kuraray | MMA Monomer Manufacturing Tie Dissolved | 2005 | News ...

In this study, polymethacrylate polymers were synthesized by free-radical polymerization for use as pour point depressants in lubricant oil, and their low-temperature properties were investigated. Four methacrylate monomers were synthesized by the esterification of methyl methacrylate (MMA) with four kinds of fatty alcohols. The purification step was performed to prepare the pure monomers. Two polymerization experiments were carried out with four kinds of methacrylate monomers obtained previously and MMA. Copolymers, which were made from one kind of monomer and MMA, and terpolymers, which were made from two kinds of monomers and MMA, were prepared. The molecular structures of the synthesized methacrylate monomers and polymethacrylate polymers were verified by 1H-NMR, and the molecular weight data were obtained by gel permeation chromatography. The pour points of the base oils containing 0.1 wt % polymethacrylate polymers were measured according to ASTM D 97-93. The pour points of most base oils containing each polymer decreased compared to that of the pure base oil. Particularly, poly(dodecyl methacrylate-co-hexadecyl methacrylate-co-methyl methacrylate), made of dodecyl methacrylate, hexadecyl methacrylate, and MMA at a molar ratio of 3.5: 3.5: 3, showed the best low-temperature properties. This terpolymer dropped the pour point of the base oil by as much as 23°C, and its yield was 93.5%.

kuraray | Prices of MMA Monomer and MAA Revised ...

Polymerization of MMA using CDB as RAFT agent: The polymerization result can be summarized in .

Release | Expansion of MMA monomer and acrylic resin ...

They are replacing rod lenses made of glass.

Some of the aforementioned products where Mitsubishi Rayon has clear leadership include plastic optical fibers, rod lens arrays, extra-thin methacrylic sheets (0.5-1.2 millimeters thick), and methacrylic sheets for aquarium tanks (extra-thick).

There is a synergistic effect among MMA products.

Feasibility Study for MMA Monomer Plant in Taiwan ...

From , the polymerization without transfer agent yielded higher conversion and common polymers with much higher molecular weights and broader molecular weight distributions were obtained. In the other hand, when 2-bromoethanol was used, the polymerization grows in the direct proportion with the time without induction phase. shows (a) time-conversion curves and (b) Mn-conversion curves for the polymerization of MMA with a large amount of 2-bromoethanol. The molecular weight of MMA was also increased gradually with the monomer conversion. Compare to the well and versatile transfer agent, a large amount of 2-bromoethanol was needed to control polymerization of MMA, due to intermolecular hydrogen bonding in haloalkyl alcohol.

production process for MMA monomer MMA (methyl methacrylate) monomer at Asahi Chemical is used ...
the two existing plants, LG MMA’s total MMA monomer production capacity will increase to ...

Methacrylate monomers for Synthesis

In 1995, it exited from a joint venture with Mitsubishi Petrochemical in methacrylic acid esters after realizing that it would not be able to achieve technological leadership through differentiation.

The monomer reactivity ratios of NIPAAM and MMA were estimated by the graphical methods according to the Finemann-Ross equation.

METHYL METHACRYLATE, 80-62-6, Acrylic Monomer, ..

The CDB and poly (MMA) were characterized by using 1H NMR spectroscopy (). From the result, the signal can be assigned in the region 1.99, 7.2-7.6 and 7.85 ppm. Since, the signals that are shown between 0.1-1.8 ppm which is the eluent in column chromatography, that is petroleum ether, the evidence that shows that CDB couldn’t be easily purified. However, this factor couldn’t influence the polymerization rate of MMA, since another factor such as oxygen and purity of monomer that playing an important role on polymerization rate.

Nihon Methacryl Monomer ...

Methyl methacrylate | Sigma-Aldrich

AB - In this study, polymethacrylate polymers were synthesized by free-radical polymerization for use as pour point depressants in lubricant oil, and their low-temperature properties were investigated. Four methacrylate monomers were synthesized by the esterification of methyl methacrylate (MMA) with four kinds of fatty alcohols. The purification step was performed to prepare the pure monomers. Two polymerization experiments were carried out with four kinds of methacrylate monomers obtained previously and MMA. Copolymers, which were made from one kind of monomer and MMA, and terpolymers, which were made from two kinds of monomers and MMA, were prepared. The molecular structures of the synthesized methacrylate monomers and polymethacrylate polymers were verified by 1H-NMR, and the molecular weight data were obtained by gel permeation chromatography. The pour points of the base oils containing 0.1 wt % polymethacrylate polymers were measured according to ASTM D 97-93. The pour points of most base oils containing each polymer decreased compared to that of the pure base oil. Particularly, poly(dodecyl methacrylate-co-hexadecyl methacrylate-co-methyl methacrylate), made of dodecyl methacrylate, hexadecyl methacrylate, and MMA at a molar ratio of 3.5: 3.5: 3, showed the best low-temperature properties. This terpolymer dropped the pour point of the base oil by as much as 23°C, and its yield was 93.5%.