Dimethyl ether aerosol hair spray product

WO2026139188A1PCT designated stage Publication Date: 2026-07-02UNILEVER IP HLDG BV +2
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
UNILEVER IP HLDG BV
Filing Date
2025-12-02
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Aerosol hairsprays using Dimethyl Ether (DME) as a propellant face challenges in achieving stable formulation mixtures and optimal spray characteristics due to low VOC content, leading to unstable formulations and poor performance.

Method used

An aerosol hairspray formulation comprising 30-50% DME propellant, 30-50% water, 1-9% alcohol, and 1-5% high glass transition temperature acrylate copolymers, ensuring a stable and cohesive mixture with excellent spray and drying properties.

Benefits of technology

The formulation provides a stable, uniform mixture with fine spray characteristics and quick drying times, maintaining performance attributes while using a more environmentally friendly propellant.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure IMGF000021_0001_TABLE
    Figure IMGF000021_0001_TABLE
  • Figure IMGF000022_0001_TABLE
    Figure IMGF000022_0001_TABLE
  • Figure IMGF000025_0001_TABLE
    Figure IMGF000025_0001_TABLE
Patent Text Reader

Abstract

The invention relates to a dimethyl ether aerosol hairspray product. The hair spray product comprising: a) a pressurisable container comprising: i) a container wall which encloses a reservoir for storing a base formulation and a propellant; b) an aqueous base formulation comprising: (i) from 30 wt % to 50 wt % water, by total weight of the base formulation and propellant; (ii) from 1.0 wt % to 9 wt % alcohol, by total weight of the base formulation and propellant; and (iii) from 1.0 wt % to 5 wt % by total weight of the base formulation and propellant of one or more acrylate co-polymer hairstyling polymers with a glass transition temperature (Tg) of more than 35° C; c) 40 to 50 wt% of a dimethyl ether (DME) propellant by total weight of the base formulation and propellant; and d) a spraying device attached to the container for dispensing the base formulation from the reservoir of the container, which comprises a valve and an actuator. The invention provides a low-VOC hair spray with excellent stability, performance, spraying and drying properties.
Need to check novelty before this filing date? Find Prior Art