Use of compositions comprising destructurized starch in a complexed form as abrasives and/or structuring agents

Patent metadata

Field	Value
Publication number	US-12514808-B2
Application number	US-202217709584-A
Country	US
Kind code	B2
Filing date	Mar 31, 2022
Priority date	Jan 19, 2016
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

This invention relates to the use of microgranules comprising destructurized starch in a complexed form as abrasive and/or structuring agents in cosmetic, dermatological, detergent and cleansing formulations.

First claim

The invention claimed is:

1 . A composition selected from the group consisting of cosmetic, dermatological, detergent and cleansing formulations comprising, as abrasive and/or structuring agents, from 1 to 20% by weight, with respect to the total weight of the composition, of microgranules comprising destructurized starch in a complexed form with polymers containing hydrophilic groups intercalated with hydrophobic sequences, said microgranules being in the form of spheroidal particles of diameter between 1 and 100 μm, wherein the microgranules comprise, with respect to the total of components i-iv:
i. 30-80% of destructurized starch;
ii. 20-70% of polymers containing hydrophilic groups intercalated with hydrophobic sequences;
iii. 0-25% of plasticizers; and
iv. 0-50% of water; and

wherein any water in the microgranules is that naturally present in the starch and wherein the microgranules have a biodegradability of at least 55% determined according to the Standard EN 13432.

2 . The composition according to claim 1 , wherein said polymers containing hydrophilic groups intercalated with hydrophobic sequences are selected from:
polyvinyl alcohol having a degree of hydrolysis of 10 to 100%; vinyl alcohol/vinyl acetate block copolymers; polyvinyl acetate in dry form and in a form emulsified in water; copolymers of ethylene with vinyl alcohol, vinyl acetate, acrylic acid, methacrylic acid, crotonic acid, itaconic acid, maleic anhydride, glycidylmethacrylate and mixtures thereof; aliphatic 6-6, 6-9 or 12 polyamides, aliphatic polyurethanes, aliphatic and aliphatic/aromatic polyesters, polyurethane/polyamide, polyurethane/polyether, polyurethane/polyester, polyamide/polyester, polyamide/polyether, polyester/polyether, polyurea/polyester, polyurea/polyether, polylactic acid, polyglycolic acid, polycaprolactone/urethane random and block copolymers, in which the molecular weight of the polycaprolactone blocks is between 300 and 3000.

3 . The composition according to claim 2 , wherein said polymers containing hydrophilic groups intercalated with hydrophobic sequences are polyvinyl alcohols having a degree of hydrolysis of between 10 and 100%.

4 . The composition according to claim 2 , wherein said polymers containing hydrophilic groups intercalated with hydrophobic sequences are vinyl alcohol/vinyl acetate block copolymers.

5 . The composition according to claim 2 , wherein said polymers containing hydrophilic groups intercalated with hydrophobic sequences are polyvinyl acetates.

6 . The composition according to claim 2 , wherein said polymers containing hydrophilic groups intercalated with hydrophobic sequences are copolymers of ethylene with vinyl alcohol and/or acrylic acid.

7 . The composition according to claim 6 , wherein said copolymers of ethylene with vinyl alcohol contain 20-50% in moles of ethylene units.

8 . The composition according to claim 6 , wherein said copolymers of ethylene with acrylic acid contain 70-99% by weight of ethylene units.

9 . The composition according to claim 1 , wherein the microgranules have a biodegradability of at least 60% determined according to the Standard EN 13432.

10 . The composition according to claim 1 , wherein the microgranules have a biodegradability of at least 70% determined according to the Standard EN 13432.

11 . The composition according to claim 1 , wherein the microgranules have a diameter between 1 and 60 μm.

12 . The composition according to claim 9 , wherein the microgranules have a diameter between 1 and 60 μm.

13 . The composition according to claim 10 , wherein the microgranules have a diameter between 1 and 60 μm.

Assignees

• Novamont Spa

Inventors

• Magistrali Paolo
• Marini Nicola
• Petrakou Ioanna

Classifications

• A61Q1/02

  Preparations containing skin colorants, e.g. pigments (preparations in powder form A61Q1/12) · CPC title

• A61K8/8129

  Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers or esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers, e.g. polyvinylmethylether · CPC title

• A61K8/345

  containing more than one hydroxy group · CPC title

• A61K8/025

  Explicitly spheroidal or spherical shape · CPC title

• C08L77/02

  Polyamides derived from omega-amino carboxylic acids or from lactams thereof (C08L77/10 takes precedence) · CPC title