Abstract:
PROBLEM TO BE SOLVED: To provide a stable emulsion comprising a polyolefin, in particular, polyisobutene and water, and to provide a method to obtain the emulsion and also to provide the use of the emulsion.SOLUTION: An emulsion comprises, with respect to the total mass of the emulsion: (a) a polyolefin in an amount of 2 to 75 mass%; (b) a polymer Px in an amount of 0.05 to 40 mass%; (c) oil Ox in an amount of 0 to 25 mass%; (d) a surfactant Sx in an amount of 0 to 25 mass%; (e) an additive Ax in an amount of 0 to 20 mass%; and (f) water in an amount of 10 to 97.95 mass%. The emulsion can consist of components (a), (b) and (f).
Abstract:
PROBLEM TO BE SOLVED: To provide an improved method for producing a copolymer which is created by copolymerizing at least one hydrophilic N-vinyllactam and at least one hydrophobic comonomer and which is soluble in water to become a clear solution by free radical copolymerization in an organic solvent.SOLUTION: After 70-99 wt.% of used N-vinyllactam is transformed, a combination of: distilling 3-30% of the reaction mixture away and continuing polymerization in the same solvent; and performing the polymerization under pressure so as to avoid evaporation of components, is performed.
Abstract:
PROBLEM TO BE SOLVED: To provide methods for producing vinyllactam copolymers, which comprise causing radical polymerization of water-soluble N-vinyllactam and hydrophobic comonomers in an organic solvent in the presence of an initiator. SOLUTION: The following process measures are combined appropriately and comprise (i) performing polymerization under reflux, (ii) adding at least 5 mol% of N-vinyllactam to the polymerization mixture if at least 70 mol% of the total amount of hydrophobic monomer used have completely reacted, (iii) returning the condensate formed in the reflux from below to the polymerization mixture, (iv) introducing the initiator in the form of a solution in an organic solvent from below into the polymerization mixture, (v) adding N-vinyllactam to the reflux, (vi) distilling off a portion of the solvent and continuing polymerization following conversion of 70 to 99% by weight of the N-vinyllactam used, (vii) introducing at least one monomer from below into the polymerization mixture, and (viii) performing polymerization under pressure so as to avoid vaporization of the component. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
The utilization of copolymers obtained by means of radically initiated copolymerization of a) 80 to 99,5% vinyl acetate by weight and b) 0,5 to 20% by weight of a sulfonate group-carrying, mono-olefinically unsaturated monomer, as solubilizers for substances with low solubility in water.
Abstract:
The invention relates to a method for producing preparations of substances poorly soluble in water, wherein the poorly soluble substances are present amorphously embedded in a copolymer, and the copolymer is obtained by radically initiated polymerization of a mixture of i) 30 to 80 wt% N-vinyl lactam, ii) 10 to 50 wt% vinyl acetate, and iii) 10 to 50 wt% of a polyether, with the stipulation that the sum of the components i), ii), and iii) is equal to 100 wt%, wherein the embedding of the poorly soluble substance into the copolymer occurs at temperatures above the melting point of the poorly soluble substances.
Abstract:
Use of water-soluble or water-dispersible copolymers obtained through radically-initiated polymerization of a mixture of i) 30 to 80 wt.-% of N-vinyl lactam, ii) 10 to 50 wt.-% of vinyl acetate and iii) 10 to 50 wt.-% of a polyether as a binder for the manufacture of dosing forms comprising solid active ingredients, said copolymers being conditioned in that the total of i), ii) and iii) is equal to 100 wt.-%.
Abstract:
The present invention relates to coated inert granules whose coating comprises at least one polymer, at least one agriculturally active ingredient and at least one dispersant. It also relates to a process for preparation of said granules comprising the steps (1) treating at least onepolymer, at least one agriculturally active ingredient and at least one dispersant with water, (2) treating inert granules with the aqueous composition of step (1), and (3) drying the composition of step (2). The present invention also relates to a method of combating harmful insects, phytopathogenic fungi and controlling undesired vegetation with said granules.
Abstract:
The present invention is directed to stable emulsions comprising oils and a polymeric cationic emulsifier, the process to obtain said emulsions and the use of said emulsions.
Abstract:
processo para produzir partículas de polímero que absorvem água, partículas de polímero que absorvem água, e, artigo que absorve fluido. a presente invenção se refere a um processo para produzir partículas de polímero que absorvem água através da polimerização de gotículas de uma solução de monômero em uma fase gasosa aquecida circundante e escoando a corrente gasosa através da câmara de polimerização, que compreende o revestimento das partículas de polímero que absorvem água com pelo menos um ácido sulfínico, um ácido sulfônico e/ou sais dos mesmos.