Stabilization of flame retardant premix for polyurethane

Details Stabilization of flame retardant premix for polyurethane Stabilization of flame retardant premix for polyurethane

1978-07-03

1980-09-30

Padgett, Benjamin R.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

252 81, 260 18TN, 521118, 521121, 521129, C08G 188, B01J 2702, C08J 902

Patent

active

042254531

ABSTRACT:
The storage stability of otherwise unstable premix compositions for flame retardant rigid polyurethane foams containing in the premix a chlorinated polyether polyol and a tertiary amine catalyst, is enhanced by incorporation into the premix a synergistic combination of an organic sulfur compound and an unsaturated carbon compound. The preferred sulfur compound is thiourea; among the preferred unsaturated carbon compounds are unsaturated terpenes such as allo-ocimene and unsaturated higher fatty acids such as tall oil fatty acids and mono-, di-, and trienic C.sub.18 acids.

REFERENCES:
patent: 3095386 (1963-06-01), Hudson
patent: 3211674 (1965-10-01), Sandridge
patent: 3248348 (1966-04-01), Picchola et al.
patent: 3884849 (1975-05-01), Molbart
patent: 3978011 (1976-08-01), Molbert
patent: 3980579 (1976-09-01), Syrop et al.
patent: 4018724 (1977-04-01), Cobbledick
patent: 4020024 (1977-04-01), Walraevens

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