Patent ID: 6316654
Filing Date: 2001-11-13
Classification: B01J,C07C,C07F,Y02P

Abstract:
An improved catalyzed esterification or transesterification reaction or a urethane, urea, silicone, or amino forming reaction process involving reactants and forming reaction products that are in a non-solid phase under reaction conditions, wherein the improvement comprises utilizing as the catalyst, the solid heterogeneous organotin silane catalyst comprising the reaction product of:(a) a solid support containing a metal oxide with surface hydroxy groups, and(b) one or more organotin silanes of the formula ##STR13##wherein:each R.sup.1 is independently selected from the group consisting of F, Cl, Br, I, OR, R, where R is substituted or unsubstituted C.sub.1 to C.sub.18 alkyl, C.sub.5 to C.sub.12 cycloalkyl, or aryl, provided at least one value of R.sup.1 is selected from among F, Cl, Br, I, and OR;each R.sup.2 is independently selected from R.sup.1, benzyl, vinyl, allyl, hydride, or and OR; where R is alkyl or ##STR14##provided at least one value of R.sup.2 is F, Cl, Br, I, or OR R.sup.3 is (CH.sub.2).sub.m, aryl or cycloalkyl,m=0 to 17, n=1 to 18, sum of n plus m=1 to 18 except when R.sup.3 is aryl or cycloalkyl then n=at least 2,except, when R.sup.3 =(CH.sub.2).sub.m, the sum of n plus m=2,4,5 or 6, all values of R.sup.1 are R with R being aryl or C.sub.1 to C.sub.12 alkyl, one value of R.sup.2 is Cl aryl or hydride;then, all remaining values for R.sup.2 cannot be selected from C.sub.1 to C.sub.12 alkyl, C.sub.7 to C.sub.18 cycloalkyl or aryl; andexcept also, when R.sup.3 =(CH.sub.2).sub.m, the sum of n plus m=4, all values of R.sup.1 are Cl, and two values for R.sup.2 are Cl then the remaining value for R.sup.2 cannot be butyl.