| abstract |
FIELD: glueing materials. SUBSTANCE: composition has, mas. p.: polyphenylsilsesquioxane diorganosiloxane block-copolymer 100 and catalyst for cold hardening of organosilicon polymers 4-10. Block-copolymer is prepared by cohydrolysis of phenyltrichlorosilane and oligoorganosiloxane with terminal hydroxyl- or chloro-containing groups. Permeability of 1-st component for diaphragm made of cellulose acetate (catalyst ) is, l/m 2 ·h·atm : by He - for initial diaphragm 120, after glueing 120; by N 2 - for initial diaphragm 0.34, after glueing 0.34; by He-αHe-N 2 - for initial diaphragm 12, after glueing 12. Composition is used for glueing of diaphragms made of polyvinyltrimethylsilane, polydimethylsiloxane, poly-4-methylpentene-1, cellulose acetate and other polymers. EFFECT: enhanced quality of composition. 2 tbl |