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1. (WO1992009635) METHYL PYRROLIDINONE CHITOSAN, PRODUCTION PROCESS AND USES THEREOF
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/009635 International Application No.: PCT/EP1991/002168
Publication Date: 11.06.1992 International Filing Date: 18.11.1991
IPC:
A61K 8/73 (2006.01) ,A61K 47/36 (2006.01) ,A61L 15/28 (2006.01) ,A61L 26/00 (2006.01) ,A61L 27/34 (2006.01) ,C08B 37/08 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
K
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
8
Cosmetics or similar toilet preparations
18
characterised by the composition
72
containing organic macromolecular compounds
73
Polysaccharides
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
K
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
47
Medicinal preparations characterised by the non-active ingredients used, e.g. carriers, inert additives
30
Macromolecular compounds
36
Polysaccharides; Derivatives thereof
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
L
METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
15
Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
16
Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
22
containing macromolecular materials
28
Polysaccharides or their derivatives
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
L
METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
26
Chemical aspects of, or use of materials for, liquid bandages
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
L
METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
27
Materials for prostheses or for coating prostheses
28
Materials for coating prostheses
34
Macromolecular materials
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
B
POLYSACCHARIDES; DERIVATIVES THEREOF
37
Preparation of polysaccharides not provided for in groups C08B1/-C08B35/110; Derivatives thereof
08
Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
Applicants:
MERCK PATENT GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG [DE/DE]; Frankfurter Str. 250 D-64271 Darmstadt, DE (AllExceptUS)
MUZZARELLI, Ricardo [IT/IT]; IT (UsOnly)
Inventors:
MUZZARELLI, Ricardo; IT
Priority Data:
642 A/9026.11.1990IT
Title (EN) METHYL PYRROLIDINONE CHITOSAN, PRODUCTION PROCESS AND USES THEREOF
(FR) PROCEDE DE PRODUCTION ET UTILISATIONS DU CHITOSANE DE PYRROLIDINONE DE METHYLE
Abstract:
(EN) Modified chitins and chitosans with recurring units of formula (I), wherein R denotes -NH2, -NHCOCH3 and R', with R' being present in at least 30 % of the recurring units, characterized in that R' represents a group of formula (II) in a proportion of at least 90 %. Due to their favourable biological properties, these materials are advantageously useful in medical and cosmetical applications.
(FR) Chitines et chitosanes modifiées ayant des unités récurrentes de la formule (I) où R représente -NH2, -NHCOCH3 et R', R' étant présent dans au moins 30 % des unités récurrentes, et qui se caractérise par le fait que R' représente un groupe de la formule (II) dans une proportion d'au moins 90 %. En raison de leurs bonnes propriétés biologiques, ces matériaux sont très utiles en médecine et en cosmétologie.
Designated States: AU, CA, CS, HU, JP, KR, SU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
CZPV1992-2305EP0512095ES2084838US5378472JPH05503733CA2074517
DE000069118683KR1019927003132AU1991089566