US 9,809,674 B2
High functional polyester polyols
David J. Shieh, Sugarland, TX (US)
Assigned to HUNTSMAN INTERNATIONAL LLC, The Woodlands, TX (US)
Appl. No. 14/391,013
Filed by Huntsman International LLC, The Woodlands, TX (US)
PCT Filed Apr. 2, 2013, PCT No. PCT/US2013/035017
§ 371(c)(1), (2) Date Oct. 7, 2014,
PCT Pub. No. WO2013/154874, PCT Pub. Date Oct. 17, 2013.
Claims priority of provisional application 61/622,293, filed on Apr. 10, 2012.
Prior Publication US 2015/0051304 A1, Feb. 19, 2015
Int. Cl. C08G 18/42 (2006.01); C08J 9/14 (2006.01); C08G 18/48 (2006.01); C08G 18/66 (2006.01); C08G 18/38 (2006.01); C08G 18/40 (2006.01); C08G 63/12 (2006.01); C08G 18/08 (2006.01); C08G 18/72 (2006.01); C08G 63/183 (2006.01); C08G 63/91 (2006.01); C08G 101/00 (2006.01)
CPC C08G 18/4219 (2013.01) [C08G 18/14 (2013.01); C08G 18/381 (2013.01); C08G 18/4018 (2013.01); C08G 18/4208 (2013.01); C08G 18/4288 (2013.01); C08G 18/4829 (2013.01); C08G 18/6633 (2013.01); C08G 18/72 (2013.01); C08G 63/12 (2013.01); C08G 63/183 (2013.01); C08G 63/916 (2013.01); C08J 9/143 (2013.01); C08G 2101/00 (2013.01); C08G 2101/005 (2013.01); C08J 2201/022 (2013.01); C08J 2375/08 (2013.01); Y02P 20/127 (2015.11)] 13 Claims
 
1. An aromatic polyester polyol, suitable as the sole polyol in the production of polyurethane foams that have an E-84 tunnel fire test class one rating, said aromatic polyester polyol having a functionality range from 2.8 to 3.2 and a moderate viscosity ranging from 4,000-10,000 cps @ 25° C. inclusive, wherein said polyol is prepared by the transesterification or esterification of a mixture comprising:
46.9-66% w/w of a glycol,
24-34% w/w of a terephthalate source,
5.02-17% w/w glycerin,
0-14% w/w pentaerythritol,
0-5% w/w methyl glucoside,
0-10% w/w sorbitol,
0-15% w/w of a natural vegetable oil, modified natural vegetable oil or fatty acid derivative of vegetable oil.