2-hydroxy propyl methacrylate

Hydroxyethyl methacry late 2-Hydroxy propyl methacrylate... 

Fig. 1. Readily available methacrylate based monomers. MAA methacrylic acid, MMA methyl methacrylate, HEMA 2-hydroxyethyl methacrylate, HPMA one isomer in commercial 2-hydroxy-propyl methacrylate, DMAEMA dimethylaminoethyl methacrylate...

Here advantage is taken of modification by swelling and adsorption of chemically reactive modifiers and catalysts into the polymer to generate different functional groups. It has been shown that the pendant hydroxyl groups of polyvinyl alcohol (PVA) and poly-2-hydroxy propyl methacrylate can partially be reacted with acetic or benzoic anhydride or phenyl isocyanate to form new structures [44], to form side groups with ester linkages. As a result a copolymer of is produced ... 

FIGU RE 2.4 Typical unsaturated monomers A = Methaciylic acid B = Methyl methacrylate C = Butyl methacrylate D = Ethyl acrylate E = 2-Ethyl hexyl acrylate F = 2-Hydroxy propyl methacrylate G = Styrene H =Vinyl acetate. 

Dispersions of copolymers of butadiene with acrylic acid or methacrylic acid in aqueous potassium hydroxide have been mentioned in the patent literature" as a dip for adhering rayon tire cord to rubber. The effect is most evident when carboxyl groups are present in the adhesive, the tie cement, and the cover stocks. The adhesive may be applied as latex, aqueous dispersion, or cement. A patent issued to the Dunlop Company Ltd." describes the use of a styrene-butadiene-itaconic acid copolymer with Gen-Tac Latex (GenCorp) in formulating an RFL (resorcinol formaldehyde latex) type adhesive for bonding a natural rubber compound to Nylon 66 and rayon tire cords. Brodnyan" also claims carboxylic adhesives for rayon, nylon, and Dacron cords. In this case, the tire cords were treated with a mixed polymer latex containing resorcinol-formaldehyde condensate, a butadiene-vinyl pyridine copolymer, an SBR copolymer, and a multifunctional copolymer from methyl acrylate, 2-hydroxy propyl methacrylate, and acrylic acid. A different approach was reported by Badenkov" whereby rayon or nylon tire cords were coated with... 

The base methacrylate monomers utilized were a polyethyleneglycol dimethacrylate (PEGMA - produced by Loctite), an ethoxylated bisphenol—A dimethacrylate (EBIPMA - produced by AKZO), a urethane methacrylated capped poly(butadiene acrylonitrile) polyol, and hydroxy-propyl methacrylate (HPMA - Rohm and Haas). The following maleimide capped monomer/prepolymers were examined N-phenyl maleimide (NPM), meta-phenylene dimaleimide (m-PDM), and a reaction product of methylenedi-aniline and excess methylenedianiline bismaleimide (P-MDA-2MDABM), sold by Rhodia Corp. under the tradename of Keramide... 

The counterrotating and the corotating extruder are compared in Fig. 13.15 for the reactive extrusion of butylmethacrylate with hydroxy-propyl-methacrylate. For this reaction it can be concluded that, at lower throughputs, the extruders are comparable in performance but at higher throughput the conversion in the counterrotating machine... 

In Table 7.33 is shown some results obtained by applying this method to a range of acrylic polymers. The calculated recoveries are greater than 95%, for polymers containing between 10% and 100% acrylic monomer. The method has 99% confidence interval of 0.8. The presence of comonomers such as styrene, acrylonitrile, vinyl acetate, acrylamide or acrylic acid does not change the recovery of acrylate or methacrylate esters. Non-quantitative results are obtained, however, for polymers containing hydroxy-propyl methacrylate. 

Fig. 4. Temperature dependence of the shear loss modulus of poly(methyl methacrylate) (1), poly(n-propyl methacrylate) (2), poly(2-hydroxyethyl methacrylate) (3), poly(5-hydroxy-3-oxapen-tyl methacrylate) (4), and poly(8-hydroxy-3,6-dioxaoctyl methacrylate) (5)...

A significant number of works are concerned with the development of new membranes for the separation of mixtures of aromatic/alicyclic hydrocarbons [10,11,77-109]. For example, the following works can be mentioned. A mixture of cellulose ester and polyphosphonate ester (50 wt%) was used for benzene/cyclohexane separation [113]. High values of the separation factor and flux were achieved (up to 2 kg/m h). In order to achieve better fluxes and separation factors the attention was shifted to the modification of polymers by grafting technique. Grafted membranes were made of polyvinylidene fluoride with 4-vinyl pyridine or acrylic acid by irradiation [83]. 2-Hydroxy-3-(diethyl-amino) propyl methacrylate-styrene copolymer membranes with cyanuric chloride were prepared, which exhibited a superior separation factor /3p= 190 for a feed aromatic component concentration of 20 wt%. Graft copolymer membranes based on 2-hydroxyethyl methylacrylate-methylacrylate with thickness 10 pm were prepared [85]. The membranes yielded a flux of 0.7 kg/m h (for feed with 50 wt% of benzene) and excellent selectivity. Benzene concentration in permeate was about 100 wt%. A membrane based on polyvinyl alcohol and polyallyl amine was prepared [87]. For a feed containing 10 wt% of benzene the blend membrane yielded a flux of 1-3 kg/m h and a separation factor of 62. 

METHACRYLIC ACID, 2-HYDROXY-PROPYL ESTER (27813-02-1 923-26-2) C7H 03 Forms explosive mixture with air (flash point 250°F/121°C Fire Rating 1). Contact with strong oxidizers may cause fire and explosions. May polymerize when hot or when exposed to ultraviolet light or free-radical catalysts. Ground all equipment containing this material. On small fires, use dry chemical powder (such as Piuple-K-Powder), foam, or COj extinguishers. METHACRYLIC ACID, ISOBUTY ESTER (97-86-9) CgH,402 ... 

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