Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1994-11-08
1995-11-14
Sweet, Mark
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525535, 528373, C08F28300
Patent
active
054667631
ABSTRACT:
A process is disclosed for preparing a polysulfide-epoxy prepolymer and cured co-polymer using a heavy ends waste generated in chlorinated hydrocarbon production. The process comprises first distilling the heavy ends waste to form an enriched heavy ends waste with an ethylene dichloride content less than about 10% by weight. The enriched heavy ends waste is then reacted with an alkaline polysulfide within a temperature range of about 50.degree. C. to about 150.degree. C. to form a polysulfide polymer mixture. Next, between about 5 and about 300 parts of the polysulfide polymer mixture is co-reacted with a hundred parts by weight of an epoxy resin to form a polysulfide-epoxy prepolymer or a cured co-polymer if a curing agent is present.
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Peterson, E. A., Polysulfides, Adhesive Materials: Chemical Families, pp. 138-142.
Rees, T. M., et al., The Modern Approach to Modifying Epoxy Resins Using Liquid Polysulfides: Part 1, JOCCA pp. 39-46.
Chang Tao C.
Huang Yung-Hui
Lee Chester C.
Driscoll Stephen J.
Formosa Plastics Corporation
Glynn Kenneth P.
Sweet Mark
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