Urethane-modified carbodiimide-isocynurate foams prepared from T

Details Urethane-modified carbodiimide-isocynurate foams prepared from T Urethane-modified carbodiimide-isocynurate foams prepared from T

Filed on

1974-10-02

Date issued

1976-11-30

Examiner

Ivy, C. Warren

Patent Class

Chemistry of carbon compounds

SubClass

Miscellaneous organic carbon compounds

Other Related Categories

260 25AT, 260 25AW, C08G 1812, C08G 1814

Type

Patent

Status

active

Patent number

039948374

Description

ABSTRACT:
Rigid cellular foams characterized by carbodiimide linkages exhibit low friability and excellent flame retardancy when prepared from isocyanates rich in toluene diisocyanate. The forms hereof are prepared by the catalytic condensation of the isocyanates by using either (1) isocyanate quasi-prepolymers or (2) a two-stage process wherein isocyanate and polyol are first reacted to form a urethane-containing intermediate having free isocyanate groups and then the remaining isocyanate groups are converted to carbodiimide groups and isocyanurate groups by the catalytic condensation thereof.

REFERENCES:
patent: 3580868 (1971-05-01), Diehr
patent: 3772217 (1973-11-01), Kan
patent: 3790509 (1974-02-01), Diehr
patent: 3806475 (1974-04-01), Narayan
patent: 3859162 (1975-01-01), Johnson

Affiliated with

Also associated with

Rating

Urethane-modified carbodiimide-isocynurate foams prepared from T does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Urethane-modified carbodiimide-isocynurate foams prepared from T, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Urethane-modified carbodiimide-isocynurate foams prepared from T will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1053790