Particles containing absorbed liquids and methods of making them
OwnerJeremy Nicholas Ness, Pamela Virginia Irving +3inventors
InventorsJeremy Nicholas Ness, Pamela Virginia Irving, Marcus James Goodall, Kenneth Charles Symes, Bryan David Grey
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Abstract
Perfume is absorbed within organic polymer particles which have a further polymer at their exterior. The further polymer incorporates free hydroxyl groups and serves to promote deposition of the particles from a wash or rinse liquor. The further polymer may be part of an encapsulating shell, but more conveniently is used as a stabiliser during polymerisation of the particles. Highly hydrolysed polyvinyl alcohol is preferred.
Claims22
Water-insoluble solid particles containing a solid organic polymer core, the core having attached at its exterior a solid further polymer to form an at least partial coating on said core which is permeable to liquid, said further polymer incorporating tree hydroxy groups, and being present quantity which is no more than 25% of the weight of the particles, with liquid absorbed in said particle.
Dependencies are inferred from the claim text.