Title:
PHOTOCHROMIC POLYPROPYLENE COMPOSITE, PREPARATION METHOD FOR SAME, AND APPLICATIONS THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/130117
Kind Code:
A1
Abstract:
Disclosed is a photochromic polypropylene composite, comprising the following components in terms of parts by weight: a polypropylene resin 96.5-98.5 parts and a photochromic microcapsule 0.5-2.5 parts. The core material of the photochromic microcapsule is a spiropyran, the wall material is a melamine formaldehyde resin, the wall material is formed by polymerizing formaldehyde and melamine, and the molar ratio of formaldehyde/melamine is 2.5/1-3/1. First, melamine and formaldehyde undergo an addition reaction in an environment of pH 7.5-8.5 to produce a hydroxymethyl melamine prepolymer, then a photochromic material spiropyran compound is dispersed in sodium dodecyl sulfate aqueous solution of a concentration of 0.2-1.0 wt%, then the hydroxymethyl melamine prepolymer is added to the solution, and the solution is regulated to a pH of 5.5-6.5 to produce a microcapsule emulsion, which is reacted at 80-90 °C for 3 h, rinsed, suction-filtered, and dried to produce the photochromic microcapsule. The photochromic polypropylene composite is capable of withstanding long-term exposure to sunlight, steadily changes colors back and forth, has great long-term weather resistance, and is widely applicable in interior and exterior decorative accessories for a vehicle.
Inventors:
LEI LIANG (CN)
WANG DAZHONG (CN)
SU JUANXIA (CN)
LIN RONGTAO (CN)
SUN GANG (CN)
WU GUOFENG (CN)
YANG BO (CN)
LUO ZHONGFU (CN)
WANG DAZHONG (CN)
SU JUANXIA (CN)
LIN RONGTAO (CN)
SUN GANG (CN)
WU GUOFENG (CN)
YANG BO (CN)
LUO ZHONGFU (CN)
Application Number:
PCT/CN2018/071537
Publication Date:
July 19, 2018
Filing Date:
January 05, 2018
Export Citation:
Assignee:
KINGFA SCIENCE & TECHNOLOGY CO (CN)
SHANGHAI KINGFA SCI & TECH CO (CN)
SHANGHAI KINGFA SCI & TECH CO (CN)
International Classes:
C08L23/14; C08G12/32; C08K5/3417; C08K9/10
Domestic Patent References:
| WO2014057858A1 | 2014-04-17 |
Foreign References:
| CN101225296A | 2008-07-23 | |||
| CN105524399A | 2016-04-27 |
Attorney, Agent or Firm:
GUANGZHOU WISON I.P. LAW FIRM (CN)
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