EINE KOMBINATION WÄRMESTABILISATOR/GLEITMITTEL FÜR DIE PVC-VERARBEITUNG UND METHODE ZUR DEREN HERSTELLUNG

The prepn. of a Zn mercaptoester comprises (a) heating a mixt. of ZnO, a mercaptoester of the formula HS-(CH2C(=O)OR)x-(CH2)yOC(=O) OR) (I), and a paraffin wax to a temp. at least equal to the melting range of the wax; and (b) removing water as it forms. Also claimed are the following: (i) the mfr....

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Bibliographische Detailangaben
Hauptverfasser: MESCH, KEITH A, BEEKMAN, GEORGE F, PRICE, LIONEL R
Format: Patent
Sprache:ger
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Zusammenfassung:The prepn. of a Zn mercaptoester comprises (a) heating a mixt. of ZnO, a mercaptoester of the formula HS-(CH2C(=O)OR)x-(CH2)yOC(=O) OR) (I), and a paraffin wax to a temp. at least equal to the melting range of the wax; and (b) removing water as it forms. Also claimed are the following: (i) the mfr. of a stabiliser compsn. for halogen-contg. polymers comprising (a) heating a mixt. of ZnO, a mercaptoester of the formula (I) and a paraffin wax to a temp. at least equal to the melting range of the wax, (b) removing water as it forms, (c) adding Ca(OH)2 and stearic acid, and (d) heating the resulting mixt. to remove water; (ii) a heat stabiliser compsn. comprising a paraffin wax, Ca stearate and a Zn mercaptoester; and (iii) a polymer compsn. comprising a halogen-contg. polymer and a heat stabiliser compsn. R = 1-20C straight or branched chain satd. or unsatd. alkyl; x = 0 or 1; y = 1 or 2; and y = 1 when x = 1.