Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1988-11-28
1990-03-06
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
524722, 524724, 524755, 524759, 524760, 524761, 524762, 528 76, 528 77, 528 78, 528 80, 528 81, 528 82, C08G 1828
Patent
active
049067230
ABSTRACT:
A method is described for producing dispersions of polyurea and the like in polyols of increased stability by polymerizing an amine and an isocyanate in the presence of an aminoalcohol, typically an aminopolyol, having the following formula: ##STR1## wherein A and A' are individually connective atoms which may be same or different, and are selected from the group consisting of carbon and oxygen or combinations thereof with hydrogen atoms or the like satisfying the valences; B is a member selected from the group consisting of nitrogen, NR, R being alkyl or aryl, or CR', R' being hydrogen, alkyl or aryl; D is a member selected from the group consisting of ##STR2## wherein a has a value of one to four; X is a member selected from the group consisting of OH, NH.sub.2 or H; X' is a member selected from the group consisting of H or NHR' where R' is hydrogen, alkyl or aryl; n and d are individually integers of 0 to 10 and the sum of n and d is at least one and does not exceed 10; s is either 0 or 1; y is an integer of 0 to 4; and m is an integer of at least about 16, with the proviso that when B is nitrogen and either n or d is zero, X and X' are not both H. The dispersions are useful for the production of polyurethane foams.
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Hoy Kenneth L.
Lee Chinsoo
Taylor Glenn A.
Deppenbrock Bonnie L.
Sergent Rabon
Union Carbide Chemicals and Plastics Company Inc.
Welsh Maurice J.
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