申请人:——
公开号:US20010039304A1
公开(公告)日:2001-11-08
The present invention relates to polyolefin compositions which comprise as UV absorber a synergistic mixture of
a) at least one hydroxybenzophenone and at least one 2-hydroxyphenylbenzotriazole with the proviso that the polyolefin is a high density polyethylene of the “Phillips” type or a polyethylene of the metallocene type;
b) at least one hydroxybenzophenone and at least one 2-hydroxyphenyltriazine, with the proviso that if the polyolefin is polypropylene, no polyvinylpyridin is present
c) at least one hydroxybenzophenone and at least one oxanilide;
d) at least one 2-hydroxyphenylbenzotriazole and at least one oxanilide;
e) at least one 2-hydroxyphenyltriazine and at least one oxanilide;
f) at least one hydroxybenzophenone, at least one 2-hydroxyphenylbenzotriazole and at least one oxanilide;
g) at least one hydroxybenzophenone, at least one oxanilide and at least one 2-hydroxyphenyltriazine; or
h) at least one 2-hydroxyphenylbenzotriazole, at least one oxanilide and at least one 2-hydroxy phenyltriazine.
本发明涉及聚烯烃组合物,其紫外线吸收剂包括以下物质的增效混合物
a) 至少一种羟基二苯甲酮和至少一种 2-羟基苯基苯并三唑,但聚烯烃必须 是 "菲利普斯 "类型的高密度聚乙烯或茂金属类型的聚乙烯;
b) 至少一种羟基二苯甲酮和至少一种 2-羟基苯基三嗪,但如果聚烯烃是 聚丙烯,则不含聚乙烯吡啶
c) 至少一种羟基二苯甲酮和至少一种草酰苯胺;
d) 至少一种 2-羟基苯基苯并三唑和至少一种草酰苯胺
e) 至少一种 2-羟基苯基三嗪和至少一种草酰苯胺;
f) 至少一种羟基二苯甲酮、至少一种 2-羟苯基苯并三唑和至少一种草酰苯胺;
g) 至少一种羟基二苯甲酮、至少一种草酰苯胺和至少一种 2-羟基苯基三嗪;或
h) 至少一种 2-羟基苯基苯并三唑、至少一种草酰苯胺和至少一种 2-羟基苯基三嗪。