US 12,747,353 B2 · Silicone emulsion and uses thereof

Abstract

Aqueous silicone emulsion compositions which cure utilising titanium-based reaction products as catalysts, and a process to prepare the same and their uses, are provided. The composition comprises (a) a titanium-based reaction product; (b) one or more silicon containing compounds having at least 2 or at least 3 hydroxyl and/or hydrolysable groups per molecule; (c) one or more surfactants; and (d) water. The titanium-based reaction product (a) is obtained or obtainable from a process comprising the steps of: (i) mixing a first ingredient, an alkoxy titanium compound having from 2 to 4 alkoxy groups with a second ingredient, a linear or branched polydiorganosiloxane having at least two terminal silanol groups per molecule and a viscosity of from 30 to 300,000 mPa·s at 25° C.; (ii) enabling the first and second ingredients to react together by stirring under vacuum to form a reaction product; and (iii) collecting the reaction product of step (ii).

Claims18

Dependent claims

An aqueous silicone emulsion composition comprising:

(a) a titanium-based reaction product obtained or obtainable from a process consisting essentially of the steps of:
(i) mixing a first ingredient, which is an alkoxy titanium compound having from 2 to 4 alkoxy groups, with a second ingredient, which is a linear or branched polydiorganosiloxane having at least two terminal silanol groups per molecule and a viscosity of from 30 to 300,000 mPa·s at 25° C., and optionally, with a third ingredient, which is a polydialkylsiloxane having one terminal silanol group per molecule;
(ii) enabling the first and second ingredients and, optionally, the third ingredient, to react together by stirring under vacuum to form a reaction product;
and
(iii) collecting the reaction product of step (ii);
(b) one or more silicon containing compounds having at least 2, optionally at least 3, hydroxyl and/or hydrolysable groups per molecule;
(c) one or more surfactants;
and
(d) water.

6 more elements

A method for preparing an aqueous silicone emulsion composition, said method comprising:

preparing a titanium-based reaction product (a) from a process consisting essentially of the steps of:
(i) mixing a first ingredient, which is an alkoxy titanium compound having from 2 to 4 alkoxy groups, with a second ingredient, which is a linear or branched polydiorganosiloxane having at least two terminal silanol groups per molecule and a viscosity of from 30 to 300,000 mPa·s at 25° C., and optionally, with a third ingredient, which is a polydialkylsiloxane having one terminal silanol group per molecule;
(ii) enabling the first and second ingredients and, optionally, the third ingredient to react together by stirring under vacuum to form a reaction product;
and
(iii) collecting the reaction product of step (ii);
and
mixing the following components with the titanium-based reaction product (a) to form an emulsion:
(b) one or more silicon containing compounds having at least 2, optionally at least 3, hydroxyl and/or hydrolysable groups per molecule;
(c) one or more surfactants;
and
(d) water.

8 more elements

Dependencies are inferred from the claim text.

Silicone emulsion and uses thereof

Life of this patent

Silicone emulsion and uses thereof

Life of this patent

Abstract

Claims18