Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1976-07-12
1977-04-05
Tillman, Murray
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 75NH, 260 775AM, 260 775TB, C08G 1880, C08J 306
Patent
active
040161218
ABSTRACT:
An aqueous polyurethane emulsion is prepared by reacting a polyhydroxyl component containing 15 to 80% by weight of a polyoxyethylene glycol having a molecular weight of 200 to 10,000 with an excess of an organic polyisocyanate to obtain an isocyanate-terminated urethane prepolymer, reacting that prepolymer with an excess of a polyalkylene polyamine thereby to form a polyurethane-urea-polyamine, reacting the free amino groups in the polyurethane-urea-polyamine with a blocked polyisocyanate having a single free isocyanate group, and mixing the resulting product with water, or reacting said resulting product with a cyclic dicarboxylic acid anhydride followed by mixing with water.
REFERENCES:
patent: 3723372 (1973-03-01), Wakimoto et al.
patent: 3799854 (1974-03-01), Jerabek
patent: 3836493 (1974-09-01), Matsuda et al.
patent: 3897377 (1975-07-01), Broecker et al.
patent: 3903031 (1975-09-01), Matsuda et al.
patent: 3903032 (1975-09-01), Matsuda et al.
patent: 3928271 (1975-12-01), Matsuda et al.
patent: 3932561 (1976-01-01), Zamer
patent: 3947338 (1976-03-01), Jerabek et al.
patent: 3951897 (1976-04-01), Matsuda et al.
Matsuda Kazuo
Ohmura Hidemasa
Sakai Takeyo
Kao Soap Co. Ltd.
Koeckert Arthur H.
Tillman Murray
LandOfFree
Aqueous polyurethane having blocked NCO groups and process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aqueous polyurethane having blocked NCO groups and process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aqueous polyurethane having blocked NCO groups and process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2265348