATOM IS ATTACHED TO ADJACENT CARBON ATOMS, AND AS A HARDENING AGENT FOR SAID 1,2-EPOXY RESIN A POLYCARBOXYLIC ANHYDRIDE SELECTED FROM THE CLASS CONSISTING OF HEXAHYDROPHTHALIC ACID ANHYDRIDE, METHYL-ENDOMETHYLENE-TETRAHYDROPHTHALIC ACID ANHYDRIDE AND DODECENYL SUCCINIC ACID ANHYDRIDE.
Claim 3
Independent Claim
125 words
A METHOD FOR PRODUCING CELLULAR BODIES WHICH COMPRISES HEATING IN CONFINEMENT A HEAT HARDENABLE COMPOSITION WHICH HAS A PASTE-LIKE TO LIQUID CONSISTENCY AT ROOM TEMPERATURE AND WHICH CONSISTS OF POLYVINYL CHLORIDE IN POWDER FORM, AN 1,2-EPOXY RESIN IN WHICH THE OXYGEN ATOM IS ATTACHED TO ADJACENT CARBON ATOMS, AND AS A HARDENING AGENT FOR SAID 1,2-EPOXY RESIN A POLYCARBOXYLIC ACID ANHYDRIDE SELECTED FROM THE CLASS CONSISTING OF HEXAHYDROPHTHALIC ACID ANHYDRIDE, METHYL-ENDOMETHYLENETETRAHYDROPHTHALIC ACID ANHYDRIDE AND DODECENYL SUCCINIC ACID ANHYDRIDE, AND WHICH COMPOSITION FURTHER CONTAINS A BLOWING AGENT SELECTED FROM THE CLASS CONSISTING OF AZODI(ISOBUTYRONITRILE) AND AZO-HEXAHYDROBENZONITRILE, RELEASING THE MOLDED ARTICLE FROM CONFINEMENT AFTER COOLING, WHEREUPON AN INITIAL EXPANSION TAKES PLACE, AND THEN HEATING THE MOLDED ARTICLE WITHOUT CONFINEMENT UNTIL FINAL EXPANSION AND HARDENING IS BROUGHT ABOUT.
Claim 4
Independent Claim
125 words
A METHOD FOR PRODUCING CELLULAR BODIES WHICH COMPRISES HEATING IN CONFINEMENT A HEAT HARDENABLE COMPOSITION WHICH HAS A PASTE-LIKE TO LIQUID CONSISTENCY AT ROOM TEMPERATURE AND WHICH CONSISTS OF POLYVINYL CHLORIDE IN POWDER FORM, AN 1,2-EPOXY RESIN IN WHICH THE OXYGEN ATOM IS ATTACHED TO ADJACENT CARBON ATOMS, AND AS A HARDENING AGENT FOR SAID 1,2-EPOXY RESIN A POLYCARBOXYLIC ACID ANHYDRIDE SELECTED FROM THE CLASS CONSISTING OF HEXAHYDROPHTHALIC ACID ANHYDRIDE, METHYL-ENDOMETHYLENETETRAHYDROPHTHALIC ACID ANHYDRIDE AND DODECENYL SUCCINIC ACID ANHYDRIDE, AND WHICH COMPOSITION FURTHER CONTAINS A BLOWING AGENT SELECTED FROM THE CLASS CONSISTING OF AZODI(ISOBUTYRONITRILE) AND AZO-HEXAHYDROBENZONITRILE, RELEASING THE MOLDED ARTICLE FROM CONFINEMENT AFTER COOLING, WHEREUPON AN INITIAL EXPANSION TAKES PLACE, AND THEN HEATING THE MOLDED ARTICLE WITHOUT CONFINEMENT UNTIL FINAL EXPANSION AND HARDENING IS BROUGHT ABOUT.
References Cited (Backward Citations)
US2739134A
Cited
GB783956A
Cited
US2795565A
Cited
US2717216A
Cited
US2825282A
Cited
US2839495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |