Claims
- 1. A method for preparing a polymer containing a cyclopentadiene terminal group which comprises reacting a material selected from the group consisting of isobutylene, styrene and .alpha.-methylstyrene with an initiator consisting of tertiary, allylic or benzylic halide of the formula RX, wherein R is selected from the group consisting of alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkaryl or aryl, and X represents chlorine, bromine or iodine, and R.sub.x 'Al(CPD).sub.y wherein CPD represents the cyclopentadiene group, R' represents an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkaryl or aryl group, y equals 1 to 2 and x equals 2 to 1 and the sum of x plus y is equal to 3.
- 2. A method according to claim 1 in which the RX/R.sub.x 'Al(CPD).sub.y mole ratio ranges from 0.1/1 to 5.0/1.
- 3. A method according to claim 2 in which RX is tertiary butyl chloride and R.sub.x 'Al(CPD).sub.y is dimethyl aluminum cyclopentadiene or dimethyl(cyclopentadienyl)aluminum.
- 4. A method according to claim 3 in which the monomer is isobutylene.
Parent Case Info
This is a divisional application of Ser. No. 770,436, filed Feb. 22, 1977, now U.S. Pat. No. 4,138,441.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1163339 |
Sep 1969 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
770436 |
Feb 1977 |
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