Acryl Co Polymers

DBR Kumar, MR Reddy, VN Mulay, N Krishnamurti. Acrylic co-polymer emulsion binders for green machining of ceramics. Eur Polym J 36(7) 1503—1510, 2000. 

Latex thickening, a result of surfactant penetration and solubilization of the polymer, increases with the vinyl acetate content of vinyl acetate-butyl acrylate co-polymer latexes. 

Polarity of Vinyl Acrylic Latex and Surfactant Adsorption Contact angle measurements, dispersion and polar contribution to latex film surface tension and polarity of polymer calculated according to the method of Kaelble (10) of the three latex films are whown in Table V. It is seen that the polarity of the latex film decreases with increase in butyl acrylate content of the vinyl acrylic co-polymer. The polarity of the 70/30 (VA/BA) latex is very similar to that of the polybutyl acrylate homopolymer estimated to be about 0.21 (1). ... 

Poly vinyl Acetate, Acrylates, Co-Polymers Sequestrants - Various types... 

Vinyl Acetate/Acrylic Co-Polymer (Polyco 2151, (Borden)... 

Since MIPs are acrylic co-polymers they possess many of the attributes that make this type of polymer such a useful material. They are highly resistant to physical factors such as temperature and pressure extremes, they cope well with mechanical stress and they are chemically inert, coping with acids, bases and most organic solvents without loss of selectivity. Moreover, shelf life at room temperature is measured in years and with minimal care MIPs can cope with long periods of continual use [17]. 

B.S. Kaith, and A.S. Singha, "Physico-chemico-thermal transformation in waste biomass to novel regenerated Hfbfscws sabdariffa-g-poly (methyl acrylate) co-polymers" International Conference on Design of Biomaterials (BIND-06), IIT-Kanpur, 2006. 

Butyl Acrylate/Acrylic Acid Polymers Dissolved in Monomers Acrylic (Co)Polymers... 

Acrylic Co-polymers based on multifunctional monomers, such acrylates and methacrylates... 

The spectra of random acrylic co-polymers display the monomer-specific features of the components together with fragment ions that reflect the linking of the different monomers in the chain. These are the equivalent of the multiple repeat unit ions from a homopolymer, but now the monomers need not be the same. In all cases the negative ion spectra are the most informative. Thus, for example, the [2M — 15] ion from a methacrylate homopolymer could appear as [2Mi —15] , [2M2—15] , or [M1M2 — 15], where Mj and M2 are the two monomers in a random co-polymer. The spectra of co-polymers in general are discussed in more detail below. 

EO-CHR with ABS, HIPS, MBS, SMA or PS/PPE, and an acrylic (co)polymer Rapid dissipation of static charge, reduced delamination, and unproved ductility Gaggar et al. 1988 1989... 

Internally plasticized n. When a product is synthesized from a reaction involving two or more raw materials, it may be said to be internally plasticized if one of the raw materials is able to confer plasticity or flexibility to it. In other words, the product is plasticized because it is build up from a component, which is naturally plastic. For example, an oil-modified alkyd, in which phthalic anhydride and glycerol are combined with drying oil fatty acids, is internally plasticized by reason of the presence of the fatty acid component. If a Congo varnish were made by interaction of run Congo and linseed oil monoglyceride, it could be described as internally plasticized, in contrast to a varnish made by simple dissolution of run Congo in linseed oil, which would be externally plasticized. Also a polyvinyl acetate-acrylic co-polymer is internally plasticized while a polyvinyl acetate homopolymer, into which a plasticizer has been stirred, is externally plasticized. 

Vinyl resins (1934) n. According to common chemical nomenclature, all resins and polymers made from monomers containing the vinyl group, H2C=CHX. In the chemical literature, polystyrene, polyolefins, polymethyl methacrylate and many other styrenic, ethenic, and acrylic co-polymers are classified as vinyls. In the plastics literature, the above materials are given their own classifications and the term vinyl is restricted to compounds in which X, above, is not H, a hydrocarbon radical, nor an acrylic-type ester. In daily use, the term vinyl plastics refers primarily to polyvinyl chloride and its co-polymers, and secondarily to the following polyvinyl acetal, polyvinyl acetate, poly-vinyl alcohol, polyvinyl but-yral, poly(n-vinylcar-bazole), polyvinyl dichloride, polyvinyl formal, polyvinylidene chloride, polyisobutylvinyl ether, and poly (1-vinylpyrrolidone). Mishra MKM, Yagd Y (1998) Handbook of vinyl polymerization. Marcel Dekker, New York. 

Oguri and co-workers [145] used Curie Point pyrolysis-GC to determine the composition of an uncured polyester resin comprising an acrylate co-polymer, a crosslinked accelerator and various additives. 

The Py-GC-MS techniqne has also been applied to identification of polar monomers in polyacrylate co-polymers [9], acrylamide monomer in emulsion co-polymers [10], nnsatnrated acids in acrylic co-polymers [11]. 

The author also investigated the comparative effects of physical and chemical monomer reduction (stripping) on chloromethyl and methyl isothiazolinones in a polyvinyl acetate/butyl acrylate co-polymer dispersion in a large scale plant trial. Results are detailed in Table 16 and show that even under apparently strongly oxidising conditions CIT was degraded by up to 75% when redox monomer reduction was used. In comparison no such effect was seen with the physically stripped samples. 

These microspheres are precisely calibrated, spherical, hydrophilic, microporous beads made of tris-acryl co-polymer coated with gelatin. They come in defined range of sizes, ranging from 40 to 1200 pm in diameter. Their smooth hydrophilic surface, deformability and minimal aggregation tendency have been shown to result in a lower rate of catheter occlusion and more distal penetration into the small vessels [32]. Their efficacy has been evaluated in several conditions, and vdien compared to the standard polyvinyl alcohol particles (PVA) particles, a deeper penetration and embolization of smaller and more peripheral vessels may be achieved. This distal embolization may limit the development of any collateral blood supply. Also, in a study where PVA particles and tris-acryl microspheres of similar size were compared, the level of vascular occlusion with calibrated tris-acryl microspheres precisely correlated with particle size whereas the level of vascular occlusion with PVA particles did not. Another study has demonstrated that in embolized tumors. 

Acrylic latexes are high MW acrylic (co)polymer particles dispersed in water. Synthetic latexes are prepared by a radical polymerization mechanism using an emulsion polymerization technique. The emulsion polymerization is carried out in water using monomer(s), surfactant (emulsifier) and water-soluble initiator. In a typical manufacturing process, an initiator and a separate emulsion of monomer(s) in water are slowly added to a reaction vessel containing water and emulsifier, at a predetermined rate. Polymerization of monomers occurs within tiny pockets formed by aggregation of emulsifier molecules, called micelles, resulting in formation... 

We have a solid substrate - a flame-treated polypropylene (PP) film coated with a polymer - that is a vinyhdene chloride/methyl acrylate co-polymer. The surface of two sohds, coating-PP, is immersed in a solution of a surfactant, SDS (this is the weU-known sodium dodecyl sulfate). Is there a dangCT of separation of the two solids due to the surfactant Use the data available in the table below for the three mateials and assume the vahdity of the Owens-Wendt theory (Chapter 3). 

Half of the polymer latexes synthesized by emulsion polymerization are commerdalized as waterborne dispersions and the rest as dry polymer. The main polymer families produced are based on (1) styrene-butadiene, (2) acrylonitrile-butadiene, (3) chloroprene, (4) vinyl chloride, (5) VAc and its copolymers, and (6) acrylic (co)polymers. ... 

These acrylate-co-polymer beads are macroporous. hydrophilic and possess functional hydroxyl groups for ligand attachment. The main feature of this gel is its extremely low back-pressure due to the unique monosized character of the perfectly spherical particles. Some properties of this gel are shown in Table 1. 

The epoxy is dissolved in the BDG at 122°C to produce an epoxy solution, the concentrated (83%) phosphoric acid is then added under agitation, then a further addition of BDG is added. Then mixture is agitated and held at 123°C over a period of 30 minutes, cooled to 121°C, and DIW (deionised water) is added over a period of 10 minutes. The mixture is held under agitation at 124°C for two hours, then the acrylic co-polymer(s) are mixed in over a period of 30 minutes at a temperature of 124°C. Finally the mixture is reduced in viscosity and a water compatible dispersion is produced, with the addition of the amine mixture. It should be noted the co-polymer should be added in the correct order otherwise the dispersion will prove to be unstable. 

The liquid epoxy, diphenylolpropane, benzoic acid and butyl glycol are mixed together, heated to 130°C, allowed to exotherm to 200°C, then held at 165 C for two hours after the peak exotherm. The resulting reaction product is then cooled, with the addition of n-butanol to -100°C. The acrylic co-polymer and DIW are mixed together and held under reflux at 95°C for twenty five minutes. The acrylic resin solution is added to the acid capped epoxy under agitation at 70-80°C over a period of approximately one hour. The resulting aqueous dispersion can be neutralised with a tertiary amine used to formulate can coating lacquers. 

The free carboxyl groups on the acrylic graft co-polymer can be neutralised with a tertiary amine which can activate an esterification reaction between the acrylic carboxyl moieties and the epoxy reactive sites. On the addition of de-ionised water, the free carboxyl moieties of the acrylic co-polymer react with the amine to produce a water soluble or dispersible quaternary ammonium hydrogel of the modified epoxy. 

Ng, W. K., Tam, K. C., and Jenkins, R. D. 2001. Rheological properties of methacrylic acid/ethyl acrylate co-polymer Comparison between an unmodified and hydrophobi-caUy modified system. Polymer 42 249-259. 

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