申请人:SABIC Global Technologies B.V.
公开号:EP3181625A1
公开(公告)日:2017-06-21
The invention relates to a composition comprising (A) a heterophasic propylene
copolymer and (B) a nucleating composition,
wherein (A) the heterophasic propylene copolymer consists of
(a) a propylene-based matrix,
wherein the propylene-based matrix consists of a propylene homopolymer and wherein the propylene-based matrix is present in an amount of 83 to 88 wt%, preferably 84 to 88 wt%, based on the total heterophasic propylene copolymer and
(b) a dispersed ethylene-α-olefin copolymer,
wherein the dispersed ethylene-α-olefin copolymer is present in an amount of 12 to 17 wt%, preferably of 12 to 16 wt%, based on the total heterophasic propylene copolymer and
wherein the sum of the total amount of propylene-based matrix and total amount of the dispersed ethylene-α-olefin copolymer in the heterophasic propylene copolymer is 100 wt%,
wherein the amount of ethylene in the ethylene-α-olefin copolymer is 40 to 60 wt% and wherein the heterophasic propylene copolymer has a melt flow index of 35 to 50 g/10min as determined according to IS01133 at 230 °C and 2.16 kg and
wherein (B) the nucleating composition comprises
(i) a first nucleating agent, which comprises a cyclic dicarboxylate salt compound; and
(ii) a second nucleating agent, which comprises talc,
wherein the cyclic dicarboxylate salt compound has the formula (I): Ph (COO-)2Ca2+ (I).
本发明涉及一种组合物,包括 (A) 异相丙烯共聚物和 (B) 成核组合物。
和(B)成核组合物、
其中 (A) 异相丙烯共聚物包括
(a) 丙烯基基质、
其中丙烯基基体由丙烯均聚物组成,丙烯基基体的含量为异相丙烯共聚物总量的 83-88wt%,优选 84-88wt%,以及
(b) 分散乙烯-α-烯烃共聚物、
其中分散乙烯-α-烯烃共聚物的存在量为杂相丙烯共聚物总量的 12-17wt%,优选 12-16wt%,以及
其中异相丙烯共聚物中丙烯基体的总量和分散乙烯-α-烯烃共聚物的总量之和为 100 wt%、
其中乙烯-α-烯烃共聚物中的乙烯含量为 40 至 60 wt%,杂相丙烯共聚物的熔体流动指数为 35 至 50 g/10min(根据 IS01133,在 230 °C 和 2.16 kg 条件下测定);以及
其中 (B) 成核组合物包括
(i) 第一成核剂,包括环二羧酸盐化合物;和
(ii) 第二成核剂,包括滑石粉、
其中环状二羧酸盐化合物具有式 (I):Ph (COO-)2Ca2+ (I).