Method of preparing foam using a partially fluorinated alkane ha

Details Method of preparing foam using a partially fluorinated alkane ha Method of preparing foam using a partially fluorinated alkane ha

1990-06-29

1992-07-14

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 98, 521155, 521163, 521170, C08J 914, C08G 1800, C08G 1806

Patent

active

051303450

ABSTRACT:
A method for preparing polyurethane and polyisocyanurate foams which comprises reacting and foaming a mixture of ingredients which will react to form the polyurethane or polyisocyanurate foams in the presence of a blowing agent comprising a partially fluorinated alkane having four or five carbon atoms and a tertiary structure. The method is advantageous because partially fluorinated alkanes having a tertiary structure have zero ozone depletion potentials, are nonflammable, and have higher solvency toward polyols.

REFERENCES:
patent: 3183192 (1965-05-01), Bauer
patent: 4076644 (1978-02-01), Burnt et al.
patent: 4177332 (1979-12-01), Mitschke et al.
patent: 4417001 (1983-11-01), Suoboda et al.
patent: 4529744 (1985-07-01), Wood
patent: 4624970 (1986-11-01), Dwyer et al.
"The Perfluoro-t.noteq.butyl Anion in the Synthesis of Organofluorine Compounds"--Dyatkin et al.
"How to Fix the CFC Mix", Chemicalweek/Oct. 18, 1989.

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