US 11,945,977 B2
Styrene-based materials for hot melt adhesives
Steven D. Gray, Mequon, WI (US); Darius K. Deak, Haverhill, MA (US); Brian R. Minix, Wauwatosa, WI (US); and Edward P. Tomlinson, Brookfield, WI (US)
Assigned to Bostik, Inc., Wauwatosa, WI (US)
Appl. No. 16/486,880
Filed by BOSTIK, INC., Wauwatosa, WI (US)
PCT Filed Feb. 20, 2018, PCT No. PCT/US2018/018826
§ 371(c)(1), (2) Date Aug. 19, 2019,
PCT Pub. No. WO2018/152531, PCT Pub. Date Aug. 23, 2018.
Claims priority of provisional application 62/461,052, filed on Feb. 20, 2017.
Prior Publication US 2020/0010743 A1, Jan. 9, 2020
Int. Cl. C09J 153/02 (2006.01); C08K 3/34 (2006.01); C08K 3/36 (2006.01); C08K 5/00 (2006.01); C08L 25/06 (2006.01); C09J 11/06 (2006.01); C09J 125/06 (2006.01)
CPC C09J 153/02 (2013.01) [C08L 25/06 (2013.01); C09J 11/06 (2013.01); C08K 3/346 (2013.01); C08K 3/36 (2013.01); C08K 5/0083 (2013.01); C08L 2666/06 (2013.01); C09J 125/06 (2013.01)] 11 Claims
 
1. A hot melt adhesive composition comprising:
a) about 2% to about 98% by weight of at least one polymer selected from the group consisting of polystyrene, polybutene, polyisobutene, linear low density polyethylene, polypropylene random copolymer, polypropylene, olefin block copolymer, polyolefins, styrene block copolymers, and ethyl vinyl acetate polymers;
b) 0% to about 80% by weight of a tackifying resin; and
c) about 2% to about 98% by weight of at least one precisely end-capped polystyrene (PECPS) having a formula of:

OG Complex Work Unit Chemistry
produced by the reaction below

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wherein n is from 2 to 20, and R is selected from the group consisting of:

OG Complex Work Unit Chemistry