Title:
NORMAL TEMPERATURE-CURING AQUEOUS DISPERSION AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3045973
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject dispersion enabling molecular design of polyurethan resin in itself, and also enabling solution of problems with resistance to water, solvents, and the like, by using a normal temperature-curing double- bonded polyurethane-based resin.
SOLUTION: This dispersion is a normal temperature-curing aqueous dispersion of polyurethane-based resin capable of cross-linking curing at normal temperatures in its film formation, and having normal temperature-curing double bonds (preferably, the cyclopentene residue of formula I). This dispersion is obtained e.g. by reacting an isocyanate-containing urethane prepolymer with a monomer having a hydroxyl and a polymerizable double bond, then, reacting the resultant product with a monomer of formula II [R1 is H or a 1-3C alkyl; X is (Y-O)n (Y is a 1-4C alkylene; (n) is 0 or 1)] to impart the above double bond, and dispersing the resulting oligomer in water, followed by reaction with a chain extender prepared by dissolving an excess of isocyanate in water.
Inventors:
Seiji Asaoka
Application Number:
JP8494997A
Publication Date:
May 29, 2000
Filing Date:
April 03, 1997
Export Citation:
Assignee:
Japan NSC Co., Ltd.
International Classes:
C08L75/14; C08F299/06; C08G18/67; C09D175/14; C09D175/16; (IPC1-7): C08L75/14; C08F299/06; C08G18/67
Domestic Patent References:
| JP7166130A | ||||
| JP55133450A |
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)