Title:
HOT-MELT POLYURETHANE COMPOSITIONS AND SHOES BONDING METHOD USING THE SAME
Document Type and Number:
Japanese Patent JPH02252785
Kind Code:
A
Abstract:
PURPOSE: To obtain an improved humidity curable hot-melt adhesive for bonding shoe soles to shoe uppers even when leather high in free fatty acid content is used by using a polyurethane prepolymer as a base material and adding a specified chain-extending agent thereto.
CONSTITUTION: A polyurethane prepolymer is used as a base material and 0.5-30 wt.% of aliphatic cyclic carbonate and 0.1-5 wt.% of aromatic carbodiimide are added to the base material to produce a reactive hot-melt urethane compsn. By this method, an improved humidity curable hot-melt adhesive effective for bonding shoe soles to a shoe uppers even when leather high in free fatty acid content is used within a short time is obtained.
Inventors:
KARURU HAINTSU ARUBERUTO
FUUBERUTOUSU FUON FUOITENBERUK
FUUBERUTOUSU FUON FUOITENBERUK
Application Number:
JP2589190A
Publication Date:
October 11, 1990
Filing Date:
February 05, 1990
Export Citation:
Assignee:
BOSTIK INC
International Classes:
A43D25/06; A43D25/20; A43D86/00; C08G18/00; C08G18/10; C08G18/30; C08G18/38; C08G18/65; C08K5/156; C08K5/29; C09J5/02; C09J5/06; C09J175/00; C09J175/04; (IPC1-7): A43B10/00; C08G18/30; C08G18/38; C09J5/02; C09J5/06; C09J175/00
Attorney, Agent or Firm:
Minoru Nakamura (7 outside)
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