| 摘要 |
<p>Polymers are described that are prepared from di and mono-functional sili cone and silane monomers of Formula 1 in which Y represents a direct bond or a oxy group; R1represents an optionally substituted organo group with at le ast one double bond which optionally may be an activated unsaturated moiety such as a (meth) acrylate group: for example 1-n-propoxy(acrylate) or etheny l; and R2 and R3 each separately, and independently within each optional rep eat unit, represent an optionally substituted hydrocarbo, hydrocarbo(oxy), h ydrosilico and/or hydrosilico(oxy) groups; or example, methyl; or trimethyls iloxy; R4 independently represents an optionally subsitituted organo group w ith at least one double bond (such as R1 above) an optionally subsitituted h ydrocarbo, and/or hydrosilico group for example trimethylsilyl or ethenyl; a nd n is from about 0 to about 2000; preferably from about 1 to about 100, fo r example n is 1. Such polymer precursors can be used to prepare flow modify ing agents, defoamers and/or pressure sensitive adhesives.</p> |
