	US 7,405,262 B2
	Preparation of functionalized anionic polymerization initiators
Thomas Antkowiak, Rittman, Ohio (US); Christine Rademacher, Akron, Ohio (US); Anthony Ramic, Parma, Ohio (US); and David F. Lawson, Uniontown, Ohio (US)
Assigned to Bridgestone Corporation, Chuo-ku, Tokyo (Japan)
Appl. No. 10/520,989 PCT Filed Jul. 11, 2003, PCT No. PCT/US03/21871 § 371(c)(1), (2), (4) Date Jan. 10, 2005, PCT Pub. No. WO2004/007563, PCT Pub. Date Jan. 22, 2004.
Claims priority of provisional application 60/395085, filed on Jul. 11, 2002.
Prior Publication US 2006/0036050 A1, Feb. 16, 2006
Int. Cl. C08F 4/46 (2006.01); C07F 1/02 (2006.01); C08F 236/10 (2006.01)

U.S. Cl. 526—173 [526/176; 526/178; 526/179; 526/180; 526/181; 502/155; 502/157; 260/665 R; 544/106; 544/358; 546/152; 548/578; 556/87; 556/465; 564/336; 568/17; 568/38; 568/77; 562/899]

22 Claims

1. A process for preparing a functionalized anionic polymerization initiator, the process comprising:

combining a functionalized styryl compound and an organolithium compound, where the functionalized styryl compound is defined by the formula X

where each R¹is independently hydrogen or a hydrocarbyl group, R²is hydrogen or a hydrocarbyl group, R³is hydrogen or a hydrocarbyl group, each R⁴is independently hydrogen or a monovalent organic group, R⁶is a covalent bond or a hydrocarbylene group, and A is a functional group.