Process for the preparation of treating liquids, stable under st

Details Process for the preparation of treating liquids, stable under st Process for the preparation of treating liquids, stable under st

1975-08-01

1977-11-15

Pertilla, Theodore E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252 88, C08L 6124

Patent

active

040584984

ABSTRACT:
A process for preparing liquid treating agents, stable under storage, especially for improving the wrinkle-free characteristics of cellulosic textiles treated with the liquid in which urea is condensed with formaldehyde in an aqueous solution in the presence of glyoxylic acid. This condensation is carried out in a first step using an acid pH between 2 and 5 with a molar ratio of urea/formaldehyde/glyoxylic acid of 1 : 2 to 10 : 0.03 to 0.6 and at a temperature between 20.degree. and 100.degree. C. In a second stage the reaction is carried out at a slightly acidic pH between 6 and 7 at a temperature between 20.degree. and 60.degree. C with addition of a fresh quantity of urea and eventually a fresh quantity of formaldehyde in an aqueous solution so as to obtain an overall molar ratio of urea/formaldehyde/glyoxylic acid of 1 : 1.5 to 3.5 : 0.03 to 0.6.

REFERENCES:
chem. Abstracts, vol. 67, 11/1967, 109847r.

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