Microcapsules, their use and processes for their manufacture

Details Microcapsules, their use and processes for their manufacture Microcapsules, their use and processes for their manufacture

B - Operations, Transporting

01

J

B01J 13/14 (2006.01) D06M 23/12 (2006.01)

Patent

CA 2669325

A microcapsule comprising a core containing a hydrophobic liquid or wax and a polymeric shell formed from: i) 1 to 20% by weight of polymerisable silane compound, ii) 1 to 94% by weight of hydrophobic mono functional ethylenically unsaturated monomer, iii) 5 to 98% by weight of polyfunctional ethylenically unsaturated monomer, and iv) 0 to 60% by weight of other mono functional monomer(s), wherein components (i), (ii), (iii) and (iv) total 100%, and in which the microcapsule also includes a hydrophilic polymer which is covalently bonded to the microcapsule. The invention includes a process for the manufacture of particles and the use of particles in artic les, such as fabrics, and coating compositions, especially for textiles.

La présente invention a trait à une microcapsule comprenant un cAEur constitué d'un liquide ou d'une cire hydrophobe et une enveloppe polymérique constituée de : i) 1 à 20 % en poids d'un composé silane polymérisable, ii) 1 à 94 % en poids d'un monomère hydrophobe monofonctionnel éthyléniquement insaturé, iii) 5 à 98 % en poids d'un monomère polyfonctionnel éthyléniquement insaturé, et iv) 0 à 60 % en poids d'au moins un autre monomère monofonctionnel, les composants (i), (ii), (iii) et (iv) représentant au total 100 % de l'enveloppe, et la microcapsule comprenant également un polymère hydrophile lié par une liaison covalente à la microcapsule. L'invention comprend un procédé de fabrication de particules et l'utilisation des particules dans des produits, tels que des tissus et des compositions d'enrobage en particulier destinées aux produits textiles.

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