DELAYED POLYACRYLAMIDE-CO-ALUMINUM HYDROXYL CHLORIDE GEL
A delayed gelling system useful in conformance control in the production of petroleum from subterranean formations is disclosed. The gelling system comprises an acidic aqueous solution of acid-soluble or cationic polyacrylamide, an at least partially neutralized acid aluminum salt, an activator comprising a hydroxyl donor, and an optional gel modifier.
Justia Patents US Patent Application for POLYACETAL POLYMERS, CONJUGATES, PARTICLES AND USES THEREOF Patent Application (Application #20250360978)
Method of hydrolyzing polyacrylamide
US4171296A US05/947,905 US94790578A US4171296A US 4171296 A US4171296 A US 4171296A US 94790578 A US94790578 A US 94790578A US 4171296 A US4171296 A US 4171296A Authority US United States Prior art keywords weight polyacrylamide method polymeric latex alkali Prior art date 1976-07-15 Legal status (The legal status is an assumption and is not a legal conclusion.
Dispersions of polyacrylamide particles are formed and treated with a caustic material to hydrolyze the polymer to form anionic acrylamide polymers. A preferred technique for forming these products comprises the formation of a stabilized water-in-oil emulsion of aqueous acrylamide monomer, polymerizing the monomer, reacting the polymer emulsion thus formed with a hydrolysis agent and inverting
US Patent for Polymerization process Patent (Patent
Justia Patents Group Viii Transition Metal (fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) US Patent for Polymerization process Patent (Patent # 10,377,841) Polymerization process . May 6, 2016 - ExxonMobil Chemical Patents Inc. A process including contacting one or more monomers, at least one catalyst system, and a condensing agent including a majority
The decamer of acrylamide (polyacrylamide) was drawn using ChemBio3D Ultra in its syndiotactic stereochemistry as a 3D model, whereas the structures of CHT (10 glucosamine saccharide units) and pectin (10 galactopyranosyl uronic acid units) were built from standard bond lengths and angles using the polysaccharide Builder Module on HyperChem 8.0.8.
Gelled composition for treating the hair, containing a
Such polymers are described in particular in French patent 1222824 and German patent application 2330956. Polymers of this type having in its chain acrylamide link, which may be N-alkylated or hydroxyalkylated described, in particular, in Luxembourg patent applications 75370 and 75371, released under the name QUADRAMER by the company AMERICAN CYANAMID.
Liquid carriers include syrup, peanut oil, olive oil, saline and water. The carrier may also include a sustained release material such as glyceryl monostearate or glyceryl distearate, alone or with a wax. The amount of solid carrier varies but, preferably, will be between about 20 5 mg to about 1 g per dosage unit.
Full text of "USPTO Patents Application 09989695"
Full text of "USPTO Patents Application 09989695" See other formats
Chemical conversion solution for aluminum or aluminum alloy, chemical conversion method, and chemical conversion film. An object of the present, invention is to provide a chemical conversion surface, treatment solution, that is capable of forming a chemical conversion film with excellent corrosion resistance and designability on articles having aluminum or aluminum alloy surfaces by using
Anti-Glu-Glu Epitope Tag Affinity Matrix - BioLegend
Preparation The antibody was purified by affinity chromatography. Storage & Handling Store between 2-8°C. The matrix may be re-used several times. To strip column after use, wash with several bead volumes of 0.1 M glycine pH 2.8 followed immediately by PBS containing 0.3% Thimerosal or 1mM Sodium Azide as preservative.
1. Preparation of the reagents. TO1-Biotin poststaining solution (gel staining solution) Make 1 L of 1 M phosphate buffer at pH 7.2 at 25 °C by adding 342 mL of 1 M of Na 2 HPO 4 and 158 mL of 1 M NaH 2 PO 4. Adjust pH to 7.2 at 50 mM by adding the appropriate phosphate solution.
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