Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1994-08-22
2000-01-11
Sanders, Kriellion
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
25240024, 558 78, C08K 553, C08K 1532, C07F 902
Patent
active
060137061
ABSTRACT:
The hydrolysis stability of trivalent organic phosphorus compounds of the formula I ##STR1## used as stabilizers for thermoplastics is improved if these compounds are treated with 0.01 to 5% by weight of an oxide, a carbonate, a hydroxide, a bicarbonate or a carboxylate of a metal of groups 1a, 2a, 2b and 7b of the periodic table of the elements. The storage stability and the ease of handling are increased and the discoloration of the stabilized polymers is reduced.
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Chemical Abstract, vol. 55. No. 24,27, "Hydrolysis of trialkyl phosphites in the presence of inorganic bases".
Goghova, M., et al, Chem. Papers 43:421-432 (1989).
Kleiner Hans-Jerg
Pfahler Gerhard
Regnat Dieter
Clariant GmbH
Sanders Kriellion
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