Acrylic acid , copolymer

Fig. 7 shows the effect of an increasing amount of polar monomer on static shear holding tested at room temperature in a non-crosslinked iso-octylacrylate/ acrylic acid copolymer PSA. [Pg.490]

RDX may be substituted for HMX in the formulation. Ethyl acrylate-acrylic acid copolymer (EA/AA) consists of from 90 to 96 parts acrylate and from 4 to about 10 parts acrylic acid. Those in Table 5 are about 95 parts ethyl acrylate and 5 parts acrylic acid. TVOPA is a difluoramino plasticizer for the EA/AA binders. Projected cost data for BTTN range from 1 /4 to 1 /6 that of TVOPA. [Pg.886]

Some acrylic acid copolymers are promoted as having a very wide range of functions that permit them to act as calcium phosphate DCAs, barium sulfate antiprecipitants, particulate iron oxides dispersants, and colloidal iron stabilizers. One such popular copolymer is acrylic acid/sulfonic acid (or acrylic acid/ 2-acrylamido-methylpropane sulfonic acid, AA/SA, AA/AMPS). Examples of this chemistry include Acumer 2000 (4,500 MW) 2100 (11,000 MW) Belclene 400, Acrysol QR-1086, TRC -233, and Polycol 43. [Pg.447]

Ethylene-acrylic acid copolymer neutralized with amines such as triethanol amine or N-methyl diethanol amine enhances anti-settling properties [1198, 1554]. [Pg.9]

Carboxymethylcellulose, polyethylene glycol Combination of a cellulose ether with clay Amide-modified carboxyl-containing polysaccharide Sodium aluminate and magnesium oxide Thermally stable hydroxyethylcellulose 30% ammonium or sodium thiosulfate and 20% hydroxyethylcellulose (HEC) Acrylic acid copolymer and oxyalkylene with hydrophobic group Copolymers acrylamide-acrylate and vinyl sulfonate-vinylamide Cationic polygalactomannans and anionic xanthan gum Copolymer from vinyl urethanes and acrylic acid or alkyl acrylates 2-Nitroalkyl ether-modified starch Polymer of glucuronic acid... [Pg.12]

Vinylamide morpholine derivative acrylic acid copolymer [1773]... [Pg.16]

M. L. Braden. Preparation of amphoteric acrylic acid copolymers suitable as oil-in-water emulsion breakers. Patent US 5552498,1996. [Pg.361]

CE has been used for the analysis of anionic surfactants [946,947] and can be considered as complementary to HPLC for the analysis of cationic surfactants with advantages of minimal solvent consumption, higher efficiency, easy cleaning and inexpensive replacement of columns and the ability of fast method development by changing the electrolyte composition. Also the separation of polystyrene sulfonates with polymeric additives by CE has been reported [948]. Moreover, CE has also been used for the analysis of polymeric water treatment additives, such as acrylic acid copolymer flocculants, phosphonates, low-MW acids and inorganic anions. The technique provides for analyst time-savings and has lower detection limits and improved quantification for determination of anionic polymers, compared to HPLC. [Pg.278]

Figure 6. Release of insulin under gastric conditions from crosslinked 1/1 random acrylic acid copolymers with either hydroxyethyl acrylate or methyl acrylate.

We can incorporate short chain branches into polymers by copolymerizing two or more comonomers. When we apply this method to addition copolymers, the branch is derived from a monomer that contains a terminal vinyl group that can be incorporated into the growing chain. The most common family of this type is the linear low density polyethylenes, which incorporate 1-butene, 1-hexene, or 1-octene to yield ethyl, butyl, or hexyl branches, respectively. Other common examples include ethylene-vinyl acetate and ethylene-acrylic acid copolymers. Figure 5.10 shows examples of these branches. [Pg.111]

We make polyethylene resins using two basic types of chain growth reaction free radical polymerization and coordination catalysis. We use free radical polymerization to make low density polyethylene, ethylene-vinyl ester copolymers, and the ethylene-acrylic acid copolymer precursors for ethylene ionomers. We employ coordination catalysts to make high density polyethylene, linear low density polyethylene, and very low density polyethylene. [Pg.288]

Ethylene-acrylic acid copolymers are converted to ethylene ionomers in a separate, postpolymerization reaction. [Pg.288]

As far as neighboring group inhibition is concerned, sequence distribution can play an important role, e.g. Morowetz [5] showed that partially hydrolyzed polyacrylamide hydrolyzes more slowly than an acrylic acid copolymer of the same charge. The former has a more even distribution of groups leading to a greater proportion of the least reactive BAB triad (where A are the acrylamide and B are the acrylic acid moieties). [Pg.113]

The relative proportions of triads is determined by the synthetic conditions chosen as described above for acrylic acid copolymers of acrylamide derived by either direct copolymerization or by hydrolysis. Also, the polymerization pH has a considerable effect on the reactivity in acrylamide/acrylic acid copolymerization. [Pg.114]

Predictions of the Evolution with Time of the Viscosity of Acrylamine—Acrylic Acid Copolymer Solutions... [Pg.116]

In the case of acrylamide-acrylic acide copolymers, such a prediction requires a good knowledge and understanding on the three following aspects ... [Pg.116]

In recent works, we have studied the kinetics of both hydrolysis and degradation of a acrylamide-acrylic acid copolymer containing 17% of acrylate groups. The purpose of this paper is to give some predictions of the thickening properties evolution based upon semi-empirical viscosity laws. [Pg.117]

We have previously performed a systematical study of the degradation of a acrylamide-acrylic acid copolymer called sample C( of acrylate content r — 17% and molecular weight Mw — 6 106 ) prepared by... [Pg.118]

We have recently performed systematical measurements of the intrinsic viscosity of acrylamide-acrylic acid copolymers for large ranges of r and a, in the presence of CaCl2(26). Our results show that the empirical relation (14) can be extended to the case of divalent cations by using the value of 7 given in relation (15). It should then possible to predict the variation of intrinsic viscosity at infinite dilution, but at finite concentration the formation of aggregates makes difficult the determination of the Huggins constant. [Pg.123]

In this work, we propose a method based on different combined semi-empirical laws to predict the evolution of the viscosity of a solution of acrylamide - acrylic acid copolymer. In fact, it appears... [Pg.125]

Interactions Between Acrylamide—Acrylic Acid Copolymers and Aluminum Ions in Aqueous... [Pg.129]

In a first part of this paper, we will discuss results of a 27A1 NMR study of the binding of Al ions on acrylamide-acrylic acid copolymers as a function of pH, at the light of a simple electrostatic model. The second part deals with the phase diagrams, physical gelation and precipitation phenomenon, for different copolymer compositions and under various conditions of concentrations, pH and salinity. [Pg.129]

AACo Acrylic acid copolymers PVA Poly (vinyl acetate)... [Pg.100]

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