Dispersibility improver for fluororesin powders, and organic resin compositions

摘要

The invention pertains to a polydiorganosiloxane dispersibility improver for fluororesin powders that contains in the pendant position(A) an organic group selected from the set consisting of polyoxyalkylene-functional organic groups, alkyl groups having at least 12 carbon atoms, and polydialkylsiloxane chain-containing organic groups,and contains in the pendant position or the molecular chain terminal position,(B) a perfluoroalkyl-functional organic group with the general formula F(CF2)a-R1- in which R1 is alkylene or alkyleneoxyalkylene and a is an integer with a value of at least 3.The polydiorganosiloxane dispersibility improver for fluororesin powders has the ability to induce the uniform dispersion of fluororesin powders in organic resins. As a consequence the organic resin compositions have the ability to form uniform and transparent coatings that have an excellent surface lubricity.