US 7,649,068 B2 · Polymer particles and encapsulated compositions using organoborane amine complexes

Abstract

A polymerized product is obtained from a mixture containing (i) a free radical polymerizable monomer, oligomer or polymer; (ii) an organoborane amine complex, (iii) a poor or non-solvent for the polymerized product of (i); and (iv) an amine reactive compound. The mixture may include (v) an active ingredient to be encapsulated by the polymerized product, and (vi) an optional component(s). Polymer particles are obtained by (A) forming a composition containing components (i)-(iv); (B) agitating components (i)-(iv) in the presence of oxygen to initiate polymerization, at a rate and for a time sufficient to provide a uniform dispersion and reaction of the components; (C) allowing the reaction to proceed to completion at room temperature; and (D) recovering the polymer particles by removing component (iii). The composition may include (v) the active ingredient to be encapsulated by the polymer particles.

Claims40

Dependent claims

A composition comprising a mixture or a polymerized product of a mixture comprising (i) a free radical polymerizable monomer, oligomer or polymer;

(ii) an organoborane amine complex, (iii) a poor or non-solvent for the polymerized product of (i);
and (iv) an amine reactive compound, wherein the organoborane amine complex (ii) is a complex formed between an organoborane and an amine compound, the organoborane having the formula BR″3 where R″ is a linear, branched, aliphatic, or aromatic hydrocarbon group containing 1-20 carbon atoms;
and wherein the amine compound is an organic amine compound or a silicon containing amine compound;
and the organoborane amine complex is attached to solid particles.

1 more element

A composition comprising a mixture or a polymerized product of a mixture comprising (i) a free radical polymerizable monomer, oligomer or polymer;

(ii) an organoborane amine complex, (iii) a poor or non-solvent for the polymerized product of (i);
and (iv) an amine reactive compound;
wherein the amine reactive compound (iv) is a compound having amine reactive groups, and is selected from the group consisting of mineral acids, Lewis acids, carboxylic acids, carboxylic acid derivatives, carboxylic acid metal salts, isocyanates, aldehydes, epoxides, acid chlorides, and sulphonyl chlorides;
and wherein the amine reactive groups are borne by an organosilane, an organopolysiloxane, an organotitanate, or an organozirconate.

1 more element

A method of making polymer particles comprising (A) forming a composition containing (i) a free radical polymerizable monomer, oligomer or polymer;

(ii) an organoborane amine complex, (iii) a poor or non-solvent for the polymerized product of (i);
and (iv) an amine reactive compound, wherein the amine reactive compound (iv) is a compound having amine reactive groups, and is selected from the group consisting of mineral acids, Lewis acids, carboxylic acids, carboxylic acid derivatives, carboxylic acid metal salts, isocyanates, aldehydes, epoxides, acid chlorides, and sulphonyl chlorides;
and wherein the amine reactive groups are borne by an organosilane, an organopolysiloxane, an organotitanate, or an organozirconate;
(B) agitating components (i)-(iv) of the composition in the presence of oxygen to initiate polymerization, at a rate and for a time sufficient to provide a uniform dispersion and reaction of the components;
(C) allowing the reaction to proceed to completion at room temperature;
and (D) recovering the polymer particles by removing the poor or non-solvent from the composition.

3 more elements

Dependencies are inferred from the claim text.

Polymer particles and encapsulated compositions using organoborane amine complexes

Life of this patent

Polymer particles and encapsulated compositions using organoborane amine complexes

Life of this patent

Abstract

Claims40