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1. (WO2018161855) POLYPROPYLENE COMPOSITION HAVING LOW SURFACE TEMPERATURE, PREPARATION METHOD THEREFOR AND USES THEREOF

Pub. No.:    WO/2018/161855    International Application No.:    PCT/CN2018/077872
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Sat Mar 03 00:59:59 CET 2018
IPC: C08L 23/12
C08L 23/08
C08K 13/02
C08K 3/22
Applicants: KINGFA SCI. & TECH. CO., LTD.
金发科技股份有限公司
SHANGHAI KINGFA SCI & TECH CO
上海金发科技发展有限公司
Inventors: LEI, Liang
雷亮
WANG, Dazhong
王大中
SU, Juanxia
苏娟霞
XIE, Zhengrui
谢正瑞
SUN, Gang
孙刚
WU, Guofeng
吴国峰
YANG, Bo
杨波
LUO, Zhongfu
罗忠富
Title: POLYPROPYLENE COMPOSITION HAVING LOW SURFACE TEMPERATURE, PREPARATION METHOD THEREFOR AND USES THEREOF
Abstract:
Disclosed in the present invention are a polypropylene composition having low surface temperature, a preparation method therefor, and uses thereof. The polypropylene composition having low surface temperature comprises components of: 47-85 parts of polypropylene resin and 5-20 parts of elastomer; and the polypropylene composition having low surface temperature comprises 1000 ppm-4000 ppm of a pigment which is selected from one of or a mixture of rutile-type pigments, spinel-type pigments, or hematite-type pigments. The preparation method for the polypropylene composition comprise: uniformly mixing the polypropylene resin, the pigment, and the elastomer; feeding into a twin-screw extruder to be melted and mixed; and then performing extruding and granulating to obtain the polypropylene composition having low surface temperature of the present invention. The polypropylene composition having low surface temperature of the present invention has a higher near-infrared reflectivity; and after the polypropylene composition and other polypropylene compositions on the market are irradiated with near-infrared rays of the same frequency for a certain period of time, the surface temperature of the propylene composition of the present invention is found to be significantly lower. The polypropylene composition of the present invention can be widely used in dashboards, sub-dashboards, door panels, seats, or bumpers.