公开(公告)号：US20170298172A1

公开(公告)日：2017-10-19

申请号：US15516914

申请日：2015-10-05

申请人： SHELL OIL COMPANY

发明人： Pranaya Man Singh PRADHAN ,  Mohandoss VRISHABADOSS ,  Arvind KUMAR ,  Prem Kumar DHANAPAL

IPC分类号： C08G18/48 ,  C08G18/18 ,  C08G18/76

CPC分类号： C08G18/4804 ,  C08G18/1808 ,  C08G18/1833 ,  C08G18/2063 ,  C08G18/3275 ,  C08G18/4816 ,  C08G18/4829 ,  C08G18/632 ,  C08G18/6688 ,  C08G18/7621

摘要： A process for making a polyurethane foam, comprising combining, at an isocyanate index of at most 120: (a) a polyol component comprising (i) from 10 to 70 parts by weight of a first polyol having a number average molecular weight of 2000 to 12000 Dalton, and a functionality of 2 to 6; and (ii) from 90 to 30 parts by weight of a second polyol having a number average molecular weight of 300 to 1500 Dalton, a functionality of 2 to 6, and a hydroxyl value of 100 to 600 mg KOH/g; (b) an amine catalyst consisting of: (i) from 0.2 to 0.6 pphp of triethylenediamine, and optionally from 0.05 to 0.20 pphp bis(dimethylaminoethyl)ether; or (ii) an amount of one or more tertiary amines having a catalytic gelling and/or blowing activity equivalent to (i); and (c) foam-forming reactants comprising an aromatic polyisocyanate, to obtain the foam.