Patent ID: 8556993

Claim:
A laundering process for brightening a polyester or polyester/cotton textile, which is characterized by a) preparing a composition by contacting a free fluorescent whitening agent with a cationic polymer and an anionic surfactant b) treating said textile with the composition prepared in step a), wherein the free fluorescent whitening agent is a compound selected from the group of formulae (4) to (27) and the cationic polymer is selected from the group consisting of a liquid dispersion cationic acryl polymer, a cationic homopolymer formed from 2-propen-1-aminium, N,N-dimethyl N-2-propenyl-, chloride and cellulose, 2-hydroxyethyl 2-hydroxy-3-(trimethylammonio)propyl ether, chloride and the fluorescent whitener ranges from 1 to 10 parts by weight per 100 parts of the cationic polymer.