US 6,982,309 B2
Synthesis of branched styrenic copolymers with p-t-butylstyrene
Jose M. Sosa, Deer Park, Tex. (US); and Kenneth P. Blackmon, Houston, Tex. (US)
Assigned to Fina Technology, Inc., Houston, Tex. (US)
Filed on Dec. 19, 2003, as Appl. No. 10/742,163.
Prior Publication US 2005/0137373 A1, Jun. 23, 2005
Int. Cl. C08F 212/12 (2006.01)
U.S. Cl. 526—347 19 Claims
 
1. A method for producing an improved copolymerized product comprising:
polymerizing at least one vinylaromatic monomer in the presence of
at least one peroxy initiator; and
p-t-butyl styrene (TBS); and
recovering a copolymerized product.