Title:
HOT MELT FILM ADHESIVE AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3703902
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject adhesive not yellowed and excellent in low temperature flexibility by partially introducing methyl group side chains into the molecular structure of a thermoplastic polyurethane resin produced from a single aliphatic diisocyanate.
SOLUTION: This composition comprising (A) an aliphatic diisocyanate, (B) a polymer diol and (C) a chain extender wherein at least one of the components contains one or more methyl side chains in the molecule is reacted with each other in a solvent-free state, and the obtained thermoplastic polyurethane resin having a hardness (JIS-A hardness) of 65-90 degree and a flow- starting temperature of 80-150°C is hot-formed into a film. The component A is preferably a 4-13C aliphatic diisocyanate, and the component B is preferably a polymer diol having repeating units having methyl side chains. The component C includes ethylene glycol, diethylene glycol and propylene glycol.
Inventors:
Mamoru Oyamauchi
Ishihara Masato
Ishihara Masato
Application Number:
JP6506396A
Publication Date:
October 05, 2005
Filing Date:
February 16, 1996
Export Citation:
Assignee:
Nippon Miractolan Co., Ltd.
International Classes:
C09J7/00; C08G18/42; C08G18/65; C08G18/66; C09J175/00; C09J175/04; (IPC1-7): C09J7/00; C08G18/66; C09J175/04
Domestic Patent References:
| JP51041651B1 | ||||
| JP4332719A | ||||
| JP2248486A |
Attorney, Agent or Firm:
岡▲崎▼ 秀雄