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Применить Всего найдено 3. Отображено 3.
09-11-2016 дата публикации

Microparticles

Номер: GB0002538139A
Автор: DONALD A WELLINGS [GB], DONALD A WELLINGS, Donald A Wellings
Принадлежит:

A microparticle which comprises an acid with two or more acid groups and an organic base. The microparticle may have a particle size of 0.5-10 microns, and a molar ratio of acid groups to basic groups of 0.6-1.4:1. The acid may comprise bis-aliphatic acid, brassylic acid, sebacic acid, azelaic acid or a bis-carboxylic fatty acid in which the terminal carboxylic acids are linked by a region which is hydrophobic. The acid groups may also be separated by a saturated or unsaturated aliphatic chain; or substituted saturated, or unsaturated aliphatic chain. The organic base may comprise an aliphatic amine or an aromatic amine having a basic character or other nitrogen-containing base, one or more of an alkylated amine and an alkylated polyamine, N-methylmorpholine, N,N-dimethylaminoethanol, 4-dimethylaminopyridine, imidazole, 1-methylamidazole poly(diallyldimethylammonium chloride) (PDAC), didecylmethylammonium chloride (DDAC), dodecyldipropylenetriamine (DDPT) and poly epsilon lysine. A medical ...

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Номер записи: 1
30-06-2021 дата публикации

Microparticles

Номер: GB0002590581A
Автор: DONALD A WELLINGS [GB], DONALD A WELLINGS, Donald A Wellings
Принадлежит:

Self-assembled microparticles with a multi-lamellar structure, comprising an acid with two or more acid groups and an organic base where the molar ratio of acid to basic groups is from 0.6 to 1.4:1. The microparticle may be 0.5-10 microns in size, and the acid may comprise a bis-acid. The microparticles can be used as a particulate support and can be obtained by contacting a bis-acid and organic base in a hydrophilic solvent, wherein the acid is insoluble/sparingly soluble, and the base is soluble. Preferably, the hydrophilic solvent comprises an aqueous solution or a water-in-oil emulsion. The acid can comprise a bis-carboxylic fatty acid with terminal carboxylic acids linked by a hydrophobic region. The acid groups may also be separated by a saturated or unsaturated aliphatic chain which can be substituted. Preferably, the acid comprises brassylic acid, sebacic acid and/or azelaic acid. The base may comprise an aliphatic amine or an aromatic amine, any nitrogen-containing base, one or ...

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Номер записи: 2
24-11-2021 дата публикации

Microparticle composition and use thereof

Номер: GB0002595387A
Автор: DONALD A WELLINGS [GB], DONALD A WELLINGS, Donald A Wellings
Принадлежит:

A personal care or home care product comprising a personal care or home care base composition and a particulate component comprising a self-assembled microparticle comprising an acid having two or more acid groups and an organic base and the molar ratio of acid groups to basic groups may be 0.6 to 1.4:1. The microparticles may be 0.5-10 microns in size. Also claimed is a personal care or home care product comprising a macroporous material formed from the self-assembled microparticles described herein. The microparticles may be obtained by contacting the acid and base in a hydrophilic solvent wherein the acid is insoluble or sparing soluble in the solvent and the base is soluble in the solvent. The microparticles may comprise a bis acid, e.g. bis-carboxylic acid in which terminal carboxylic acids are linked by a hydrophobic region such as brassylic acid, sebacic acid or azelaic acid. The base may be a nitrogen containing base such as N-methylmorpholine, N,N-dimethylaminoethanol, 4-dimethylaminopyridine ...

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Номер записи: 3