Method for promoting high temperature heat stability of thermoplastic polymer or compound thereof by utilizing inorganic and alkyl metallic phosphites

• Main Authors: WEN YUNHAO, LEI HUA
• Format: Patent
• Language: Chinese; English
• Published: 11.01.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention discloses a method for promoting high temperature heat stability of a thermoplastic polymer or compound thereof by utilizing inorganic and alkyl metallic phosphites. The compound of inorganic metallic phosphite and alkyl metallic phosphite is added into the raw materials; the addition of the compound is 0.1-2%, on the basis of the total weight of the thermoplastic polymer or compoundthereof; the weight ratio of inorganic metallic phosphite to alkyl metallic phosphite is at 1:(1-10); the structural formula of alkyl metallic phosphite is shown by formula (I) or (II); R is selectedfrom straight chain fat alkyl with 1-6 aryl groups or carbons and Me is selected from zinc, calcium or magnesium. According to the method disclosed by the invention, under the combined action of hightemperature and shearing force, the thermoplastic polymer or compound thereof is capable of avoiding the problems of cross-linking, decomposition, degradation, discoloration, and the like, and can maintain various properties o