Polyoxymethylene polymers incorporating aldehyde scavengers

JP2025525329A5Pending Publication Date: 2026-06-22COLORMATRIX HOLDINGS INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
COLORMATRIX HOLDINGS INC
Filing Date
2023-06-03
Publication Date
2026-06-22

AI Technical Summary

Technical Problem

Polyoxymethylene (POM) polymers are prone to degradation, leading to formaldehyde emissions and oxidative instability, which pose safety and performance issues, particularly in applications requiring high air quality and thermal stability.

Method used

Treating POM polymers with a compound comprising amine and amide moieties attached to a saturated carbon-hydrogen main fragment, in conjunction with an aldehyde scavenger like cyanoacetamide, to reduce formaldehyde content and enhance oxidative induction time (OIT) and thermal stability.

Benefits of technology

The method significantly reduces formaldehyde emissions to 2 ppm or less and extends OIT, improving POM's thermal stability and mechanical properties, suitable for applications in automotive and other critical environments.

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Patent Text Reader

Abstract

A method for reducing the aldehyde content, extending the oxidative induction time (OIT), and / or increasing the thermal stability in a polyoxymethylene (POM) polymer comprises: (i) A compound XX comprising at least three moieties of formula (AA), each moiety (AA) comprising an amine moiety (-NH) attached ortho or meta to an amide moiety (-CONH), and each R 1 independently represent a substituent, and m is an integer of 0 to 4, and the three moieties (AA) are bonded via their respective amide nitrogen atoms to respective carbon atoms of the main fragment, which main fragment contains only carbon and hydrogen atoms and is saturated, with (ii) a compound XX, and an aldehyde scavenger selected from cyanoacetamide. TIFF2025525329000027.tif29170
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