Retarders for curing phenolic resole resins

Details Retarders for curing phenolic resole resins Retarders for curing phenolic resole resins

1991-12-09

1992-09-08

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525508, 528129, C08F28300, C08G 828, C08L 6100, C08L 8504

Patent

active

051459132

ABSTRACT:
There are disclosed methods and compositions for retarding the room temperature gelation and eventual hardening of phenolic resole resins when such resins are mixed with lightburned magnesium oxide or magnesium hydroxide hardening agents with or without an ester functional hardening agent. Retardation of gelation and hardening is achieved by incorporating into said mixture a compound which decreases the solubility of magnesium in said mixture. Additionally, hardening at higher temperatures, thermal curing, as well as refractories, coated abrasives, polymer concrete, and other methods and compositions of this invention are disclosed.

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