Patent · US Active

Hydrophilic silica/polymer blend

US12201710B2 · kind B2 · utility

0Cited by

4References

17Claims

0Family size

Assignees

DOW GLOBAL TECHNOLOGIES LLC · US
Rohm and Haas Company · US

Inventors

Luqing Qi · Midland, US
Liang Chen · Midland, US
Lu Bai · Nanhu, CN
Lyndsay M. Leal · Spring City, US
David M. Meunier · Midland, US
Yunshen Chen · Lexington, US
Fanwen Zeng · Montgomery, US

Key dates

Filing date	Apr 16, 2020
Grant date	Jan 21, 2025
Priority date	—
Expiry date	Nov 12, 2041

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/48
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A hydrophilic silica/polymer blend is provided comprising (a) a hydrophilic silica powder; and (b) a thickening polymer powder, comprising (i) structural units of C4-8 alkyl (meth)acrylate monomer; (ii) structural units of (meth)acrylic acid monomer; (iii) structural units of (methoxy) poly(ethylene glycol) (meth)acrylate monomer; and (iv) structural units of multiethylenically unsaturated monomer; wherein the weight ratio of hydrophilic silica powder to thickening polymer powder in the hydrophilic silica/polymer blend is 1:9 to 9:1. Also provided are personal care compositions containing same and methods of using same.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.