Patent ID: 6723827
Filing Date: 2004-04-20
Classification: C08G,C08L

Abstract:
A process for forming a polythioether comprising: wherein R1 is a C1-10 alkyl, â€”(R3Q)pR3â€” or C6-C20 aryl where Q is O or S, each R3 is independently C1-6 alkyl, and p is an integer between 0 and 6; R2 is C1-6 alkyloxy or C5-12 cycloalkyloxy, R4 is H, C1-6 alkyl, C1-6 alkyl alcohol and C0-6 alkyl substituted with where X is a halogen, m is an integer between 1 and 4, and n is an integer selected to yield a molecular weight for said polythioether of between 1000 and 10,000 Daltons comprising the step of: reacting a polythiol and a polyhalide in the presence of an aqueous base.