Polyolefin-based resin pre-expanded particle, in-mold foamed article, process for producing the polyolefin-based resin pre-expanded particle, and process for producing the in-mold foamed article
申请人:Kaneka Belgium N.V.
公开号:US10344137B2
公开(公告)日:2019-07-09
A polyolefin-based resin pre-expanded particle includes a polyolefin-based resin; an organic phosphorus-containing compound being nitrogen-free; and a hindered amine having an OR group substituted directly on an N-atom where R is a saturated or unsaturated hydrocarbyl group, wherein the organic phosphorus-containing compound is at least one selected from the group consisting of alkyl phosphonic acid, an ester of the alkyl phosphonic acid, aryl phosphonic acid, an ester of the aryl phosphonic acid, a cyclic phosphonate, and a cyclic bisphosphonate, the polyolefin-based resin pre-expanded particle comprises from 1.0% by weight to 10% by weight of the organic phosphorus-containing compound and from 0.1% by weight to 5.0% by weight of the hindered amine, and the weight ratio of the organic phosphorus-containing compound to the hindered amine is from 1.0 to 20.
一种聚烯烃基树脂预膨化粒子包括聚烯烃基树脂;一种不含氮的有机含磷化合物;和一种受阻胺,该受阻胺具有一个直接在N原子上被取代的OR基团,其中R是饱和或不饱和的烃基,其中所述有机含磷化合物至少是选自由烷基膦酸、烷基膦酸的酯类、芳基膦酸、芳基膦酸的酯类、环状膦酸盐和环状双膦酸盐组成的组中的一种,所述聚烯烃基树脂预膨化粒子包括1.0%(重量)至 10%(重量)的有机含磷化合物和 0.1%(重量)至 5.0%(重量)的受阻胺,且有机含磷化合物与受阻胺的重量比为 1.0 至 20。