Claims
- 1. A method for obtaining anionic polymerization, a vinylsilyl group-containing polymeric compound having a substantially monodisperse molecular weight distribution represented by the recurring structural units of the formula ##STR2## in which n is an integer of 0, 1, 2 or 3, R is a monovalent hydrocarbon group selected from the glass consisting of alkyl groups having from 1 to 4 carbon atoms and phenyl group and p is a positive integer corresponding to the degree of polymerization of the polymer and is phenylene which comprises polymerizing a vinylsilyl group containing styrene compound represented by the general formula
- CH.sub.2 .dbd.CH--C.sub.6 H.sub.4 --CH.sub.2).sub.n SiR.sub.2 --CH.dbd.CH.sub.2,
- in which R is a monovalent hydrocarbon group selected from the class consisting of alkyl groups having from 1 to 4 carbon atoms and phenyl group and n is an integer of 0, 1, 2 or 3, under such conditions that the polymerization takes place by anionic living polymerization solely of the vinyl group directly bonded to the phenylene group --C.sub.6 H.sub.4 -- leaving the vinyl group bonded to the silicon atom unpolymerized.
- 2. A vinylsilyl group-containing polymeric compound represented by the recurring structural units of the formula ##STR3## in which n is an integer of 0, 1, 2 or 3, R is a monovalent hydrocarbon group selected from the class consisting of alkyl groups having from 1 to 4 carbon atoms and phenyl group and p is a positive integer corresponding to the degree of polymerization of the polymer and is phenylene said polymeric compound having a monodispersed distribution of the molecular weight such that the ratio of Mw/Mn is 1.04 or less.
- 3. The method as claimed in claim 1 wherein the polymerization is performed in a solvent which is 2-methyltetrahydrofuran or a dialkyl ether in the presence of cumyl cesium at a temperature of -50.degree. C. or below.
Priority Claims (1)
Number |
Date |
Country |
Kind |
58-198928 |
Oct 1983 |
JPX |
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Parent Case Info
This is a continuation of application Ser. No. 660,718, filed Oct. 15, 1984, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4124751 |
Fischer et al. |
Nov 1978 |
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4252925 |
Fukudo et al. |
Feb 1981 |
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4301231 |
Atarashi et al. |
Nov 1981 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
660718 |
Oct 1984 |
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