US 12,275,869 B2
High strength long open time polyurethane reactive hot melt
Yingjie Li, Elgin, IL (US); Shuhui Qin, Elgin, IL (US); and Jeanne Li, Elgin, IL (US)
Assigned to Henkel AG & Co. KGaA, Duesseldorf (DE)
Filed by Henkel AG & Co. KGaA, Duesseldorf (DE)
Filed on Mar. 13, 2020, as Appl. No. 16/817,850.
Application 16/817,850 is a continuation of application No. PCT/US2018/052121, filed on Sep. 21, 2018.
Claims priority of provisional application 62/561,786, filed on Sep. 22, 2017.
Prior Publication US 2020/0216730 A1, Jul. 9, 2020
Int. Cl. C09J 175/08 (2006.01); C08G 18/40 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01); C08G 18/62 (2006.01); C08G 18/76 (2006.01); C09J 5/00 (2006.01); C08K 3/26 (2006.01)
CPC C09J 175/08 (2013.01) [C08G 18/4018 (2013.01); C08G 18/4063 (2013.01); C08G 18/4238 (2013.01); C08G 18/4277 (2013.01); C08G 18/4808 (2013.01); C08G 18/4825 (2013.01); C08G 18/6225 (2013.01); C08G 18/6229 (2013.01); C08G 18/7671 (2013.01); C09J 5/00 (2013.01); C08G 2170/20 (2013.01); C08K 2003/265 (2013.01); C09J 2475/00 (2013.01)] 20 Claims
 
1. A moisture reactive hot melt adhesive composition that is the product of a mixture comprising a polyisocyanate, at least one polyether polyol polymer, an acrylic polymer, from about 10 to about 50% by weight of an inorganic filler, and a having a structure of Formula 2, wherein:
HO-[(CH2)5COO]p-R1-[OOC(CH2)5]q-OH, wherein:
R1 is an initiator;
p is an integer from 0 to 96;
q is an integer from 0 to 96;
p+q=16 to 96; and
the polycaprolactone polyol of Formula 2 has a number average molecular weight of from about 2,000 to about 11,000; and
the acrylic polymer is free of active hydrogen groups.