Process for stabilizing trivalent phosphorus compounds with amin

Details Process for stabilizing trivalent phosphorus compounds with amin Process for stabilizing trivalent phosphorus compounds with amin

1993-09-30

1994-12-06

Morris, Patricia L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus esters

C07F 948, C07F 9141

Patent

active

053712633

ABSTRACT:
The invention relates to a process for stabilizing a crystalline organic phosphite or phosphonite against hydrolysis, which comprises introducing a mixture comprising phosphite or phosphonite, a solvent or solvent mixture, and 0.1 to 100% by weight (relative to phosphite or phosphonite) of an amine and having a temperature of 50.degree.-100.degree. C. as a homogeneous melt into a liquid crystallization medium whose temperature during the addition is maintained 10.degree.-70.degree. C. below the temperature of the melt.
The phosphites or phosphonites stabilized according to the invention are distinguished by their excellent resistance to hydrolysis and have a long shelf life even at high atmospheric humidity. They can be advantageously used as stabilizers for organic material against the damaging effect of heat, oxygen, and/or light.

REFERENCES:
patent: 3553298 (1971-01-01), Hodan et al.
patent: 3787537 (1974-01-01), De Marcq

Affiliated with

Also associated with

Rating

Process for stabilizing trivalent phosphorus compounds with amin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for stabilizing trivalent phosphorus compounds with amin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for stabilizing trivalent phosphorus compounds with amin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-215863