	US 12,269,976 B2
	Flame resistant hotmelt adhesive
Joaquim Serra, Oporto (PT)
Assigned to H.B. Fuller Company, St. Paul, MN (US)
Appl. No. 17/252,161
Filed by H.B. Fuller Company, St. Paul, MN (US)
PCT Filed Jun. 13, 2019, PCT No. PCT/US2019/036901 § 371(c)(1), (2) Date Dec. 14, 2020, PCT Pub. No. WO2019/241473, PCT Pub. Date Dec. 19, 2019.
Claims priority of provisional application 62/684,968, filed on Jun. 14, 2018.
Prior Publication US 2021/0284872 A1, Sep. 16, 2021
Int. Cl. C09J 7/35 (2018.01); A47L 15/42 (2006.01); B05D 3/00 (2006.01); C08G 18/24 (2006.01); C08G 18/36 (2006.01); C08G 18/48 (2006.01); C08G 18/66 (2006.01); C08G 18/76 (2006.01); C08K 3/26 (2006.01); C08K 3/30 (2006.01); C08K 3/32 (2006.01); C08K 5/01 (2006.01); C08K 5/3435 (2006.01); C08K 5/5357 (2006.01); C08K 9/04 (2006.01); C08L 23/12 (2006.01); C08L 23/16 (2006.01); C08L 23/26 (2006.01); C08L 51/06 (2006.01); C08L 91/06 (2006.01); C09D 175/08 (2006.01); D06F 37/20 (2006.01); D06F 49/06 (2006.01)

CPC C09J 7/35 (2018.01) [A47L 15/4251 (2013.01); B05D 3/007 (2013.01); C08G 18/242 (2013.01); C08G 18/36 (2013.01); C08G 18/4845 (2013.01); C08G 18/6696 (2013.01); C08G 18/7671 (2013.01); C08K 3/26 (2013.01); C08K 3/30 (2013.01); C08K 3/32 (2013.01); C08K 5/01 (2013.01); C08K 5/3435 (2013.01); C08K 5/5357 (2013.01); C08K 9/04 (2013.01); C08L 23/12 (2013.01); C08L 23/16 (2013.01); C08L 23/26 (2013.01); C08L 51/06 (2013.01); C08L 91/06 (2013.01); C09D 175/08 (2013.01); D06F 37/20 (2013.01); D06F 49/06 (2013.01); C08K 2003/265 (2013.01); C08K 2003/3045 (2013.01); C08K 2003/323 (2013.01); C08L 2201/02 (2013.01); C08L 2201/08 (2013.01); C08L 2205/02 (2013.01); C08L 2205/035 (2013.01); C08L 2314/06 (2013.01); C09J 2301/304 (2020.08); C09J 2301/312 (2020.08); C09J 2301/408 (2020.08); C09J 2301/414 (2020.08); C09J 2423/10 (2013.01); C09J 2423/16 (2013.01)]

20 Claims

1. A hotmelt adhesive composition comprising, based on the total weight of the composition:

from 15% to 45% by weight at least one tackifying resin;

from 20% to less than 60% by weight a mixture of at least one single-site catalyzed propylene homopolymer (A) and at least one propylene copolymer (B); and

at least one of the following two components:

a particulate phosphorous based compound in an amount from 15% to 40% by weight, and

a room temperature liquid phosphorous based compound in an amount from four % to 15% by weight,

wherein the propylene homopolymer (A) has a weight average molecular weight from 20,000 to 145,000, the propylene copolymer (B) has an ethylene comonomer content in an amount from five % to 25% by weight, and the weight ratio of propylene homopolymer (A) to propylene copolymer (B) is from 1:3 to 3:1.