FUNCTIONALIZED HYDROXYSILANES, SILYLATED POLYURETHANES, AND COMPOSITIONS COMPRISING SAME
The present invention relates to a compound of formula (I): and also to the process for preparing same, and to the uses thereof. The present invention also relates to the polyurethanes obtained from the compounds of formula (I), and also to the uses of said polyurethanes.
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(2022/01/08)
Process for making a silylisocyanurate
This invention provides a process for making a silylorganocarbamate or a silylisocyanurate which process comprises reacting an aminosilane with a dialkyl carbonate, diaryl carbonate or a mixture thereof in the presence of a basic catalyst to obtain the silylorganocarbamate; optionally, neutralizing the basic catalyst and residual aminosilane with a neutralizing agent; and adding a cracking catalyst and heating at subatmospheric pressure to obtain the silylisocyanurate; or heating a silylorganocarbamate at a temperature sufficient for dissociation of the carbamate at subatmospheric pressure in the presence of a cracking catalyst and a timerization catalyst to obtain a silylisocyanurate.
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(2008/06/13)
Organosilane esters having glycol ether moieties
The present invention relates to new organosilane esters which can be characterized by the formula Y-(CH2)n Si(CH3)p -Xm Z3-(m+p). In this formula, Y represents either a substituted or unsubstituted amino group, or it represents the mercapto moiety or the moiety STR1 X represents an alkoxy group with 1 to 4 carbon atoms and Z a glycol ether moiety. The index n can assume the numerical values from 1 to 3, m can be 0 or 1 and p can be 0 or 1 or 2, on the condition that m+p is equal to or less than 2. The new silanes yield very stable hydrolyzates and have good adhesion-improving properties. They are therefore particularly well suited for use in sealing compositions.