Fluoroacrylic polymer having lubricating effect and thermoplastic resin composition comprising same
AssigneeMitsubishi Rayon Co., Ltd.
InventorsYutaka Toyooka, Kohji Matsumoto, Hideki Koizumi, Masahiro Kaneda, Kenji Okano
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Abstract
A fluoroacrylic polymer having a lubricating effect, which comprises at least one kind selected from units derived from a fluoroalkyl acrylate and units derived from a fluoroalkyl methacrylate as a part or all of structural units and a reducing viscosity .eta.Sp/C not higher than 2 as measured at 25.degree. C. with respect to a solution of 0.1 g of the polymer in 100 ml of chloroform. The fluoroacrylic polymer is incorporated into a thermoplastic resin for rendering an excellent lubricating property thereto.
Claims9
A fluoroacrylic polymer having a lubricating effect, which comprises at least one member selected from the group consisting of units derived from a fluoroalkyl acrylate and units derived from a fluoroalkyl methacrylate as a part of all of structural units and a reducing viscosity .eta.Sp/C not higher than 2 as measured at 25.degree. C. with respect to a solution of 0.1 g of the polymer in 100 ml of chloroform, wherein when the fluoroacrylic polymer is a random copolymer, the random copolymer has a T.sub.g of no higher than 70.degree. C., wherein when the fluoroacrylic polymer is prepared by a two-stage polymerization process, the resulting polymer has a T.sub.g of no higher than 70.degree. C. after a first stage of the polymerization or after a second stage of the polymerization, and wherein when the fluoroacrylic polymer is prepared by a three-stage polymerization process, a polymer obtained by the second stage of the polymerization has a T.sub.g of no higher than 70.degree. C.
Dependencies are inferred from the claim text.