Composition and method of preparation of viscosity-stabilized po

Details Composition and method of preparation of viscosity-stabilized po Composition and method of preparation of viscosity-stabilized po

1991-04-08

1992-12-08

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

528 73, 2521822, 25218221, 544194, C08G 1873

Patent

active

051698781

ABSTRACT:
A viscosity-stable polyisocyanate prepared by heating a polyisocyanate containing uretone imine groups and a catalyst under reaction conditions sufficient to produce compounds containing 2-imino-4,6-dioxohexahydro-s-triazine groups is disclosed. The polyisocyanate product so prepared may be used alone or blended with other polyisocyanates or diisocyanates to produce polyurethane, polyisocyanurate, polyamide and related polymers. These polymers, when used to prepare a foam, may exhibit improved dimensional stability and flammability. Also disclosed is a family of isocyanate compounds containing at least one 2-imino-4,6-dioxohexahydro-s-triazine group and having an isocyanate functionality of at least 4.

REFERENCES:
patent: 3728289 (1973-04-01), Reuter et al.
patent: 3745134 (1973-07-01), Fensch
patent: 4193932 (1980-03-01), Zamamota et al.
patent: 4294719 (1981-10-01), Wagner et al.
patent: 4424284 (1984-01-01), Patton, Jr. et al.
patent: 4699933 (1987-10-01), Hefner, Jr. et al.
R. Richter & H. Ulrich, Two Synthetic Routes to 1,3,5-Triaryl-2-Phenylimino-4,6-Dioxohexahydro-S-Triazines, 22 Tetrahedron Letters 1875-78 (1974).

Affiliated with

Also associated with

Rating

Composition and method of preparation of viscosity-stabilized po does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Composition and method of preparation of viscosity-stabilized po, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition and method of preparation of viscosity-stabilized po will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-961348