Dimethylaminoethyl methacrylate copolymer

A dimethylaminoethyl methacrylate copolymer with controlled molecular weight and polydispersity index addresses the supply and stability issues of poly-OXEMA, ensuring stable and fast-drying traffic paints.

WO2026111860A1PCT designated stage Publication Date: 2026-05-28ROHM & HAAS CO
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Patent Information

Application Number
PCT/US2025/052883
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-11-25
Filing Date
2025-10-28
Publication Date
2026-05-28

AI Technical Summary

Technical Problem

Existing traffic paint formulations using poly-OXEMA suffer from a shortage of supply and poor shelf stability when using DMAEMA-MAA copolymers as cure additives.

Method used

A copolymer with structural units of dimethylaminoethyl methacrylate and an acid monomer, having a specific molecular weight range and polydispersity index, is formulated to provide improved shelf stability and rapid cure speed, using an aqueous dispersion process.

Benefits of technology

The copolymer achieves enhanced shelf stability and rapid curing properties, maintaining low viscosity and acceptable dry times in traffic paint formulations.

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Abstract

The present invention is a composition comprising an aqueous dispersion of a copolymer with structural units of dimethylaminoethyl methacrylate and an acid functionalized monomer, wherein the copolymer has a number average molecular weight in the range of from 15,000 g / mol to 35,000 g / mol, and a polydispersity in the range of from 1.8 to 3.0. The composition of the present invention is useful as an additive that provides improved shelf stability for binders suitable for traffic paint formulations.
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Citation Information

Patent Citations

  • Wear-resistant coating composition and method for producing a coating

    EP1170340A1

  • Waterborne traffic paints having improved fast dry characteristic and method of producing traffic markings therefrom

    US5861188A