Application of organic polymer material complex used as light stabilizer

Abstract

The invention discloses an application of an organic polymer material complex used as a light stabilizer; the organic polymer material complex is used according to a routine using method of an addition-type light stabilizer; the beta-dione-rare earth complex is applied as an organic polymer material light stabilizer; the beta-dione-rare earth complex has a general chemical formula of REL3-x(OH)x.mH2O; in the formula, (1) RE is a combination of one or more than one of praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), and ytterbium (Yb) with a random ratio, or mixed rare earth with above elements as main elements; (2) L represents an anion of beta-dione; (3) x=0-2, and m=0-3. The light stabilizer of the invention has the following advantages that: (1) the light stabilization efficiency is obviously superior to that of common ultraviolet ray absorbers; (2) the hear resistance is obviously higher than that of common ultraviolet ray absorbers and hindered amine light stabilizers, and is higher than that of stabilizers with a high molecular weight; (3) the tendency of a blooming phenomenon is extremely low.

Description

technical field [0001] The present invention relates to a kind of application of organic polymer material complex as light stabilizer. Background technique [0002] Most organic polymer materials, including plastics, chemical fibers, rubber, coatings, paints, adhesives, etc., will undergo photodegradation reactions and age when exposed to the eyes, manifested as discoloration, loss of luster, silver streaks, erosion, and cracks As well as deterioration of appearance and physical and mechanical properties such as tensile strength, impact strength, elongation and electrical properties. Therefore, organic polymer materials used outdoors must be treated with light stabilization, and some polymers that are particularly sensitive to ultraviolet light, such as polypropylene, and even products for indoor applications also need to be treated. The photoaging of organic polymer materials can be suppressed by adding light stabilizers. Currently developed organic high [0003] Molecu...

AI Technical Summary

Problems solved by technology

It is a pity that they all have their own shortcomings: the light shielding agent has good protective effect and low price, but it has light-shielding properties and is only suitable for opaque materials; At the same time, because it is a pure organic compound, it also has disadvantages such as volatile, blooming, migration, and extraction, which not only affects the durability of its performance, but also causes pollution to the environment; the excited state quencher has high photostability and is volatile. Low resistance, low blooming and migration, and resistance to extraction, but deep color, high toxicity and environmental pollution, will decompose and change color during high temperature processing, and have an antagonistic effect on sulfur-containing additives; free radical scavenger has light color and high photostability, but Because of its alkalinity, it has antagonism with acidic substrates, additives and environmental substances, and like ultraviolet absorbers, because it is a pure organic compound, it also has disadvantages such as volatilization, blooming, migration, extraction, etc.

[0004] In 1996, there were more than 1,100 patents on hindered amine light stabilizers), but there were not many achievements in industrialized production and better promotion and application (the more successful ones were several high-molecular-weight hindered amines, such as T'inuvin 622, Chimassorb 944 and Cyasorb UV-3346)