| abstract |
An isocyanate trimer having the silane structure or modified by the functional polysilocane represented by the following formula and their preparation methods, in which R is the group such as tolyl, ethylphenyl, 1,5-naphthyl, diphenylmethyl, hexamethyl, isophorone, 2,2,6-tirmethylcyclohexyl, 4,4'-biscyclohexylmethane which substituted by di-isocyanate; R1 is the saturated or unsaturated, linear or branched alkyl, cyclic group, aryl etc., its main carbon atom is 1-8, and may be the homologue of aromatic hydrocarbon, R2 and R3 each is C1~C6alkyl, aryl, trialkylsilanyl, methoxylalkoxyl, a is a positive integer from 0 to 3, R1,R2,R3,R4 or R5 each is saturated or unsaturated, linear or branched alkyl, cycloalkyl, aryl, alkoxyl, cycloalkoxyl etc., which the amount of carbon atoms is 1~12, X mainly represents -NH-, -NHCH2CH2NH-, -NHCH2CH2NHCH2CH2NH-, -N-, -NHCONH-, , -S-, -O-, n is a positive integer which ≥0. |