33results about How to "Increase structural viscosity" patented technology

The present invention is one kind of emulsified acrylate thickener for paint printing. It consists of acrylic acid 160-170 weight portions, vinyl benzene sulfonic acid 90-95 weight portions, 2-acrylamido-2-methypropyl sulfonic acid 18-19 weight portions, chlorotrimethylamino propyl acrylamide 22-24 weight portions, 20 % concentration ammonia water 300-320 weight portions, glyceryl dimethcrylate 2.5-3.5 weight portions, No. 200 solvent oil or aviation kerosene 100-150 weight portions, hydrogenated polyoxyethylene castor oil ether 22-28 weight portions, and ammonium persulfate 5-7 weight portions, which are reverse emulsion polymerized and mixed with linear organosilicon body in 4-6 weight portions. It has high water combining capacity, great electrolysis capacity, good handle and high color brightness.

The invention discloses an anti-calcium tackifier copolymerization complex and a preparation method thereof. The anti-calcium tackifier copolymerization complex comprises a structural unit A, a structural unit B and a structural unit C. The structural unit A is acrylamide, the structural unit B is a zwitterionic monomer methacryloyloxyethyl-N, N-dimethylpropanesulfonate (DMAPS), and the structural unit C is an ionic complex of the structural unit B and cationic polyamine. The copolymerization complex comprises, by weight, 10 to 75% of the structural unit A, 8 to 55% of the zwitterionic monomer and 1 to 50% of the cationic polyamine, and preferably, comprises 30 to 65% of the structural unit A, 20 to 60% of the zwitterionic monomer and 3 to 40% of the cationic polyamine. The tackifier obtained by the preparation method can resist a temperature of 150 DEG C, has a saturated anti-NaCl concentration and an anti-CaCl2 concentration of 20% and has excellent shale inhibition performances and de-filtration performances.

The invention discloses a preparation method of a thickening agent copolymerization association compound. The copolymerization association compound contains a structural unit A, a structural unit B and a structural unit C, the structural unit A is acrylamide, the structural unit B is amphoteric monomer N-methyldiallyl propanesulfonate (MAPS), and the structural unit C is an ion association body of the structural unit B and cationic polyamine; and based on the total amount of the copolymerization association compound, the content of the structural unit A is 10-75wt%, the total content of the amphoteric monomer is 8-55wt%, and the content of the cationic polyamine is 1-50wt%. Temperature resistance of the thickening agent prepared by the method can reach 200 DEG C, anti-NaCl concentration is saturated, and the anti-CaCl2 concentration reaches 20%; and meanwhile, excellent shale inhibition performance and filtrate loss controllability are furthermore achieved.

The invention discloses a tackifier copolymerization associate used for a drilling fluid and a preparation method of the tackifier copolymerization associate. The copolymerization associate comprises a constitutional unit A, a constitutional unit B, a constitutional unit C and a constitutional unit D. The constitutional unit A is acrylamide, the constitutional unit B is N-methyl diallyl propylsulfonate (MAPS) which is an amphoteric ionic monomer, the constitutional unit C is an ionic associate of the constitutional unit B and cationic polyamine, and the constitutional unit D is starch. Based on the total amount of the copolymerization associate, the copolymerization associate comprises 6-45% by weight of acrylamide, 5-35% by weight of the N-methyl diallyl propylsulfonate which is an amphoteric ionic monomer, 2-30% by weight of the cationic polyamine, and 5-35% by weight of starch. A tackifier obtained through the preparation method can resist temperature as high as 180 DEG C, can resist a saturated NaCl solution, and resist a CaCl2 solution with the concentration being 20%. The tackifier is excellent shale inhibition and filtrate reduction.

The invention discloses a tackifier copolymerization associate used for a drilling fluid and a preparation method of the tackifier copolymerization associate. The copolymerization associate comprises a constitutional unit A, a constitutional unit B, a constitutional unit C and a constitutional unit D. The constitutional unit A is N, N-dimethylacrylamide, the constitutional unit B is N-methyl diallyl propylsulfonate (MAPS) which is an amphoteric ionic monomer, the constitutional unit C is an ionic associate of the constitutional unit B and cationic polyamine, and the constitutional unit D is starch. Based on the total amount of the copolymerization associate, the copolymerization associate comprises 6-45% by weight of N, N-dimethylacrylamide, 5-35% by weight of the N-methyl diallyl propylsulfonate which is an amphoteric ionic monomer, 2-30% by weight of the cationic polyamine, and 5-35% by weight of starch. A tackifier obtained through the preparation method can resist temperature as high as 180 DEG C, can resist a saturated NaCl solution, and resist a CaCl2 solution with the concentration being 20%. The tackifier is excellent shale inhibition and filtrate reduction.

The invention discloses a flocculant, a preparation method and application thereof. The flocculant comprises a starch structural unit, a zwitterionic monomer structural unit, a polyether structural unit and a cross-linking agent structural unit. In the preparation method, the amphoteric ion graft copolymerization modified starch, polyether and water are mixed, and the cross-linking agent is added dropwise to carry out cross-linking reaction after mixing evenly; . The modified starch flocculant prepared by the invention has the advantages of fast flocculation effect, low biological toxicity, low cost and the like, and the removal rate of COD, turbidity and suspended solids can reach more than 90% at a low usage amount.

The invention discloses a temperature-resistant thickening agent copolymerization association compound and a preparation method thereof. The copolymerization association compound contains a structural unit A, a structural unit B and a structural unit C, the structural unit A is N,N-dimethylacrylamide, the structural unit B is an amphoteric monomer methacryloyloxyethyl-N,N-dimethylpropanesulfonate (DMAPS), and the structural unit C is an ion association body of the structural unit B and cationic polyamine; and based on the total amount of the copolymerization association compound, the content of the N,N-dimethylacrylamide is 10-75% by weight, preferably 30-65% by weight, the total content of the amphoteric monomer is 8-55% by weight, preferably 20-60% by weight, and the content of the cationic polyamine is 1-50% by weight, preferably 3-40% by weight. Temperature resistance of the thickening agent prepared by the method can reach 150 DEG C, anti-NaCl concentration is saturated, and anti-CaCl2 concentration reaches 20%; and meanwhile, excellent shale inhibition performance and filtrate loss controllability are furthermore achieved.

The invention discloses a grafted starch thickening agent copolymerization association compound and a preparation method thereof. The copolymerization association compound contains a structural unit A, a structural unit B, a structural unit C and a structural unit D, the structural unit A is acrylamide, the structural unit B is an amphoteric monomer methacryloyloxyethyl-N,N-dimethylpropanesulfonate (DMAPS), the structural unit C is an ion association body of the structural unit B and cationic polyamine, and the structural unit D is starch; and based on the total amount of the copolymerization association compound, the content of the acrylamide is 6-45wt%, the total content of the amphoteric monomer methacryloyloxyethyl-N,N-dimethylpropanesulfonate is 5-35wt%, the content of the cationic polyamine is 2-30wt%, and the content of the starch is 5-35wt%. Temperature resistance of the thickening agent prepared by the method can reach 150 DEG C, anti-NaCl concentration is saturated, and anti-CaCl2 concentration reaches 20%; and meanwhile, excellent shale inhibition performance and filtrate loss controllability are furthermore achieved.

The nanofiber-xanthan gum compound viscosity and shearing agent for drilling fluid is composed of 55-60% cationic nano-cellulose, 13-15% dispersant, 6.5-11% inorganic salt, and 18-20% xanthan gum; In the present invention, the sugarcane residue is firstly dried, pulverized, purified, strongly acidified, and dialyzed to prepare cationic nanofibers; on this basis, it is combined with xanthan gum and inorganic salts to form a composite viscosity-extracting fiber and spherical natural polymer. The shearing agent has a certain synergistic effect and can increase the viscosity and shearing force of the drilling fluid at the same time.