摘要:
The foaming window for making a foam useful in the manufacture of artificial leather is expanded through the use of a foamable composition comprising (A) a propylene-α-olefin copolymer, (B) a molecular melt (MM) comprising 4,4′-oxydibenzenesulfonylazide (DPO-BSA) and an antioxidant, and (C) a blowing agent. The foaming window can be expanded such that foaming can occur at 220° C. for 20 to 200 or more seconds.
摘要:
The foaming window for making a foam useful in the manufacture of artificial leather is expanded through the use of a foamable composition comprising (A) a propylene-α-olefin copolymer, (B) a molecular melt (MM) comprising 4,4′-oxydibenzenesulfonylazide (DPO-BSA) and an antioxidant, and (C) a blowing agent. The foaming window can be expanded such that foaming can occur at 220° C. for 20 to 200 or more seconds.
摘要:
Artificial leather comprising a multi-layer structure comprises a top coating layer, a middle foam layer, and a bottom fabric layer. The top coating layer comprises a propylene- alpha-olefin copolymer in combination with one or more elastomeric compounds, the foam layer also comprises a propylene-alpha-olefin copolymer in combination with one or more elastomeric compounds plus a blowing agent, and the fabric layer comprises a nonwoven spunbond material.
摘要:
An article comprising a polymeric foam, wherein the polymeric foam contains a continuous polymer matrix defining cells therein, the polymer matrix containing: (a) from 25 to 65 weight percent of one or more olefin block copolymer having a melt index of two grams per ten minutes or more, (b) from 65 to 25 weight percent of one or more chlorinated olefin polymer having a Mooney viscosity less than 60 (ML 1+4, 125° C.), and (c) from 5 to 30 weight parts of antimony trioxide relative to 100 weight parts of polymers in the polymeric foam, with weight percent values relative to total polymer weight in the polymeric foam; a process for preparing the article.
摘要:
An article comprising a polymeric foam, wherein the polymeric foam contains a continuous polymer matrix defining cells therein, the polymer matrix containing: (a) from 25 to 65 weight percent of one or more olefin block copolymer having a melt index of two grams per ten minutes or more, (b) from 65 to 25 weight percent of one or more chlorinated olefin polymer having a Mooney viscosity less than 60 (ML 1+4, 125° C.), and (c) from 5 to 30 weight parts of antimony trioxide relative to 100 weight parts of polymers in the polymeric foam, with weight percent values relative to total polymer weight in the polymeric foam; a process for preparing the article.
摘要:
An epoxy resin composition useful in an electrical laminate, which composition comprises:(A) an epoxy resin prepared by reacting (A-1) an epoxy resin having an average of more than one, but less than three epoxy groups per molecule and (A-2) a phenolic compound having an average of more than one, but less than three hydroxyl groups per molecule at a ratio to provide an epoxy to phenolic equivalent ratio of 1:x;(B) y equivalent of a phenolic compound having an average of more than one, but less than three hydroxyl groups per molecule; and(C) at least one catalyst for catalyzing a reaction of Component (A) and Component (B);wherein x and y satisfy the following equations:x.gtoreq.0.01y.gtoreq.0.010.02.ltoreq.x+y
摘要翻译:一种用于电气层压板的环氧树脂组合物,该组合物包括:(A)通过(A-1)每分子平均具有多于一个但小于三个环氧基的环氧树脂(A-1)制备的环氧树脂和 -2)一种酚类化合物,其平均每分子具有一个以上但不到三个羟基,以提供环氧树脂与酚当量比为1:x的比例; (B)y当量,每分子平均具有多于一个但少于三个羟基的酚类化合物; 和(C)至少一种用于催化组分(A)和组分(B)的反应的催化剂; 其中x和y满足以下等式:x> / = 0.01y> / = 0.01 0.02 = x + y <1.00。 所公开的环氧树脂组合物当溶解在有机溶剂中时粘度低,并且在固化时具有良好的耐热性。
摘要:
Electrical laminates can be prepared from an epoxy resin composition which comprises:(A) at least one epoxy resin having an average of more than one epoxy group per molecule;(B) an oligomer having a terminal phenolic hydroxyl group, which oligomer results from the reaction of a glycidyl ether of a halogenated phenolic compound and a halogenated phenolic compound; and(C) at least one catalyst for catalyzing a reaction between Component (A) and Component (B).