Process for preparing polyurea and polyurea/polyurethane polymer

Details Process for preparing polyurea and polyurea/polyurethane polymer Process for preparing polyurea and polyurea/polyurethane polymer

1987-03-19

1989-07-18

Kight, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

528 68, 528 76, 528 77, C08G 1814

Patent

active

048494607

ABSTRACT:
The invention relates to a process for producing a polyurea or polyurea/polyurethane compound by reaction of an organic polyisocyanate with a diamine chain extender and an isocyanate-reactive polymer, the latter consisting at least in part, in a polymeric polyamine havng a molecular weight of from 1000 to 16000, containing from 2 to 4 primary amino groups per molecule, and being the condensation product of a polycarboxylic acid or ester with a stoichiometric excess of a polyamine having terminal propoxy groups and a molecular weight of from 500 to 5000.

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patent: 3306875 (1967-02-01), Hay
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patent: 4433067 (1984-02-01), Rice et al.
patent: 4448904 (1984-05-01), Dominguez
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patent: 4530941 (1985-07-01), Turner et al.
patent: 4585850 (1986-04-01), Dominguez
patent: 4607090 (1986-08-01), Dominguez
patent: 4631298 (1986-12-01), Presswood
patent: 4751255 (1988-06-01), Bentley et al.
Encyclopedia of Polymer Science & Technology, vol. 6, pp. 164-165.
Encyclopedia of Polymer Science & Tech., vol. 15, pp. 459-460.

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