申请人:The Geon Company
公开号:EP0656634A2
公开(公告)日:1995-06-07
Lead-free thermoplastic polyvinyl chloride conductor coverings are disclosed which are free of lead and molecular sieve. The coverings comprise:
100 parts by weight polyvinyl chloride,
from 5 to 100 parts by weight of plasticizer, from 3 to 50 weight parts of calcined clay and a stabilizer system consisting essentially of at least two different organometal salts, and from 0.5 to 10 weight parts of finely divided hydrotalcite having the formulae:
[(M₁²⁺)y₁ (M₂²⁺)y₂] 1-x M x³⁺(OH)₂ Ax/nn- mH₂O (I)
or
Mg 1-x Alx (OH)₂ Ax/nn- mH₂O (II)
or
Mg 1-x Alx (OH)2+x mH₂O (III)
wherein M₁²⁺ represents at least one divalent metal cation, M₂²⁺ represents at least one divalent metal cation, M³⁺ represents a trivalent metal cation, An-represents at least one anion having a valency of n and x, y1, y2 and m are represented by the following expressions
0 < x ≦ 0.5, 0 < y₁, 0 < y₂, 0.5 ≦ (y₁+y₂) < 1, and 0≦ m < 2;
or
a product resulting from surface treatment of I, II, or III with an anionic surface active agent.
本发明公开了不含铅和分子筛的无铅热塑性聚氯乙烯导体覆盖层。覆盖层包括
100 重量份的聚氯乙烯
重量份数为 5 至 100 份的增塑剂、重量份数为 3 至 50 份的煅烧粘土和主要由至少两种不同有机金属盐组成的稳定剂系统,以及重量份数为 0.5 至 10 份的细小水滑石,其化学式如下: - 重量份数为 5 至 100 份的增塑剂、重量份数为 3 至 50 份的煅烧粘土和主要由至少两种不同有机金属盐组成的稳定剂系统:
[(M₁²⁺)y₁ (M₂²⁺)y₂] 1-x M x³⁺(OH)₂ Ax/nn- mH₂O (I)
或
Mg 1-x Alx (OH)₂ Ax/nn- mH₂O (II)
或
Mg 1-x Alx (OH)2+x mH₂O (III)
其中 M₁²⁺ 代表至少一个二价金属阳离子,M₂²⁺ 代表至少一个二价金属阳离子,M³⁺ 代表一个三价金属阳离子,An- 代表至少一个化合价为 n 的阴离子,x、y1、y2 和 m 用以下表达式表示
0 < x ≦ 0.5, 0 < y₁, 0 < y₂, 0.5 ≦ (y₁+y₂) < 1, 0≦ m < 2;
或
用阴离子表面活性剂对 I、II 或 III 进行表面处理后得到的产品。