Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1980-06-04
1982-07-27
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
428378, 428391, 523402, 523426, C08L 6300
Patent
active
043418775
ABSTRACT:
A sizing composition for use in a process of producing sized glass fiber strands that can be used in reinforcing polymers is provided. Also provided are the sized glass fiber strands, glass fiber reinforced polymers and processes for producing these materials. The sizing composition comprises one or more organo silane coupling agents, a major amount of the solids of the aqueous sizing composition is an epoxidized polar thermoplastic copolymer where there are three to about twelve parts of epoxy per 100 parts of the other comonomer and one or more nonionic, cationic or anionic lubricants. The sizing composition can also have one or more compatibilizing agents such as a polyvinyl-acetate-ethylene copolymer unsaturated polyester resins, polyvinylacetate homopolymer, epoxy polymers and epoxy polyester copolymers. The comonomers for the epoxidized polar thermoplastic copolymer are vinyl acetate, acrylates, polyurethane condensate monomer, polyester condensate monomer, and polyamide condensate monomer. The epoxidized polar thermoplastic copolymer has a Tg in the range of ambient temperatures to about 70.degree. C. The glass fiber strands treated with this sizing composition can be made into roving for use in producing glass fiber reinforced polymers like polyester polymers, vinyl ester polymers and epoxy polymers.
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European Patent Application 0000683 filed July 28, 1978; published Feb. 7, 1979.
Das Balbhadra
Tucker Billie D.
Michl Paul R.
PPG Industries Inc.
Stachel Kenneth J.
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