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| Number | Title | Issue Date |
| 4845204 | Cosmetic compositions on the basis of alkyl-hydroxypropyl-substituted chitosan derivatives, new chitosan derivatives and processes for the production thereof New alkyl-hydroxypropyl-chitosans of the formula I (m=0-0.6; n=0.5-10; q=0.5-4; p=50-5000; R1 =acetyl; ##STR1## R3 =C1 -C6 -alkyl) and their salts with organic or inorganic acids. The invention is directed, in a... | 07/04/1989 |
| 4840941 | Method for inhibiting infection of human T-cells Method of treatment of diseases caused by retroviruses which comprises administering therapeutically effective amount of a natural or synthetic oligo- or polysaccharide having at least one S-oxoacid group attached to the saccharic carbon atom through a li... | 06/20/1989 |
| 4835265 | Substituted and crosslinked glucans, process and intermediates for preparing them and use thereof Glucans substituted by reacting oxo acids with the amino groups of a chitosan or of a polyglucosamine, reducing the imines thus formed and crosslinking the thus obtained compounds to yield gels having high adsorbing power and interaction selectivity with ... | 05/30/1989 |
| 4835266 | Cosmetic compositions based upon n-hydroxypropyl-chitosans, new n-hydroxypropyl-chitosans, as well as processes for the production thereof Cosmetic compositions are disclosed, for the treatment of skin or hair, with a content of new N-hydroxypropyl-chitosan derivatives, composed of (a) 4 to 40 Mol-% units of Formula (I) ##STR1## and (b) 60 to 96 Mol-% units of Formula (II) ##STR2##... | 05/30/1989 |
| 4833238 | High strength fibers from chitin derivatives High tenacity chitin acetate/formate and chitosan acetate/formate fibers and the process for making such fibers are disclosed.... | 05/23/1989 |
| 4833237 | Process for producing granular porous chitosan A process for producing granular porous chitosan of extremely uniform particle size and having uniform fine pores on the spherical surface and cut cross sectional face. The process comprises dissolving a low molecular weight chitosan into an aqueous acidi... | 05/23/1989 |
| 4826826 | Methylated chitosans and their use for the preparation of pharmaceutical compositions Methylated chitosans are used for the preparation of pharmaceutical compositions having improved laxative properties over commonly used laxative. Said products are advantageouisly employed also in the preparation of ophtalmic solutions.... | 05/02/1989 |
| 4822598 | Cosmetic agent on the basis of quaternary chitosan derivatives, novel quaternary chitosan derivatives as well as processes for making same The invention relates to cosmetic agents for treating of hairs or the skin which is characterized by a content of novel quaternary chitosan derivatives of the formula (m=0-0.5; n=0-6; q=0.005-3.0; p=10-50,000; R1 =acetyl; R2 =--CH | 04/18/1989 |
| 4810784 | Process for covalent coupling for the production of conjugates, and products hereby obtained A process to produce by covalent binding conjugates of a substance containing a 2-amino-2-deoxyglycopyranosyl residue the NH2 -function of which in its most stable conformation is equatorially oriented, and a substrate containing a primary amin... | 03/07/1989 |
| 4810695 | Chitosan derivatives in the form of coordinated complexes with ferrous ions Chitosan derivatives in the form of coordinated complexes with ferrous ions in which coordinated bonds are established between the ferrous ion and the amino group and hydroxyl group present respectively in position 2 and position 3 of the chitosanglucosam... | 03/07/1989 |
| 4808707 | Chitosan alginate capsules The permeability of the walls of chitosan alginate capsules is adjusted by substituting with esterified alginic acid a portion of the metal alginate normally used in the fabrication of such capsules.... | 02/28/1989 |
| 4806474 | Preparation of mycelial chitosan and glucan fractions from microbial biomass Chitin from microbial biomass is converted to chitosan and recovered as an essentially glucan-free product. The method involves contacting the biomass with a strong alkali solution at a temperature within the range of from 60° to 90° C. for a period of ... | 02/21/1989 |
| 4804750 | Production of water-soluble chitin-oligomers by partial hydrolysis of chitin Tetra-N-acetyl-chitotetraose, penta-N-acetylchitopentaose and hexa-N-acetyl-chitohexaose, ones of the water-soluble chitin-oligomers, may be obtained in improved yields, when finely ground chitin is quickly and intimately mixed with a concentrated hydroha... | 02/14/1989 |
| 4786494 | Shampoo composition A shampoo composition comprises a fatty acid ester of sucrose and a nonionic cellulose ether compound in addition to a shampoo base. It provides creamy foam and results in smooth combing and prevention of hair flying.... | 11/22/1988 |
| 4780310 | Cosmetic compositions based upon N-hydroxypropyl-chitosans, new N-hyroxypropyl-chitosans, as well as processes for the production thereof Cosmetic compositions are disclosed, for the treatment of skin or hair, with a content of new N-hydroxypropyl-chitosan derivatives, composed of (a) 4 to 40 Mol-% units of Formula (I) ##STR1## and (b) 60 to 96 Mol-% units of Formula (II) ##STR2##... | 10/25/1988 |
| 4772690 | Quaternary hydroxyethyl-substituted chitosan derivatives, cosmetic compositions based thereon and processes for the production thereof Cosmetic compositions are disclosed for the treatment of hair or skin, characterized by a content of new quaternary chitosan derivatives of the formula ##STR1## Also disclosed are the new quaternary chitosan derivatives per se as well as process... | 09/20/1988 |
| 4772689 | Quaternary hydroxy-propyl-substituted chitosan derivatives, cosmetic compositions based thereon and processes for the production thereof Cosmetic compositions are disclosed for the treatment of hair or skin, characterized by a content of new quaternary chitosan derivatives of the formula... | 09/20/1988 |
| 4716223 | Method for preparing ganglioside derivatives and use thereof in pharmaceutical compositions The present invention relates to a method for preparing inner ester derivatives of gangliosides and pharmaceutical compositions containing such derivatives to be used in treating disorders of the nervous system. The pharmaceutical compositions of the pres... | 12/29/1987 |
| 4701444 | Topical pharmaceutical preparations containing chitin soluble extract There are provided pharmaceutical compositions for topical application for preventing or at least substantially decreasing infections by yeasts of the genus Candida. These are based on a chitin soluble extract (CSE), which is obtained by the extraction of... | 10/20/1987 |
| 4659700 | Chitosan-glycerol-water gel A chitosan-glycerol-water gel or gel-like membrane, useful as a carrier for medicaments to be applied to wounds, is prepared by dissolving chitosan in an acid-water-glycerol solution, which when neutralized, forms a gel upon standing.... | 04/21/1987 |
| 4619995 | N,O-carboxymethyl chitosan and preparative method therefor A novel chitosan derivative, having carboxymethyl substituents on some of both the amino and primary hydroxyl sites of the glucosamine units of the chitosan structure, is disclosed, together with methods for its preparation starting from either chitosan o... | 10/28/1986 |
| 4613665 | Process for covalent coupling for the production of conjugates, and polysaccharide containing products thereby obtained A process to produce by covalent binding conjugates of a substance containing a 2-amino-2-deoxyglycopyranosyl residue the NH2 -function of which in its most stable conformation is equatorially oriented, and a substrate containing a primary amin... | 09/23/1986 |
| 4574150 | Dry free-flowing water-soluble complexes of chitosan A process for preparing dry, free-flowing chitosan-carboxylic acid complexes is taught wherein chitosan, containing free amino groups is dispersed in selected liquids and contacted with selected carboxylic acids. The complexes are recovered by filtration,... | 03/04/1986 |
| 4536207 | Nematocidally active chitin-protein complex A chitin-protein complex is prepared from chitin-containing biological waste material such as crustacean shells. The complex is different from both chitin and chitosan, and has useful nematostatic and nematocidal activity for agricultural and horticultura... | 08/20/1985 |
| 4532321 | Microcrystalline chitin and method of manufacture A free amino microcrystalline chitin preferably in solid form is obtained. The process may involve the following steps of (1) treating particulate chitin at elevated temperature with phosphoric acid diluted with a lower aliphatic alcohol, (2) treating the... | 07/30/1985 |
| 4528283 | Cosmetic composition based upon chitosan derivatives, new chitosan derivatives as well as processes for the production thereof Cosmetic compositions useful for treatment of hair or skin contain macromolecular glyceryl-chitosan having (a) 4-40 Mol-% units of the Formula (I) ##STR1## and (b) 60-96 Mol-% units of the Formula (II) ##STR2## wherein R1, R2 | 07/09/1985 |
| 4493928 | Crosslinked chitin derivatives A novel crosslinked polymeric substance and a process for preparing the novel crosslinked polymeric substance are disclosed, the novel crosslinked polymeric substance being prepared from natural chitin or regenerated chitin and the polymeric substance hav... | 01/15/1985 |
| 4474769 | Chitosan as a contraceptive A method of contraception comprising placing in the uterine cavity a contraceptively effective amount of chitosan, advantageously in a carrier, and retaining the chitosan in the uterine cavity for a prolonged period of time to kill or inactivate mammalian... | 10/02/1984 |
| 4447562 | Amino-polysaccharides and copolymers thereof for contact lenses and ophthalmic compositions Aminopolysaccharides and copolymers thereof, primarily those of N-acetyl-D-glucosamines and derivatives and various monomers, is described.... | 05/08/1984 |
| 4436731 | Semi-synthetic chitin derivative, the process for its preparation, and therapeutic compositions which contain it as active principle A new polysaccharide constituted by units of D-glucosammonium salts, prepared from natural chitin. The new product has strong hypocholesterolemic activity.... | 03/13/1984 |
| 4424346 | Derivatives of chitins, chitosans and other polysaccharides Derivatives have been formed from chitins and chitosans in which the amine residues on the polyglucosamine have been modified to form the groups: (a) --N.dbd.CHR or --NHCH2 R (b) --NHR' (c) --NHR" and (d) --NH--CH2 CO2 H or --NH--gl... | 01/03/1984 |
| 4407978 | Polymeric polydonor complexons and method for preparation thereof Polymeric polydonor complexons having more than six sites in a structural unit are described. The complexons are of the formulae: ##STR1## wherein P is a linear or three-dimensional polymeric skeleton, x is oxygen or an ##STR2## group w... | 10/04/1983 |
| 4401807 | Shaped material comprising acylated product of mixture of chitin derivatives A shaped material is described having at least a surface layer which consists essentially of an acylated mixture of two or more kinds of chitin derivatives represented by the following formula (1): wherein R represents a carboxyalkyl group with two to four car... | 08/30/1983 |
| 4376199 | Shaped material of chitin derivatives Disclosed herein is a novel shaped material of a derivative of chitin obtainable by partially acylating or partially acid-treating a cross-linked ionic chitin derivatives, which is excellent for use as the material for capsules, as material for dialysis c... | 03/08/1983 |
| 4373096 | Crosslinked chitin derivatives A novel crosslinked polymeric substance and a process for preparing the novel crosslinked polymeric substance are disclosed, the novel crosslinked polymeric substance being prepared from natural chitin or regenerated chitin and the polymeric substance hav... | 02/08/1983 |
| 4368322 | Chitosan-glucan complex, method for its production and end uses A method for preparing a chitosan-glucan complex is disclosed, which comprises the steps of subjecting filamentary fungal masses from certain fungal species such as Allomyces, Aspergillus, Penicillium, Mucor, Phycomyces, Choanephora, Zygorrhynchus and lik... | 01/11/1983 |
| 4365050 | Amino-polysaccharides and copolymers thereof for contact lenses and ophthalmic compositions Aminopolysaccharides and copolymers thereof, primarily those of N-acetyl-D-glucosamines and derivatives and various monomers, is described.... | 12/21/1982 |
| 4363801 | Method for treating hyperbilirubinemia Methods and preparations for treating hyperbilirubinemia utilizing chitosan salts as the active agent. A method of preparing the chitosan salts for oral administration in a liquid carrier is disclosed.... | 12/14/1982 |
| 4356236 | Spherically shaped material comprising acylated product of de-N-acetylated chitin A spherically shaped material at least the surface layer of which comprises an acylated product of de-N-acetylated chitin. The spherical material is insoluble in water, acids, alkaline solutions and organic solvents. The materials can be employed to separ... | 10/26/1982 |
| 4346216 | Osmium carbohydrate complexes Osmium carbohydrate complexes prepared by reacting osmium compounds and carbohydrates and their utilization as pharmaceutical compositions for the treatment of heavy metal poisoning and arthritis in mammals. The osmium carbohydrate complexes may also be u... | 08/24/1982 |
