Patent ID: 6214930
Filing Date: 2001-04-10
Classification: C08G,C08L,Y10S

Abstract:
A process for preparing a one-package room temperature curable organopolysiloxane composition having improved slump properties, comprising(A) 100 parts by weight of an organopolysiloxane having 1 to 5 branched structures represented by RSiO.sub.3/2, in which R is a substituted or unsubstituted monovalent hydrocarbon group, in a molecule, containing at least two Si--OH groups or hydrolyzable groups in a molecules and having a viscosity of at least 100 centistokes at 25.degree. C.,(B) 1 to 20 parts by weight of an organosilane having at least two hydrolyzable groups selected from alkenoxy or alkoxy groups in a molecule or a partial hydrolyzate thereof, and(C) 2 to 200 parts by weight of an inorganic filler, said process comprising the steps of premixing components (A) and (B) in a substantially anhydrous state, and adding component (C) to the premix.