us4622356a polyacrylamide and polyacrylic acid polymers

us4622356a - polyacrylamide and polyacrylic acid polymers

US4622356A - Polyacrylamide and polyacrylic acid polymers

The use of a cyclic compound containing a ##STR1## group, i.e., methone, has been found to allow a poor acrylamide or acrylic acid or 2-acrylamide-2-methylpropane sulfonic acid and its salts monomer to be polymerized to a polymer having improved performance characteristics and/or improved rates of polymerization.

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us4622356a-polyacrylamide and polyacrylic acid polymers

us4622356a-polyacrylamide and polyacrylic acid polymers

Polyacrylic acid polymers are modified with hydroxylamine to convert a portion of the acrylic acid groups in the polymer to hydroxamic acid groups. The process requires utiization of a pH between 1-6 and a temperature ranging between 70 -150 C.

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us patent for polyacrylamide and polyacrylic acid polymers

US Patent for Polyacrylamide and polyacrylic acid polymers

Polyacrylamide and polyacrylic acid polymers Jul 10, 1985 - American Cyanamid Company The use of a cyclic compound containing a ##STR1## group, i.e., methone, has been found to allow a poor acrylamide or acrylic acid or 2-acrylamide-2-methylpropane sulfonic acid and its salts monomer to be polymerized to a polymer having improved performance

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us4622356a – polyacrylamide and polyacrylic acid polymers for

us4622356a – polyacrylamide and polyacrylic acid polymers for

US4622356A - Polyacrylamide and polyacrylic acid polymers. The use of a cyclic compound containing a ##STR1## group, i.e., methone, has been found to allow a poor acrylamide or acrylic acid or 2-acrylamide-2-methylpropane sulfonic acid and its salts monomer to be polymerized to a polymer having improved performance characteristics and/or improved rates of polymerization.

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polyacrylamide and polyacrylic acid polymers - patent us

Polyacrylamide and polyacrylic acid polymers - Patent US

US-4568731-A chemical patent summary.

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custom useful flocculant polyacrylic acid polyacrylamide

custom useful flocculant polyacrylic acid polyacrylamide

US4622356A - Polyacrylamide and polyacrylic acid polymers The use of a cyclic compound containing a ##STR1## group, i.e., methone, has been found to allow a poor acrylamide or acrylic acid or 2-acrylamide-2-methylpropane sulfonic acid and its . Get Price

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polyacrylic acid and polyacrylamide as cloud point - new

polyacrylic acid and polyacrylamide as cloud point - New

(2017). Polyacrylic acid and polyacrylamide as cloud point modifier for Brij-30 in alcoholic aqueous solution. Journal of Dispersion Science and Technology: Vol

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controlled conversion of polyacrylamide into polyacrylic acid

Controlled conversion of polyacrylamide into polyacrylic acid

Interaction of nitrous acid with aqua solution of poly (acrylamide) gives poly (acrylic acid) in quantitative conversion yields. The reaction proceeds smoothly, with simultaneous evolution of nitrogen, provided that the temperature below 5°C. The procedure presented provides a versatile route to prepare acrylic acid-acrylamide copolymers in

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polyacrylamide and polyacrylic acid polymers - patent us

Polyacrylamide and polyacrylic acid polymers - Patent US

US-4568731-A chemical patent summary.

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us patent for polyacrylamide and polyacrylic acid polymers

US Patent for Polyacrylamide and polyacrylic acid polymers

Polyacrylamide and polyacrylic acid polymers Sep 15, 1983 - American Cyanamid Company The use of a cyclic compound containing a ##STR1## group, i.e., methone, has been found to allow a poor acrylamide or acrylic acid or 2-acrylamide-2-methylpropane sulfonic acid and its salts monomer to be polymerized to a polymer having improved performance

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polyacrylamide and polyacrylic acid polymers

Polyacrylamide and polyacrylic acid polymers

Complete Patent Searching Database and Patent Data Analytics Services.

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current status on the biodegradability of acrylic polymers

Current status on the biodegradability of acrylic polymers

Acrylic polymers (AP) are a diverse group of materials with broad applications, frequent use, and increasing demand. Some of the most used AP are polyacrylamide, polyacrylic acid, polymethyl methacrylates, and polyacrylonitrile. Although no information for the production of all AP types is published …

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hydrolysis of polyacrylamide and acrylic acid-acrylamide at

hydrolysis of polyacrylamide and acrylic acid-acrylamide at

Polyacrylamide degradation and its implications. The hydrolyzed form of polyacrylamide (HPAM), a co-polymer of acrylamide and acrylic acid, is the most widely used anionic PAM in oil and gas development as well as in soil conditioning. 1,9,12,21 . Get Price

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us4042772a - urea as an additive to improve the viscosity and

US4042772A - Urea as an additive to improve the viscosity and

Poor quality acrylamide can be used to produce good quality water-soluble polymers by conducting the polymerization in the presence of urea. Urea as an additive to improve the viscosity and activity of acrylamide-acrylamide acrylic acid polymers prepared from poor quality acrylamide

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removal of anionic dyes from aqueous solutions using

Removal of anionic dyes from aqueous solutions using

[18,19]. Polyacrylic acid (PAA) is a hydrophilic and inexpensive polymer, has good resilience and high respond to external stimuli such as pH [20]. Therefore, many attempts have been made to manufacture the hydrogels based on the polyacrylamide and poly-acrylic acid hydrogels [21-23]. There are some recent reports on removal of dyes by hydrogels,

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comparison between the elasticity of polyacrylamide and

Comparison Between the Elasticity of Polyacrylamide and

polyacrylic gels we took ammonium persulfate only, while for the polyacrylamide gels we took ammonium persulfate and tetramethylethylene (TEMED) [7]. In the case of polyacrylic acid, nitrogen was bubbled in the solution to remove oxygen which could inhibit the reactions. The polyacrylamide gels are ready in about 30 min. at ambient temperature

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polyacrylamide and polyacrylic acid polymers

Polyacrylamide and polyacrylic acid polymers

Complete Patent Searching Database and Patent Data Analytics Services.

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copolymer of acrylamide and acrylic acid polyacrylamide

copolymer of acrylamide and acrylic acid polyacrylamide

Hydrolysis of polyacrylamide and acrylic acid–acrylamide copolymers - Smets - 1959 - Journal of Polymer Science - Wiley Online Library. In the case of copolymers of acrylamide and acrylic acid (r 1 = 1.38 and r 2 = 0.36, respectively), the reaction proceeds in two distinct steps, of which the first is about 50 to 100 times more rapid than the second

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star‐like dextran‐graft‐(polyacrylamide‐co‐polyacrylic acid

Star‐Like Dextran‐graft‐(polyacrylamide‐co‐polyacrylic acid

Summary: Star-like dextran-graft-(polyacrylamide-co-polyacrylic acid) (D-g-(PAA-co-PAAc) copolymers in a salt form were obtained by alkaline hydrolysis of Dextran-graft-Polyacrylamide (D-g-PAA) samples. The internal structure of D-g-PAA insolution predetermined the reaction course and the conversion degree dependedupontheinitial architecture ofmacromolecules.Itwasshownthatmacromoleculesof D-g

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thermally responsive swelling properties of polyacrylamide

Thermally Responsive Swelling Properties of Polyacrylamide

Interpenetrating polymer network (IPN), random copolymer, and homopolymer nanoparticles of acrylamide and acrylic acid were prepared using an inverse emulsion polymerization technique.

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study of electrokinetic properties and structure of adsorbed

Study of electrokinetic properties and structure of adsorbed

Abstract Influence of polyacrylic acid (PAA) and polyacrylamide (PAM) molecular weight on adsorption and electrokinetic properties of Fe2O3–polyelectrolyte solution interface was studied. Main factors, responsible for observed changes of zeta potential and surface charge of hematite, were determined on the basic of obtained data. It was demonstrated that number and the distribution of COOH

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cation pam ( polyacrylamide ) acrylic acid polymer

cation pam ( polyacrylamide ) acrylic acid polymer

Polymer Properties Database. is simply called polyacrylamide or PAM [-CH2CH(CONH2)-]. It is a non-ionic, watersoluble, and biocompatible polymer that can be tailored to meet a broad range of applications. The polymer can be synthesized as a simple linear chain or as a cross-linked structure.

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polymers polyacrylic acid - big chemical encyclopedia

Polymers polyacrylic acid - Big Chemical Encyclopedia

Polyacrylic acids run well on sulfonated gels in 0.2 M NaAc, pH 7.75. Polyacrylic acid (pAA) homopolymers and related copolymers have become a commercially important class of water-soluble polymers. Acrylic acid polymers can range in molecular mass from less than 1000 Da to greater than 1,000,000 Da. A representative set of analysis conditions

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star-like dextran-graft-(polyacrylamide-co-polyacrylic acid

Star-Like Dextran-graft-(polyacrylamide-co-polyacrylic acid

At the same time, the presence of dextran-polyacrylamide and dextran-polyacrylamide-co-polyacrylic acid graft polymers in distilled water results in the transition of chlorin e6 to its non

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