Fast-curing modified siloxane compositions

A fast-curing modified siloxane composition comprising:

• an alkoxy- or silanol-functional silicone intermediate;
• at least one amine reactive ingredient selected from the group consisting of aceto acetate-functional ingredients, acrylate-funetional ingredients, and mixtures thereof;
• an epoxy-functional ingredient;
• a curing agent selected from the group consisting of amines, aminosilanes, ketimines, aldimines and mixtures thereof, and
• water,
• wherein the amine reactive ingredient is comprises an acetoacetate- functional ingredient having the general chemical formula
• R[OCOCH2COCH2R21]a
• where R20 is selected from the group consisting of acrylic, polyester, polyether, and urethane polymers and diluents, and any hydroxy-fianetional oligomer or polymer capable of being functionalized with [OCOCH2COCH2R21], where ″a ″is from 1 to 10, and where R21 is selected from the group consisting of hydrogen, and carbon-containing groups having up to about 6 carbon atoms, wherein the acetoacetate-frmnctional amine reactive ingredient undergoes a cross-linking reaction with the curing agent.

A fast-curing modified siloxarie composition prepared by combining in the presence of water:

• an alkoxy- or silanol-functional silicone intermediate;
• with
• an acetoacetate-functional ingredient;
• an epoxy-functional ingredient;
• and a curing agent selected from the group consisting of arnines, aminosilanes, ketimines, aldirnines and mixtures thereof;
• wherein upon combining the ingredients, the acetoacetate-functional ingredient and the epoxy-functional ingredient react with the curing agent and the alkoxy- or silanol-functional silicone intermediate to form a fully cured protective film having a fully cross- linked enamine polysiloxane chemical structure,
• wherein the acetoacetate-funetional ingredient has comprises a compound having the general chemical formula
• R20[OCOCH2COCH2R21]a
• where R20 is selected from the group consisting of acrylic, polyester, polyether, and urethane polymers and diluents, and any hydroxy-funetional oligomer or polymer capable of being functionalized with [OCOCH2COCH2R21], where ″a″is from 1 to 10, and where R21 is selected from the group consisting of hydrogen, and carbon-containing groups having up to about 6 carbon atoms.

A fast-curing modified siloxane composition prepared by combining in the presence of water:

• an alkoxy- or silanol-funetional silicone intermediate;
• with
• an acetoacetate-funetional ingredient;
• an epoxy-functional ingredient;
• and a curing agent selected from the group consisting of amines, aminosilanes, ketimines, aldimines and mixtures thereof;
• wherein upon combining the ingredients, the acetoacetate-functional ingredient and the epoxy-functional ingredient react with the curing agent and the alkoxy- or silanol-functional silicone intermediate to form a fully cured protective film having a fully cross-linked enamine polysiloxane chemical structure,
• wherein the acetoacetate-functional polymer is an acrylic polymer, and wherein the chemical structure comprises a fully cross-linked acrylic epoxy enamine polysiloxane.

A fast-curing modified siloxane composition prepared by combining in the presence of water:

• an alkoxy- or silanol-flinctional silicone intermediate;
• with
• an acetoacetate-fhnctional ingredient;
• an epoxy-functional ingredient;
• and a curing agent selected from the group consisting of amines, amjnosilanes, ketimines, aldimines and mixtures thereof;
• wherein upon combining the ingredients, the acetoacetate-functional ingredient and the epoxy-functional ingredient react with the curing agent and the alkoxy- or silanol- functional silicone intermediate to form a fully cured protective film having a fully cross-linked enamine polysiloxane chemical structure,
• wherein the curing agent further includes a secondary amine.

A fast-curing modified siloxane composition prepared by combining in the presence of water:

• an alkoxy- or silanol-functional silicone intermediate;
• with
• two acetoacetate-functional ingredients, one of which includes an acrylic polymer;
• an epoxy-functional ingredient;
• and a curing agent selected from the group consisting of amines, aminosilanes, ketimines, aldimines and mixtures thereof;
• wherein upon combining the ingredients, the acetoacetate-functional ingredient and the epoxy-functional ingredient react with the curing agent and the alkoxy- or silanol-funetional silicone intermediate to form a fully cured protective film having a frilly cross-linked enamine polysiloxane chemical structure.

A fast-curing modified siloxane composition prepared by combining in the presence of water:

• about 5 to 50 percent by weight an alkoxy- or silanol-functional silicone intermediate;
• with
• 5 to 30 percent by weight of an acetoacctate-fhnctional ingredient;
• 1 to 50 percent by weight of an epoxy-functional ingredient;
• and
• 1 to 30 percent by weight of a curing agent selected from the group consisting of amines, aminosilanes, ketimines, aldimines and mixtures thereof based on the total weight of the composition;
• wherein upon combining the ingredients, the aceto acetate- functional ingredient and the epoxy-functional ingredient react with the curing agent and the alkoxy- or silanol-functional silicone intermediate to form a fully cured protective film having a fully cross-linked enamine polysiloxane chemical structure.

A method of making a fully cross-linked modified epoxy polysiloxane comprising the steps of:

• combining:
• 5 to 50 percent by weight of an alkoxy- or silanol-functional silicone intermediate;
• with 5 to 30 percent by weight of an amine reactive ingredient selected from the group consisting acetoacetate-functional ingredients, acrylate-functional ingredients, and mixtures thereot and 1 to 50 percent by weight of an epoxy- functional ingredient;
• and curing the combined ingredients in the presence of water by adding to them:
• 1 to 30 percent by weight of a curing agent selected from the group consisting of amines, aminosilanes, ketimines, aldimines and mixtures thereof based on total weight of the composition;
• wherein during the curing step, the amine reactive ingredient and the epoxy- functional ingredient each react with the curing agent, and the silicone intermediate reacts with the amine reactive ingredient reaction product to provide the fully cross-linked modified epoxy polysiloxane.

A fast-curing modified siloxane protective coating composition comprising:

• an alkoxy- or silanol-functional silicone intermediate;
• at least one acetoacetate-functional amine reactive ingredient;
• an epoxy-functional ingredient;
• a curing agent selected from the group consisting of amines, aininosilanes, ketimines, aldimines and mixtures thereof;
• water;
• and
• a silane or polysiloxane having the general formula
• where R16, R17 and R18 are independently selected from the group consisting of hydrogen and alkyl, aryl, cycloalkyl, alkoxy, aryloxy, hydroxyalkyl, alkoxyalkyl and hydroxyalkoxyalkyl groups containing up to six carbon atoms, and where R19 is selected from the group consisting of hydrogen and alkyl and aryl groups having up to six carbon atoms) and tin;;
• is in the range of from 1 to 5,
• wherein the acetoacetate-functional amine reactive ingredient undergoes a cross-linking reaction with the curing agent,
• wherein the combined composition reacts to form a fully cross-linked enamine polysiloxane structure.

A fast-curing modified siloxane protective coating composition comprising:

• an alkoxy- or silanol-functional silicone intermediate;
• at least one acetoacetate-functional amine reactive ingredient;
• an epoxy-functional ingredient;
• a curing agent selected from the group consisting of amines, aminosilanes, ketimines, aldimines and mixtures thereof;
• water;
• and
• a silane or polysiloxane, including a compatiblizing composition formed by adducting an amount of the combined silane, acetoacetate-functional ingredient, epoxy-functional ingredient, and curing agent,
• wherein the acetoacetate-fiinctional amine reactive ingredient undergoes a cross-linking reaction with the curing agent,
• wherein the combined composition reacts to form a fully cross-linked enamine polysiloxane structure.