Patent · US Active

Process for preparing particles which have a hydrophilic core coated with a hydrophobic polymeric layer

US9333473B2 · kind B2 · utility

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15Claims

0Family size

Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Aurélien Auger · Grenoble, FR
Olivier Poncelet · Grenoble, FR

Key dates

Filing date	Dec 23, 2014
Grant date	May 10, 2016
Priority date	—
Expiry date	Dec 23, 2034

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H21/54
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

This method of preparing particles having a hydrophilic core coated with a hydrophilic core coated with a hydrophobic polymeric layer includes the steps of: preparing an aqueous phase comprising at least one hydrophilic optical brightener or colorant; preparing an organic phase including at least one hydrophobic polymer; forming a water-in-oil inverse emulsion by adding the aqueous phase into the organic phase; forming the particles by thermal quenching of the emulsion; and isolating the particles thus obtained.

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