US 6,982,300 B2
Method for preparing a pressure sensitive adhesive formulation including an enhanced polyisobutylene modifier
Betty L. Gipson, League City, Tex. (US)
Assigned to Texas Petrochemicals LP, Houston, Tex. (US)
Filed on Jul. 19, 2004, as Appl. No. 10/893,827.
Application 10/893827 is a division of application No. 10/357591, filed on Feb. 04, 2003, granted, now 6,815,504.
Prior Publication US 2004/0266936 A1, Dec. 30, 2004
This patent is subject to a terminal disclaimer.
Int. Cl. B65C 9/25 (2006.01); C08F 8/00 (2006.01); C08J 5/00 (2006.01); C09J 101/00 (2006.01); C09L 9/00 (2006.01)
U.S. Cl. 525—191 35 Claims
 
1. A method for preparing a pressure sensitive adhesive having improved properties comprising providing a pressure sensitive adhesive base structure and including in said base structure a PIB modifier, said PIB modifier comprising a homopolymer of isobutylene wherein a predominant portion of the double bonds are in either an alpha position or a beta position.