Methods of preparing stable condensation products and products t

Details Methods of preparing stable condensation products and products t Methods of preparing stable condensation products and products t

1974-05-28

1976-05-25

Raymond, Richard L.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

260 25AJ, 260 25AR, 260978, 260983, C07F 908

Patent

active

039594157

ABSTRACT:
Products which are phosphorus containing oligomers having ##EQU1## linkages between phosphorus atoms and which are obtained by the self-condensation of .beta.-haloalkyl esters of pentavalent phosphorus acids or by condensation of these esters with an alkyl ester of a pentavalent phosphorus acid are treated after residual acidity has been neutralized with an alkylene oxide for a period of time which is sufficient to enable the alkylene oxide to act upon labile groups contained in the condensed product, i.e., cyclic, pyro and bridged groups, and to neutralize any further acidity generated by the opening of such groups. The stabilized products formed by this process when incorporated in a polyurethane foam formulation produce a foam having superior green strength to a foam containing such products which have not been treated in accordance with this invention.

REFERENCES:
patent: 3641202 (1972-02-01), Biranowski et al.
patent: 3822327 (1974-07-01), Weil

Affiliated with

Also associated with

Rating

Methods of preparing stable condensation products and products 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 Methods of preparing stable condensation products and products t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods of preparing stable condensation products and products t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-906020