Global patent index - EP 1047372 A1

EP 1047372 A1 2000-11-02 - STABLE OIL-IN-WATER EMULSION, METHOD FOR PREPARING SAME AND USE IN COSMETICS AND DERMATOLOGY

Title (en)

STABLE OIL-IN-WATER EMULSION, METHOD FOR PREPARING SAME AND USE IN COSMETICS AND DERMATOLOGY

Title (de)

STABILE OEL-IN-WASSER EMULSION, IHR VERFAHREN ZUR HERSTELLUNG UND IHRE VERWENDUNG IN DER KOSMETIK UND DERMATOLOGIE

Title (fr)

EMULSION HUILE-DANS-EAU STABLE, SON PROCEDE DE FABRICATION ET SON UTILISATION DANS LES DOMAINES COSMETIQUE ET DERMATOLOGIQUE

Publication

EP 1047372 A1 (FR)

Application

EP 99946286 A

Priority

  • FR 9902361 W
  • FR 9812622 A

Abstract (en)

[origin: FR2784310A1] The emulsion consists of oil phase, in form of globules dispersed in aqueous phase. Oil phase constitutes at least 15 wt.% per total wt. of emulsion. Aqueous phase contains at least one copolymer (C) composed of main fraction of 3-6C carboxylic acid monomer with mono-olefin unsaturation, or its anhydride, and minor fraction of acrylic acid fatty chain ester monomer; and contains no surfactant. The emulsion consists of oil phase, in form of globules of average size below 20 (preferably 0.5-15) microns dispersed in aqueous phase. Oil phase constitutes at least 15 wt.% per total wt. of emulsion. Aqueous phase contains at least one copolymer (C) composed of main fraction (80-98 wt.%) of 3-6C carboxylic acid monomer with mono-olefin unsaturation, or its anhydride, and minor fraction (2-20 wt.%, per total wt. of two monomers) of acrylic acid fatty chain ester monomer; and contains no surfactant. Independent claims are also included for: (1) The use of emulsion as claimed in treatment, protection, care and/or cleaning of skin, mucous membranes and/or hair, and/or for make-up of skin and mucous membranes, and also in production of dermatological compositions for treatment and/or protection of skin, mucous membranes and/or hair; and (2) process of making the emulsion as claimed, comprising introducing oil phase under pressure higher than critical pressure (preferably 30-350 kPa) into aqueous phase containing copolymer, through porous glass membrane having average pore size 0.1-5 (preferably 0.3-3) microns.

IPC 1-7 (main, further and additional classification)

A61K 7/00

IPC 8 full level (invention and additional information)

A61K 9/107 (2006.01); A61K 8/00 (2006.01); A61K 8/06 (2006.01); A61K 8/72 (2006.01); A61K 47/32 (2006.01); A61Q 1/00 (2006.01); A61Q 1/02 (2006.01); A61Q 5/00 (2006.01); A61Q 19/00 (2006.01); B01F 3/08 (2006.01); B01F 5/06 (2006.01); B01F 17/52 (2006.01); B01J 13/00 (2006.01); C08L 101/00 (2006.01)

CPC (invention and additional information)

A61K 8/062 (2013.01); A61K 8/8152 (2013.01); A61Q 19/00 (2013.01); A61K 2800/33 (2013.01)

Citation (search report)

See references of WO 0021491A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

FR 2784310 A1 20000414; FR 2784310 B1 20001110; BR 9915585 A 20010703; CA 2312032 A1 20000420; EP 1047372 A1 20001102; JP 2002527531 A 20020827; KR 100388692 B1 20030625; WO 0021491 A1 20000420

INPADOC legal status

2003-08-06 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Effective date: 20030610

2003-05-21 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030403

2000-12-20 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001020

2000-11-02 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE