Removal of unreacted diisocyanate monomer from polyurethane prep

Details Removal of unreacted diisocyanate monomer from polyurethane prep Removal of unreacted diisocyanate monomer from polyurethane prep

1996-06-03

1997-12-30

Cooney, Jr., John M.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 76, 528 80, 528 85, 560 25, 560 26, 560352, 560360, C08G 1810

Patent

active

057031932

ABSTRACT:
A process for reducing the amount of residual organic diisocyanate monomer in a polyurethane prepolymer reaction product mixture which comprises distilling the polyurethane prepolymer reaction product mixture in the presence of a combination of at least one inert first solvent with a boiling point below the boiling point of the residual organic diisocyanate monomer and at least one inert second solvent with a boiling point above the boiling point of the residual organic diisocyanate monomer, at a temperature which exceeds the vaporization temperature of the residual organic diisocyanate monomer and which is below the decomposition temperature of the polyurethane prepolymer.

REFERENCES:
patent: 3248372 (1966-04-01), Bunge
patent: 3384624 (1968-05-01), Heiss
patent: 4061662 (1977-12-01), Marans
patent: 4169175 (1979-09-01), Marans et al.
patent: 4182825 (1980-01-01), Jackle
patent: 4288577 (1981-09-01), McShane
patent: 4385171 (1983-05-01), Schnabel
patent: 4888442 (1989-12-01), Dunlap
patent: 5202001 (1993-04-01), Starner

Affiliated with

Also associated with

Rating

Removal of unreacted diisocyanate monomer from polyurethane prep does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Removal of unreacted diisocyanate monomer from polyurethane prep, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Removal of unreacted diisocyanate monomer from polyurethane prep will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-203262