Process for the preparation of hydrolysis-stable trivalent phosphorus compounds and their use as stabilizers for thermoplastics
Номер патента: CA2097674A1
Опубликовано: 05-12-1993
Автор(ы): Dieter Regnat, Gerhard Pfahler, Hans-Jerg Kleiner
Принадлежит: Hoechst AG
Опубликовано: 05-12-1993
Автор(ы): Dieter Regnat, Gerhard Pfahler, Hans-Jerg Kleiner
Принадлежит: Hoechst AG
Реферат: Abstract of the disclosure: The hydrolysis stability of trivalent organic phosphorus compounds of the formula I P(OR1)3 (I) of the formula II (II) or of the formula III R3-[P(OR2)2]n (III) 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.
Process for the preparation of hydrolysis-stable trivalent phosphorus compounds and their use as stabilizers for thermoplastics and thermoplastics composition containing hydrolysis-stable trivalent phosphorus compounds
Номер патента: KR100292209B1. Автор: 한스예르크클라이너,디터레크나트,게르하르트팔러. Владелец: 카흐홀즈 트라우델, 귀틀라인 파울. Дата публикации: 2001-11-22.