Full-bio-based aryl diamine flame retardant and full-bio-based aryl diamine polymide film
Disclosed in the present invention are a full-bio-based aryl diamine flame retardant and a full-bio-based aryl diamine polyimide thin film. The structures thereof are respectively as shown in formula (I) and formula (II). A preparation method therefor comprises: subjecting a lignin oxidative depolym...
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Main Authors | , , , , , , |
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Format | Patent |
Language | English |
Published |
09.10.2024
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Subjects | |
Online Access | Get full text |
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Summary: | Disclosed in the present invention are a full-bio-based aryl diamine flame retardant and a full-bio-based aryl diamine polyimide thin film. The structures thereof are respectively as shown in formula (I) and formula (II). A preparation method therefor comprises: subjecting a lignin oxidative depolymerization monomer compound and a bio-based ketone compound to an aldol condensation reaction to obtain a coupled bisphenol compound, and reacting the coupled bisphenol compound to a phenolic hydroxyl amination reaction to obtain a bio-based aryl diamine; then subjecting the obtained diamine compound and a 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide to an addition reaction to introduce an aromatic ring structure thereto, and subjecting the product thereof and phenyl dichlorophosphate to a solution polycondensation reaction to obtain a full-bio-based aryl diamine flame retardant; and subjecting the obtained diamine compound and a diacid anhydride compound to a condensation reaction to obtain a solution containing a polyamide acid compound. The product of the present invention can be used for replacing a traditional diamine flame retardant to prepare a flame-retardant polyurethane rigid foam and a flame-retardant phenolic foam, and for replacing a traditional diamine to prepare a polyimide thin film. |
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Bibliography: | Application Number: GB20240009978 |