US 6,297,303 B1 · Dispersibility improver for fluororesin powders, and organic resin compositions

Abstract

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.

Claims14

Dependent claims

A polydiorganosiloxane dispersibility improver having the average formula:

wherein R denotes substituted or unsubstituted monovalent hydrocarbon groups;
B is the 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;
D is an organic group selected from alkyl groups having at least 12 carbon atoms and polydialkylsiloxane chain-containing organic groups;
E is a group selected from R, B, and D;
x is a number with a value from 0 to 500, y is a number from 1 to 500, z is a number from 1 to 500, and (x+y+z) falls in the range from 2 to 1500.

2 more elements

Dependencies are inferred from the claim text.

Dispersibility improver for fluororesin powders, and organic resin compositions

Life of this patent

Dispersibility improver for fluororesin powders, and organic resin compositions

Life of this patent

Abstract

Claims14