US 2019/0160001 A1 · COVALENT TREATMENT FOR KERATIN-CONTAINING MATERIALS

Abstract

Disclosed are methods of grafting monomeric and polymeric materials on keratin-containing material to provide a covalent coating on keratin-containing material. A mixture comprising a reducing agent is applied to the keratin-containing material sample. The keratin-containing material sample then comprises a plurality of free thiol groups. A monomer is applied to the keratin-containing material sample. The free thiol groups react with the monomer to form a plurality of covalent bonds between the free thiol groups and the monomers. The reducing agent and the monomer can be applied separately, semi-simultaneously, or simultaneously. The disclosed methods can be carried out with or without catalyst. The disclosed methods can be carried out with or without an additive.

Claims31

Dependent claims

A method for treating a keratin-containing material, comprising:

i) providing a keratin-containing material sample comprising a plurality of disulfide bonds;
ii) applying to the keratin-containing material sample for a period of time a mixture, comprising a reducing agent in a concentration of about 0.1% by weight to about 15% by weight, thereby producing a reduced keratin-containing material sample, wherein the reduced keratin-containing material sample comprises a plurality of free thiol groups;
and
iii) applying a monomer to the reduced keratin-containing material sample, wherein the monomer is selected from the group consisting of an acrylate, a methacrylate, a monomer comprising a vinyl group, a monomer comprising an alkyne group, and a monomer comprising a maleimide group, thereby forming a plurality of covalent bonds between the free thiol groups and the monomers.

1 more element

A method for treating a keratin-containing material, comprising:

i) providing a keratin-containing material sample comprising a plurality of disulfide bonds;
ii) applying to the keratin-containing material sample for a period of time a mixture, comprising a reducing agent in a concentration of about 0.1% by weight to about 15% by weight and a catalyst, wherein the keratin-containing material sample comprises a plurality of free thiol groups;
and
iii) applying a monomer to the keratin-containing material sample, wherein the monomer is selected from the group consisting of an acrylate, a methacrylate, a monomer comprising a vinyl group, a monomer comprising an alkyne group, and a monomer comprising a maleimide group, thereby forming a plurality of covalent bonds between the free thiol groups and the monomers.

1 more element

A method for treating a keratin-containing material, comprising:

i) providing a keratin-containing material sample comprising a plurality of disulfide bonds;
and
ii) applying to the keratin-containing material sample for a period of time a mixture, comprising a reducing agent in a concentration of about 0.1% by weight to about 15% by weight, and a monomer;
wherein the monomer is selected from the group consisting of an acrylate, a methacrylate, a monomer comprising a vinyl group, a monomer comprising an alkyne group, and a monomer comprising a maleimide group, thereby forming a plurality of free thiol groups which react with the monomer to form a plurality of covalent bonds between the free thiol groups and the monomers.

1 more element

Dependencies are inferred from the claim text.

Covalent treatment for keratin-containing materials

Life of this patent

Covalent treatment for keratin-containing materials

Life of this patent

Abstract

Claims31