Plastic brightening agent

Abstract

The invention relates to a brightening agent, especially to a plastic brightening agent. The plastic brightening agent comprises, by mass, 10 to 20 parts of waterborne polyurethane, 40 to 60 parts of paraffin, 30 to 50 parts of N,N'-ethylidenebisoleamide, 20 to 40 parts of N,N'-ethylenebisoleamide, 5 to 10 parts of polyoxyethylene amide, 12 to 18 parts of a cosolvent and 150 to 180 parts of a solvent. The plastic brightening agent provided by the invention has a high molecular weight and a melting point of 200 DEG C; and the plastic brightening agent can form a film on the surface of a plastic product so as to improve the brightness and smoothness of the surface of the plastic product. Compared with conventional plastic brightening agents, the plastic brightening agent provided by the invention has the following advantages: 1, brightening efficiency is high and long-lasting, and the plastic brightening agent cannot be easily wiped and forms the film on the surface of the plastic product; 2, the plastic product is not reduced in its physical properties and secondary processability; 3, the plastic brightening agent has excellent thermal and chemical stability and is not decomposed and not volatile during processing; 4, the plastic brightening agent does not corrode equipment or contaminate products; and 5, the plastic brightening agent is nontoxic.

Description

technical field [0001] The invention relates to a brightener, especially a plastic brightener. Background technique [0002] At present, all kinds of glazing agents produced in China are wax-based liquid (solvent type). Wax-based paste glazing agents do not change the properties of paraffin wax. Although they can play a polishing role, the thickness of the coating film is uneven, and the closing temperature has a great influence , easy to fall off, crack, high viscosity, poor durability, the film is easy to attach dust, fingerprints, laborious to use, and poor smoothness. [0003] Chinese Invention Patent Application Publication No. 88102840.1 discloses a multifunctional brightener, which is suitable for wiping various smooth surfaces such as various instruments, meters, furniture, utensils, glass, plastics, leather, etc. It is mainly based on silicone oil, stearin Supplemented by acid and paraffin, add appropriate amount of Tween, Span and emulsifier, and polymerize at a c...

AI Technical Summary

Problems solved by technology

But, the multifunctional brightener cost of this invention is higher, and preparation is not easy