| 摘要 |
<p>1515958 Siloxanes or polymers thereof UNION CARBIDE CORP 29 June 1976 [30 June 1975] 27044/76 Headings C3S and C3T Sulpholanyloxyalkylheptoalkylcyclotetrasiloxanes have the general formula and may be polymerized to polymers of the average empirical formula R<1> is C2-8 alkylene; R is C1-10 alkyl; R<1> to R<4> are independently H or C1-4 alkyl; n is 10 to 200 and the average value of d : q is 3 : 1. They may also be polymerized in the presence of other reactants, e.g. to obtain the products described and claimed in Specifications 1,515,956 and 1,515,957.</p> |
