Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1978-05-25
1980-01-15
Wong, Jr., Harry
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525250, 428426, 428430, 428442, 428458, 428463, 428464, 428480, 428500, 428511, 428532, C08L 6702
Patent
active
041840305
ABSTRACT:
In the use of certain metal salts of the hemi-perester of maleic acid as catalysts for the polymerization and curing of ethylenically unsaturated monomers and of methyl methacrylate-containing syrups the addition of an activator such as sodium bisulfite provides a substantial reduction in the curing time. The process is relatively insensitive to the amount of filler used. The salts of maleic hemi-peresters, in combination with the activators, are also useful for polymerizing ethylenically unsaturated monomers.
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patent: 3234194 (1966-02-01), Slocum
patent: 3362942 (1968-01-01), Munn
patent: 3484419 (1969-12-01), Rinkler et al.
patent: 3534122 (1970-10-01), Cornell
patent: 3639370 (1972-02-01), Edl et al.
patent: 3775364 (1973-11-01), Duggins
E. I. Du Pont de Nemours and Company
Wong, Jr. Harry
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