Lubricant for thermoplastic resins and thermoplastic resin...

Details Lubricant for thermoplastic resins and thermoplastic resin... Lubricant for thermoplastic resins and thermoplastic resin...

C - Chemistry, Metallurgy

08

F

400/2026, 400/30

C08F 285/00 (2006.01) C08L 23/06 (2006.01) C08L 25/06 (2006.01) C08L 27/06 (2006.01) C08L 33/10 (2006.01) C08L 55/02 (2006.01) C08L 57/00 (2006.01) C08L 51/00 (2006.01)

Patent

CA 1255413

LUBRICANT FOR THERMOPLASTIC RESINS AND THERMOPLASTIC RESIN COMPOSITION COMPRISING SAID LUBRICANT ABSTRACT OF THE DISCLOSURE Disclosed is a lubricant for thermoplastic resins, which is prepared by (A) polymerizing 60 - 100 wt.% of an aromatic vinyl monomer and 0 - 40 wt.% of other vinyl monomer copolymerizable therewith to form a polymer, (B) polymerizing 30 - 70 wt. parts of a monomer or monomer mixture comprising 50 - 100 wt.% of an acrylic acid ester and 0 - 50 wt.% of other vinyl monomer or monomers copolymerizable therewith in the presence of 10 - 60 wt. parts of said polymer so that when said monomer or monomer mixture is singly polymerized, the reduced viscosity of the resulting polymer is lower than 1.0, to obtain a polymer, and (C) polymerizing 5 - 30 wt. parts of a methacrylic acid ester in the presence of the two-stage polymer obtained at the steps (A) and (B) so that the total amount of the components (A), (B) and (C) is 100 wt. parts. A thermoplastic resin composition comprising this lubricant has an excellent mold release characteristics and lubricating property at the molding step, and a molded article prepared from this composition has a good gloss.

508594

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