Abstract: The invention relates to a biodegradable barrier network comprising at least two macromolecular substances, one being anionic and the other one cationic. The invention also relates to applicators and kits comprising components to be used to create said biodegradable barrier network. The invention also relates to the use of said applicator or kit in therapy, such as in medicine, veterinary medicine and horticulture.

Abstract: The invention relates to a biodegradable barrier network comprising at least two macromolecular substances, one being anionic and the other one cationic. The invention also relates to applicators and kits comprising components to be used to create said biodegradable barrier network. The invention also relates to the use of said applicator or kit in therapy, such as in medicine, veterinary medicine and horticulture.

Abstract: The invention relates to a biodegradable barrier network comprising at least two polypeptides, one being anionic and the other one cationic. The invention also relates to applicators and kits comprising components to be used to create said biodegradable barrier network. The invention also relates to the use of said applicator or kit in therapy, such as in medicine, veterinary medicine and horticulture.

Abstract: The invention relates to a biodegradable barrier network comprising at least two polypeptides, one being anionic and the other one cationic. The invention also relates to applicators and kits comprising components to be used to create said biodegradable barrier network. The invention also relates to the use of said applicator or kit in therapy, such as in medicine, veterinary medicine and horticulture.

Abstract: The invention relates to a biodegradable barrier network comprising at least two polypeptides, one being anionic and the other one cationic. The invention also relates to applicators and kits comprising components to be used to create said biodegradable barrier network. The invention also relates to the use of said applicator or kit in therapy, such as in medicine, veterinary medicine and horticulture.

Abstract: A method and product for preparing a controlled-release composition are provided. The method comprises formation of a mixture containing at least one amphiphilic substance capable of forming a liquid crystalline phase, in contact with a liquid selected from the group consisting of water, glycerol, ethylene glycol, propylene glycol and mixtures thereof. The method includes a step of providing in such mixture a bioactive material.

Abstract: The invention relates to a controlled-release composition for a biologically active material, wherein said active material has been dissolved or dispersed in an L2-phase comprising(a) at least one monoglyceride of an unsaturated fatty acid having 16-22 carbon atoms or a vegetable or animal oil containing such a monoglyceride,(b) at least one triglyceride of at least one unsaturated fatty acid having 16-22 carbon atoms or a vegetable or animal oil containing such triglycerides and(c) at least one polar liquid selected from the group consisting of water, glycerol, ethylene glycol and propylene glycol. Such L2 phases are known per se but are novel in this context.The composition is prepared by forming the L2 phase and adding the biologically active material before, during or after the formation of the L2-phase. For sensitive substances such as proteins a mixture of the mono- and triglycerides is added dropwisely to a solution of said substance in the polar liquid.

Abstract: The invention relates to a method in a water-base system for at least partially avoiding an expected viscosity decrease or providing a viscosity increase upon a temperature increase, by using a system containing as viscosity-adjusting agents a nonionic cellulose ether in such an amount that the aqueous solution thereof has a viscosity of 10-10,000 cP, measured according to Brookfield LV, 12 rpm at 20.degree. C., and an ionic surface-active compound in an amount of 1-30 mmol per liter of water.

Abstract: A process for covalently bonding biopolymer, such as protein, to an organic polymer surface coated with hydrophilic nonionic polymer having groups reactive with the biopolymer and having a cloud point in the reaction medium that is at least 5.degree. C. above the temperature at which the coated organic polymer surface is to be used, which comprises reacting biopolymer with the surface in an aqueous reaction medium, at a temperature not less than 5.degree. C. below the cloud point; but not above a temperature at which the biopolymer is deleteriously affected, and preferably not above about 100.degree. C., the product comprises a biopolymer immobilized on a hydrophilic solid surface having a nonionic polymer and a hydrophilic layer, coupled thereto via biopolymer-reactive groups of the nonionic polymer, and accordingly has low spontaneous adsorption of proteins and other biopolymers through electrostatic attraction and/or hydrophobic interaction.

Abstract: A method and product for preparing a controlled-release composition are provided. The method comprises formation of a mixture containing at least one amphiphilic substance capable of forming a liquid crystalline phase, in contact with a liquid selected from the group consisting of water, glycerol, ethylene glycol, propylene glycol and mixtures thereof. The method includes a step of providing in such mixture a bioactive material. Preferred controlled-release compositions include an alkylbetaine zwitterionic surfactant therein.

Abstract: A storage stable aqueous pulverized-coal dispersion can be pumped and can be burned by conventional techniques. The dispersion comprises stabilizing additives and a coal content which ranges from 60 to 80% by weight. The additives include a combination of (a) sufficient lecithin adsorbed on surfaces of coal particles to provide repulsion between the coal particles by hydration forces and (b) polymer cooperating with the lecithin and comprising at least one polymer having segments of hydrophobic as well as segments of hydrophilic character.