C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 291/02 (2006.01) A61L 15/24 (2006.01) D21H 17/34 (2006.01)
Patent
CA 2205916
The present invention is directed to a latex composition comprising: a liquid phase selected from water, water-miscible solvents, or mixtures thereof; and from about 5 to about 50 % by weight of latex particles dispersed in the aqueous phase. The latex particles comprise an elastomeric hydrophobic core and an outer hydrophilic shell attached to the core. The core comprises a polymer comprising one or more elastomer forming monomeric units and one or more carboxylate containing monomeric units. The shell comprises moieties L-X, wherein L comprises a hydrophobic hydrocarbyl group containing one or more unsaturated bonds and X is a hydrophilic group. The present invention is also directed to a process for making such a latex composition. The present invention is also directed to a paper sheet and an absorbent structure (e.g., a disposable diaper) comprising such a latex composition.
Composition de latex comprenant une phase aqueuse constituée d'eau, de solvants miscibles dans l'eau ou de mélanges de ceux-ci; et environ 5 à 50 % en poids de particules de latex dispersées dans la phase aqueuse. Les particules de latex comprennent un noyau élastomère hydrophobe et une enveloppe extérieure hydrophile rattachée au noyau. Le noyau contient un polymère qui comprend un ou plusieurs motifs monomères formant des élastomères et un ou plusieurs motifs monomères contenant du carboxylate. L'enveloppe contient des fractions L-X, où L comprend un groupe hydrocarbyle hydrophobe comportant une ou plusieurs liaisons insaturées et où X désigne un groupe hydrophile. Est également présenté un procédé de fabrication d'une telle composition. L'invention concerne en outre une feuille de papier et une structure absorbante (une couche jetable, par exemple) contenant une telle composition.
Sim & Mcburney
The Procter & Gamble Company
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