| 摘要 |
A primer composition for protecting polysiloxane polymers from alkali material comprising 1.0-10.0 percent by weight of (RO)nSiO(4-n/2; 15.0-40.0 percent by weight of (R'O)4 Si; 1.0-10.0% by weight of Ti(OR2)4 or Ti(OR2)x; 1.0-5.0 percent by weight of AND 35-72 PERCENT BY WEIGHT OF A SOLVENT WHEREIN R, R', R2, R3, R4, and R5 are monovalent hydrocarbon radicals, x is at least 5 and the value of n may vary from 2.25 to 2.67.
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