Method of hardening gelatin using sulfonyl compounds

Details Method of hardening gelatin using sulfonyl compounds Method of hardening gelatin using sulfonyl compounds

1976-04-26

1977-06-07

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

96111, 106125, C09H 700

Patent

active

040283208

ABSTRACT:
A method of hardening gelatin which comprises adding thereto a compound of the following general formula (I): ##STR1## in which Y.sub.1 is CH.sub.2 =CH--, ClCH.sub.2 --CH.sub.2 --, BrCH.sub.2 --CH.sub.2 --, CH.sub.3 COO--CH.sub.2 CH.sub.2 -- or ClCH.sub.2 COO--CH.sub.2 CH.sub.2 --, R.sub.1 and R.sub.2 are H or CH.sub.3, but both of them are not CH.sub.3 at the same time, and A is one of the following groups: ##STR2## in which both R.sub.3 and R.sub.4 were acyl groups or at least one of them is an acyl group other than when R.sub.3 and R.sub.4 form a benzotriazole ring, and when one of R.sub.3 and R.sub.4 is an acyl group, the other is H or an alkyl group containing at most 4 carbon atoms; and wherein in any case, R.sub.3 and R.sub.4 may form a saturated or unsaturated carbocyclic or heterocyclic ring in combination with the nitrogen atom to which they are attached; R.sub.5, R.sub.6 and R.sub.7 are alkyl groups containing at most 4 carbon atoms, and may form a saturated or unsaturated ring, or may form a bicyclo ring; X.sup.- is an acid anion; R.sub.8 and R.sub.9 are a saturated or unsaturated carbocyclic or heterocyclic ring which combine with the nitrogen atom to which they are attached; R.sub.10 is an alkyl or aryl group containing at most 6 carbon atoms; R.sub.11 is an alkyl group containing at most 3 carbon atoms; R.sub.12 is an alkyl, aryl or aralkyl group containing at most 7 carbons atoms; Y.sub.2 is CH.sub.2 =CH--, ClCH.sub.2 --CH.sub.2 --, Br--CH.sub.2 CH.sub.2 --, CH.sub.3 COO--CH.sub.2 CH.sub.2 --, or ClCH.sub.2 COO--CH.sub.2 CH.sub.2 --, and Y.sub.1 is as earlier defined.

REFERENCES:
patent: 3132945 (1964-05-01), Ryan
patent: 3455892 (1969-07-01), Froehlich
patent: 3490911 (1970-01-01), Burness et al.
patent: 3642486 (1972-02-01), Burness et al.
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patent: 3689274 (1972-09-01), Sobel et al.
patent: 3839042 (1974-10-01), Silverman et al.
patent: 3841872 (1974-10-01), Burness et al.
patent: 3868257 (1975-02-01), Horii et al.

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