Use of carbonyl compounds, sulfonyl compounds and/or thioureas a

Details Use of carbonyl compounds, sulfonyl compounds and/or thioureas a Use of carbonyl compounds, sulfonyl compounds and/or thioureas a

1983-08-15

1986-01-21

Kight, John

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

260453SP, 260463, 514512, A61K 31265

Patent

active

045656487

ABSTRACT:
A process for producing storage-stable solutions of pyrocarbonic acid dialkyl esters in organic liquids inert to these esters comprising adding certain carbonyl compounds, sulfonyl compounds and/or thiourea to these pyrocarbonic acid dialkyl ester solutions. Also the use of these carbonyl compounds, sulfonyl compounds and/or thiourea for producing stabilized polyisocyanate preparations suitable for the production of polyurethane foams.

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patent: 3584386 (1971-06-01), Taylor
patent: 3751264 (1973-08-01), Strandskov
patent: 3817766 (1974-06-01), Von Bonin
patent: 3920847 (1975-11-01), Chalaust
patent: 3936269 (1976-02-01), Bayne
patent: 3985720 (1976-10-01), Manner
Chem. Abstr. 78, 3020C.
Chem. Abstr. 76, 71075h.
V. I. Kovalenko, J. Gen Chem. USSR, 1952, 22, 1587.
Chem. Abstr. 76, 13846z.
Chem. Abstr. 78, 147374u.
"Determination and Decomposition of Diethylpyrocarbonate, I. Determination with Isobutylamine and Decomposition in Various Solutions", S. Hara et al., Chemical Abstracts, vol. 67, No. 3, Jul. 17, 1967, p. 972, #10377a.

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