Hardenable epoxide resin compositions containing nitrophenolic hardening retardants and process for retarding the hardening of epoxide resin compositions
Abstract
Abstract A PROCESS FOR RETARDING THE HARDENING OF AN EPOXIDE RESIN AT ELEVATED TEMPERATURES WHICH COMPRISES ADMIXING A RETARDING AMOUNT OF AN AROMATIC ACIDIC PHENOLIC COMPOUND HAVING AT LEAST ONE ACIDIC PHENOLIC HYDROXYL AND AT LEAST TWO NITRO GROUPS IN THE MOLECULE TO A HARDENABLE MIXTURE OF (1) A HARDENABLE EPOXIDE COMPOUND CONTAINING MORE THAN ONE EPOXIDE GROUP IN THE MOLECULE AND (2) AN ORGANIC POLYCARBOXYLIC ACID ANHYDRIDE EPOXIDE RESIN HARDENER, SAID HARDENABLE MIXTURE BEING MAINTAINED AT A TEMPERATURE SUFFICIENT TO CAUSE AN EPOXIDE RESIN HARDENING REACTION. THE COMPOSITIONS CONTAINING THE AROMATIC ACIDIC PHENOLIC COMPOUND DELAY THE HARDENING OF THE HARDENABLE EPOXIDE RESIN MIXTURE FOR VARYING TIMES DEPENDING ON THE AMOUNT OF RETARDING COMPOUND UTILIZED AS WELL AS THE HARDENABLE EPOXIDE RESIN AND THE TEMPERATURE.
Inventors
- 👤 Erwin Weinrich
- 👤 Manered Budnowski
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
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