公开(公告)号：US20150105483A1

公开(公告)日：2015-04-16

申请号：US14508016

申请日：2014-10-07

Applicant: JSP CORPORATION

Inventor： Masaomi SHIMA

IPC: C08J9/18

CPC classification number: C08J9/18 ,  C08J9/0061 ,  C08J9/141 ,  C08J9/232 ,  C08J2201/026 ,  C08J2203/14 ,  C08J2203/202 ,  C08J2205/052 ,  C08J2323/06 ,  C08J2325/06 ,  C08J2325/14 ,  C08J2423/08 ,  C08L23/0815 ,  C08L2203/14 ,  C08L2205/04 ,  C08L2312/00 ,  C08L25/06 ,  C08L23/06

Abstract: An expandable composite resin bead comprises: a composite resin containing a polyethylene resin and a polystyrene resin; and a blowing agent impregnating the composite resin. The composite resin contains 5 to 20 mass % of the polyethylene resin and 80 to 95 mass % of the polystyrene resin. The blowing agent is an organic physical blowing agent. Furthermore, in the expandable composite resin bead, a predetermined swelling degree in methyl ethyl ketone at a temperature of 23° C. is not lower than 1.25.

Abstract translation: 可膨胀复合树脂珠包括：含有聚乙烯树脂和聚苯乙烯树脂的复合树脂; 和浸渍复合树脂的发泡剂。 复合树脂含有5〜20质量％的聚乙烯树脂和80〜95质量％的聚苯乙烯树脂。 发泡剂是有机物理发泡剂。 此外，在可膨胀复合树脂珠中，甲基乙基酮在23℃的温度下的预定溶胀度不低于1.25。

公开(公告)号：US20160053068A1

公开(公告)日：2016-02-25

申请号：US14824564

申请日：2015-08-12

Applicant: JSP CORPORATION

Inventor： Masaomi SHIMA

IPC: C08J9/22 ,  C08J9/14

CPC classification number: C08J9/22 ,  C08J9/141 ,  C08J9/16 ,  C08J9/232 ,  C08J2203/14 ,  C08J2351/06

Abstract: An expandable composite resin bead containing an organic physical blowing agent and a base resin composed of a composite resin obtained by polymerizing a styrene monomer in a polypropylene resin. The styrene monomer is polymerized in an amount of more than 400 parts by mass and not more than 1900 parts by mass with respect to 100 parts by mass of the polypropylene resin. The composite resin contains xylene solubles to be obtained through xylene solvent Soxhlet extraction of the expandable composite resin bead, the xylene solubles contain acetone solubles to be obtained through dissolution of the xylene solubles into acetone, and the acetone solubles have an absorbance ratio A (D698/D1376) of an absorbance D698 to an absorbance D1376 that are respectively measured at a wavenumber of 698 cm−1 and 1376 cm−1 as infrared absorption spectra of the acetone solubles within a range of from 8.5 to 23.

Abstract translation: 一种包含有机物质发泡剂和由通过在聚丙烯树脂中聚合苯乙烯单体获得的复合树脂构成的基础树脂的可膨胀复合树脂珠粒。 相对于100质量份的聚丙烯树脂，苯乙烯单体的聚合量大于400质量份且不超过1900质量份。 复合树脂含有通过二甲苯溶剂获得的二甲苯可溶物索氏提取可膨胀复合树脂珠，二甲苯可溶物含有通过将二甲苯可溶物溶解在丙酮中而获得的丙酮可溶物，丙酮可溶物具有吸光度比A（D698 / D1376）的吸光度D698相对于在波长为698cm -1和1376cm -1处分别测量的吸光度D1376，作为丙酮可溶物的红外吸收光谱在8.5至23的范围内。