Patent classifications
C
CHEMISTRY; METALLURGY
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C08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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63/00
Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
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C08G63/68
Polyesters containing atoms other than carbon, hydrogen and oxygen
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C08G63/6924
derived from polycarboxylic acids and polyhydroxy compounds
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C08G63/6926
Dicarboxylic acids and dihydroxy compounds
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C08G63/6926

High-temperature self-crosslinking-based flame-retardant anti-dripping copolyester, and preparation method therefor and application thereof
12559589 · 2026-02-24 · ·

A copolyester, comprising structural units represented by [I], [II], [III] and [IV]. The number of structural units represented by [III] is 1-99% of the number of structural units represented by [I], and the number of structural units represented by [IV] is 0-99% of the number of structural units represented by [I]. Also provided are a preparation method therefor and an application thereof. Because an introduced high-temperature self-crosslinking group and an ion group can improve the melt viscosity and the melt intensity during burning of a copolyester, and effectively enhance the char-forming capability of the copolyester, the copolyester exhibits excellent flame retardance and anti-dripping performance. The preparation process for the copolyester is mature, convenient to operate, and easy to control and apply to industrial production. ##STR00001## ##STR00002## ##STR00003## ##STR00004## ##STR00005##