Title:
CLEANING OF HIDE AND LEATHER
Document Type and Number:
Japanese Patent JPS6215378
Kind Code:
A
Abstract:
Process for cleaning furs and leathers by treating these materials with pieces of open-celled polyurethane foam having a density of from 60 to 120 kg/m<3> which have been treated with halocarbons. A polyurethane foam suitable for this purpose is obtained by reacting mixtures of polyalkylene glycols having an equivalent weight of from 200 to 2000 and polyhydroxy compounds having an equivalent weight of from 30 to 100 with isocyanato-containing precursors of polyisocyanates and polyalkylene glycols having an equivalent weight of from 50 to 500, preferably 300. Polyurethane foams of this kind are very retentive of the solvent, which is released only gradually. This ensures very gentle cleaning.
Inventors:
YOAHIMU NAUMAN
KURAUSU YURUGEN BEEME
RIYUUDEIGERU BAUSUKE
KURAUSU YURUGEN BEEME
RIYUUDEIGERU BAUSUKE
Application Number:
JP15989286A
Publication Date:
January 23, 1987
Filing Date:
July 09, 1986
Export Citation:
Assignee:
HOECHST AG
International Classes:
C11D3/37; C14C11/00; D06L1/00; D06L1/01; D06L1/02; D06L1/04; (IPC1-7): C14C11/00; D06L1/02; D06L1/04
Attorney, Agent or Firm:
Ezaki Mitsuyoshi