| 摘要 |
<p>PURPOSE: Provided are a silicone composition suitable for providing a paper substrate with water repellency and oil repellency, and a paper treatment agent comprising the composition. CONSTITUTION: The composition comprises 100 parts by weight of an organopolysiloxane, 50 to 1,000 parts by weight of a polyvinyl alcohol homopolymer or copolymer, 100 to 100,000 parts by weight of water, and 0.1 to 100 parts by weight of a surfactant, wherein the organopolysiloxane is represented by the following formula 1. In the formula 1, each R¬1 may be same or different and is a group having 1 to 20 carbon atoms selected from the group consisting of alkyl groups, alicyclic groups, and aryl groups, whose hydrogen atoms bonded to the carbon atoms may partly be replaced with a halogen atom or a cyano group, and X¬1 is the group represented by the following formula 2, wherein a1, b1 and d1 are such numbers that the organopolysiloxane has a viscosity at 25 deg.C of from 0.05 to 500 Pa·s, and b1 and d1 may be zero.</p> |
