Patent Number: 6,251,975

Title: Dispersibility improver for fluororesin powders, modifier for organic resins, and organic resin compositions

Abstract: This invention pertains to a dispersibility improver for fluororesin powders that has the ability to induce the uniform dispersion of fluororesin powders in organic resins; a modifier for application to organic resins wherein said modifier comprises fluororesin powder and the aforesaid dispersibility improver; and finally organic resin compositions that contain the aforesaid modifier and as a consequence have the ability to form uniform and transparent coatings having an excellent surface smoothness. The dispersibility improver for fluororesin powders is a polyorganosiloxane whose molecule contains (F1) at least 1 organic group selected from the group consisting of polyoxyalkylene-functional organic groups, alkyl groups having at least 12 carbon atoms, and polydialkylsiloxane chain-containing organic groups, and (F2) at least 1 perfluoroalkyl-functional organic group with the general formula --R.sup.2 --X--R.sup.1 --(CF.sub.2).sub.a F wherein R.sup.1 represents C.sub.1 to C.sub.10 divalent hydrocarbon groups, R.sup.2 represents C.sup.1 to C.sub.20 divalent hydrocarbon groups, X is a group with the formula --CO-- or --COO--, and a is an integer with a value of at least 3.

Inventors: Kobayashi; Hideki (Chiba Prefecture, JP), Masatomi; Toru (Chiba Prefecture, JP)

Assignee: Dow Corning Toray Silicone Company, Ltd.

International Classification: C08G 77/24 (20060101); C08G 77/00 (20060101); C08L 83/08 (20060101); C08L 83/00 (20060101); C08G 077/24 (); C08G 077/14 ()

Expiration Date: 06/26/2018