C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 3/37 (2006.01) C11D 1/72 (2006.01) C11D 1/83 (2006.01) C11D 11/00 (2006.01)
Patent
CA 2227776
The invention relates to use, in a plastics cleaning composition comprising nonionic surfactant, of a water soluble anionic polymer as an agent to retard the propagation of surface cracks and provides a method for cleaning plastics surfaces which comprises the step of treating the surface with a cleaning composition of pH 2-10, comprising: a) 1-30 wt.% nonionic surfactant, b) 0.005- 5 wt.% of a water soluble, anionic polymer having an average molecular weight less than 1,000,000, wherein, the ratio of polymer:nonionic is 0.1:1 or less.
L'invention concerne l'utilisation, dans une composition de nettoyage de plastique contenant un tensioactif non ionique, d'un polymère anionique hydrosoluble servant à retarder la propagation des fissures de surface ainsi qu'un procédé de nettoyage de surfaces en plastique consistant à traiter la surface au moyen d'une composition de nettoyage de pH 2 à 10, constituée de: a) 1 à 30 % d'un tensioactif non ionique, b) 0,005 à 5 % d'un polymère anionique hydrosoluble de masse moléculaire moyenne inférieure à 1 000 000, le rapport polymère/tensioactif non ionique étant inférieur ou égal à 0,1:1.
Leach Matthew James
Newbold Geoffrey
Sharples Martin
Turner Jane Elizabeth
Bereskin & Parr
Plc Unilever
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