FIELD: chemical technology. SUBSTANCE: method involves the use of hydroxyl-containing oligomers with diene, siloxane or hydroxyalkylene chain with mean molecular mass from 860 to 3540 in combination with low-molecular branched glycols for reaction with aromatic diisocyanate in the medium of chloro-containing hydrocarbon. Process is carried out at the molar ratio of NCO-groups of isocyanate to OH-groups of polyol from 1.5 to 10. Product is used for production of artificial leather, dressing material in the process of chemical cleaning. EFFECT: improved method of preparing.
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Authors
Dates
1995-12-20—Published
1992-04-10—Filed