	US 12,460,040 B2
	Isocyanate-based polymer foam having improved flame retardant properties
Herbert Schmidt, Richmond Hill (CA); George Ng, Markham (CA); Le Tang, Richmond Hill (CA); Petar Pepic, Toronto (CA); and Dorota Ulman, Mississauga (CA)
Assigned to PROPRIETECT L.P., Toronto (CA)
Appl. No. 14/647,312
Filed by PROPRIETECT L.P., Toronto (CA)
PCT Filed Nov. 26, 2013, PCT No. PCT/CA2013/000980 § 371(c)(1), (2) Date May 26, 2015, PCT Pub. No. WO2014/078943, PCT Pub. Date May 30, 2014.
Claims priority of provisional application 61/796,956, filed on Nov. 26, 2012.
Prior Publication US 2015/0322194 A1, Nov. 12, 2015
Int. Cl. C08G 18/06 (2006.01); C08J 9/00 (2006.01); C08J 9/38 (2006.01); C08K 3/02 (2006.01); C08K 3/04 (2006.01); C09K 21/04 (2006.01); C08G 101/00 (2006.01)

CPC C08G 18/06 (2013.01) [C08J 9/0066 (2013.01); C08J 9/38 (2013.01); C08K 3/02 (2013.01); C08K 3/04 (2013.01); C09K 21/04 (2013.01); C08G 2101/00 (2013.01); C08J 2201/022 (2013.01); C08J 2205/05 (2013.01); C08J 2205/06 (2013.01); C08J 2205/08 (2013.01); C08J 2375/02 (2013.01); C08J 2375/04 (2013.01); C08K 2003/026 (2013.01)]

35 Claims

1. A polyurethane foam produced from a reaction mixture comprising:

(i) at least one isocyanate;

(ii) a mixture of polyols comprising: (a) an aromatic polyester polyol, and (b) at least one additional polyol other than the aromatic polyester polyol;

(iii) red phosphorus in an amount in the range of from about 18 to about 25 parts by weight per 100 parts by weight of component (ii);

(iv) expandable graphite in an amount in the range of from about 15 to about 20 parts by weight per 100 parts by weight of component (ii); and

(v) a blowing agent consisting essentially of water.