| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain the subject organopolysiloxane that is readily peelable, curable with radioactive rays having high residual adhesion and is useful as a back face-treating agent for an adhesive tape and as a main agent for coating the release paper for pressure sensitive adhesive labels. SOLUTION: The objective organopolysiloxane is obtained by adding reaction between (A) an organopolysiloxane bearing an acrylic functional group and (B) an organopolysiloxane bearing hydride groups on both chain ends so that they may be partially crosslinked. In a preferred embodiment, the component A is represented by the average composition formula: AxR1SiO(4-x-y)/2 [A is -R2OCOR3=CH2 or the like (R2 is a 1-10C alkylene; R3 is H, methyl); R1 is a 1-10C monovalent hydrocarbon; x is 0.002-1.50; y is 0-3.0; 1.5<=x+y<=2.5]. The component B is represented by the average composition formula: H (R2 SiO2)nSiR2H (R is a 1-10C monovalent hydrocarbon; n is a positive integer).</p> |
