Organopolysilicone polyether drainage aid
FIELD: pulp and paper industry.
SUBSTANCE: invention relates to means for dehydration of cellulose. Disclosed is a composition of dehydration means, containing polyorganosiloxanes functionalised with side polyethers and/or aliphatic hydrocarbons, having presented structures. Also disclosed is a method of producing said composition and method for increasing dehydration rate and filtering in procedures for washing and disinfection of cellulose.
EFFECT: use of disclosed composition for dehydration significantly speeds up dehydration and improves filtration of fibrous mass when processing cellulose.
18 cl, 1 tbl, 8 ex
FIELD: polymer materials in paper-and-pulp industry.
SUBSTANCE: invention relates to manufacturing cellulose-polymer composites that can be, in particular, used in production paper or cardboard. Method according to invention providing a composition and manufacturing sheet therefrom followed by drying. In the method of invention, aqueous nanodispersion of polyorganosiloxanes is utilized, which can be introduced into composition or can be deposited onto sheet before drying on size press or after drying of sheet to moisture content not less than 12°.
EFFECT: improved waterproofness, increased inflammation temperature, and improved physicochemical characteristics of material.
SUBSTANCE: water-soluble composition contains a) at least one water-soluble optical bleaching agent, b) a polymer obtained from an ethylenically unsaturated monomer or a monomer mixture, characterised by that at least one monomer is an acrylamide and the water-soluble polymer has average (weight-average) molecular weight between 500 and 49000, optionally c) polyethylene glycol with weight-average molecular weight between 500 and 6000, and d) water. Said composition is used to optically bleach paper.
EFFECT: high degree of bleaching while preserving rheological properties.
7 cl, 7 tbl, 70 ex
FIELD: textile, paper.
SUBSTANCE: method consists in addition of aqueous solution of binding agent, having concentration from 0.03 to 0.4 wt %, into suspension of cellulose material; and addition of mixed suspension of cellulose into header, and suspension contains suspension of cellulose material and aqueous solution of binding agent. Besides, addition of aqueous solution of binding agent is done between discharge box and meshy filter arranged in close proximity to discharge box. Installation comprises the following components: meshy filter to remove admixtures from suspension of cellulose material and device to add binding agent to supply aqueous solution of binding agent, having concentration from 0.03 to 0.4%, into pipe, which connects meshy filter and discharge box.
EFFECT: invention provides for the possibility to make well-formed paper even when using high-speed paper-making machines.
4 cl, 3 dwg
SUBSTANCE: aqueous dispersion contains A) 0.05-10 wt % salts of perfluoropolyester derivatives of dicarboxylic acids of formula T-O-Rt-T, where T = -CF2-COOZ or -CF2CF2-COOZ, Z - Na, K, NH4, R1(R2)(R3)N, R1=R2=alkyl or hydroxyalkyl, R3 = H, alkyl or hydroxyalkyl, Rf denotes (per)fluoropolyoxyalkylene chain with number-average molecular weight of 500-10000, and B) 0.01-5 wt % water-dispersible or water-soluble cationogenic polymers with charge density in dry polymer greater than 1 mEq/g. The dispersion is obtained by dispersing 0.05-10 wt % component (A) in water. Cationogenic polymer (B) is slowly added to the obtained dispersion while stirring until achieving weight ratio of (A) to (B) of 1:1-5:1.
EFFECT: dispersions which endow paper with improved oil-repellent properties against compounds with high content of fat or fatty acids.
14 cl, 16 tbl, 17 ex
FIELD: paper-and-pulp industry.
SUBSTANCE: invention provides aqueous dispersion, method of preparing it, use of dispersion, and a paper manufacturing process comprising internal sizing and surface sizing of paper. Aqueous dispersion contains at least one cellulose-reactive sizing agent selected from group consisting of ketene dimers and multimers, at least one cellulose-unreactive sizing agent, and at least one emulsifier selected from group consisting of oxyalkylene phosphate and sulfate esters and their salts. Dispersion preparation method comprises joining together sizing agents with at least one emulsifier in presence of water to form mixture, which is then homogenized to form aqueous dispersion. Paper manufacturing process comprises forming paper sheet from pulp containing cellulose fibers and depositing said aqueous dispersion thereon. Paper manufacturing process also comprises adding said aqueous dispersion to pulp containing cellulose fibers and dehydrating pulp on screen to produce paper.
EFFECT: increased stability of dispersion and efficiency of outside and internal sizing.
18 cl, 4 tbl, 4 ex
SUBSTANCE: separating organosilicon O/W type microemulsion consists of 80-40 wt % water and a dispersed phase containing polydiorganosiloxane of general formula R1Si(CH3)2O[Si(CH3)2O]x[Si(CH3)R2O]ySi(CH3)2R1 where R'-CH3, C2H3, OH; R2 - alkyl C1-C14, CH2CH2CF3, C6H5, (CH2)3OCH2(CF2)4H; x=30-1000, y=0-350, in amount of 10-30 wt % and an emulsifying agent - polyoxyalkylene polyorganosiloxane block-copolymer of general formula R3Si(CH3)2O[Si(CH3)2O]m[SiCH3R4O]n[SiCH3R2O]pSi(CH3)2R3 where R2 has the same value as above, R3-CH3, C8H17, C12H25, CH2CH2CF3, C6H5; m=10-50, n=50-5, p=3-10; R4-(CH2)3O[CH2CH2O]a[CH(CH3)CH2O]bR5; where R5-H, CH3, C4H9; a=0-25, b=25-0, in amount of 10-30 wt %.
EFFECT: obtaining a separating organosilicon microemulsion with longer service life of the emulsion in diluted form for efficiently conducting different processes.
1 dwg, 11 ex
SUBSTANCE: invention relates to methods for synthesis of organosilicon compounds which self-emulsify in water and compositions based on said compounds. A method is proposed for synthesis of aminooxyalkylene-containing oligoalkoxy siloxane (component A) through hydrolysis of a mixture of organotrialkoxysilanes and an oligoalkoxy siloxane-oligooxyalkylene block-copolymer with mass ratio of reagents equal to (1-9):(0.02-1) in the presence of a 20% HCl solution catalyst and co-condensation of the obtained semi-product with addition of amine-containing organotrialkoxysilanes with subsequent distillation of alcohol and neutralisation of the end reaction product. Proposed also is a self-emulsifying composition for porous construction materials, consisting of components A+B in ratio 1:(1-4), where B is organotrialkoxysilane used in the hydrolysis process as a reagent of the initial mixture.
EFFECT: design of a method of obtaining an amine-containing organosilicon oligomer and preparation of self-emulsifying compositions which form stable emulsions which can provide the necessary depth of penetrating porous construction materials and giving the materials good hydrophobic properties.
2 cl, 3 tbl, 10 ex
SUBSTANCE: invention relates to organosilicone polymers and compositions thereof. Proposed a composition for treating fabrics and hard surfaces, comprising, based on total composition weight 0.1% to 50% of a surfactant, selected from the group consisting of anionic, cationic, amphoteric, zwitterionic, non-ionic surfactants, and combinations thereof, and 0.01% to 20% of a random or blocky organosilicone polymer with nitrogen containing groups, and a method relating to surface treatment with the said composition. Proposed methods for manufacture of organosilicone polymers used in the compositions.
EFFECT: highly effective and economical composition.
18 cl, 1 dwg, 27 ex
SUBSTANCE: invention relates to field of organic chemistry, namely to hydrophilic polymer compound, including polymer compound, which inhibits platelet adhesion, and compound, inhibiting blood clotting reaction, covalently bound with said polymer compound, where said polymer compound, inhibiting platelet adhesion, represents copolymer of monomers, selected from the group, consisting of vinylacetate, vinylpyrrolidone and siloxane, with said copolymer having amino group for formation of covalent bond with compound, inhibiting blood clotting; and where compound, inhibiting blood clotting reaction, represents compound, expressed by general formula (I) , where R1 represents (2R,4R)-4-alkyl-2-carboxy-piperidino group, R2 represents 1,2,3,4-tetrahydroquinoline, substituted with lower alkyl group. Invention also relates to means for processing surface of medical devices or medical materials based on hydrophilic polymer compound.
EFFECT: novel hydrophilic polymer compound, possessing useful properties is obtained.
8 cl, 3 dwg, 2 tbl, 14 ex
SUBSTANCE: invention relates to a method of producing polysiloxane urethane, which can be used as film vapour- and gas-permeable polymer materials and protective coatings on fabric. The disclosed method is realised by reacting a low-molecular weight diol, organosiloxane and an aromatic diisocyanate in the medium of an aprotic solvent. The low-molecular weight diol used is an ethylene oxide- and propylene oxide-based block copolymer with molecular weight of 4000-4500 and content of terminal hydroxyl groups of 80-99 wt % and potassium (sodium) alcoholate groups of 1-20 wt %. The organosiloxane used is cyclotetrasiloxane of formula: , where R is -CH3, -C2H5, -C6H5, -CH=CH2. The molar ratio of the ethylene oxide- and propylene oxide-based block copolymer, aromatic diisocyanate and cyclotetrasiloxane is equal to 1:(10-30):(3-40), respectively.
EFFECT: simple process of producing polysiloxane urethane, as well as obtaining polysiloxane urethane with high ultimate tensile stress, modulus of elasticity and vapour permeability, a porous structure, gas permeability and heat-resistance.
19 ex, 1 tbl, 2 dwg
SUBSTANCE: invention relates to compositions used in cosmetic compounds containing cross-linked silicone copolymers, where the cross links are acrylate oligomers or polymers. The disclosed compositions, which are used cosmetic compounds, contain silicone copolymers, terpolymers and higher-order polymers, which contain polyether-substituted repeating units and epoxy- and oxirane repeating units which react with acrylate compounds in the presence of a free-radical initiator.
EFFECT: disclosed compositions are hydrophilic, are compatible with a wide range of polar and non-polar media and can swell either in water or oil, thereby enabling emulsification, thickening, adhesion, lustre, longevity and removal of hydrophilic agents.
54 cl, 33 tbl, 42 ex
SUBSTANCE: disclosed cosmetic compositions contain silicone copolymers, terpolymers and higher-order polymers, which contain polyether-substituted structural units and epoxy- and oxirane structural units which react with acrylate compounds in the presence of a free-radical initiator.
EFFECT: disclosed compositions are self-emulsifying and can swell either in water or in oil, thus providing emulsification, thickening, adhesion, lustre and longevity of hydrophilic active substances.
54 cl, 33 tbl, 42 ex
SUBSTANCE: invention relates to organosilicon polymers, containing benzoic acid esters, in form of particles, method of obtaining thereof, thereof-containing cosmetic or dermatological compositions, as well as to their application for protection of human or animal organism from UV-radiation. Method of obtaining polymer compounds of silyl ether by interaction of monomers (I) and (IV) is claimed. Also claimed are: polymer, obtained by said method, versions of its application, polymer composition, as well as monomer (I) for obtaining said polymer and methods of its obtaining.
EFFECT: obtained polymers demonstrate increasing UV-protection depending on time of exposure to sun and radiation intensity.
15 cl, 12 dwg, 1 tbl, 37 ex