Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-06-02
1993-05-25
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
Patent
active
052141110
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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Borden Inc.
Kight III John
Maskas George P.
Mosley T.
Rainear Dennis H.
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