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Methacrylic acid, abbreviated MAA, is an organic compound with the formula CH 2 =C(CH 3)CO 2 H. This colorless, viscous liquid is a carboxylic acid with an acrid unpleasant odor. It is soluble in warm water and miscible with most organic solvents.
Recent progress has been made for (partially) ionized MAA by introducing a new rate law for propagation where electrostatic and non-electrostatic effects are explicitly considered. [7] In addition, the rate constant of propagation (kp) during free radical polymerization of methacrylic acid is dependent on the monomer concentration.
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As developed by Atochem and Röhm, isobutyric acid is produced by hydrocarboxylation of propene, using HF as a catalyst: CH 2 =CHCH 3 + CO + H 2 O → (CH 3) 2 CHCO 2 H. Oxidative dehydrogenation of the isobutyric acid yields methacrylic acid. Metal oxides catalyse this process: [10] (CH 3) 2 CHCO 2 H + O → CH 2 =C(CH 3)CO 2 H + H 2 O
An enteric coating is a polymer barrier applied to oral medication that prevents its dissolution or disintegration in the gastric environment. [1] This helps by either protecting drugs from the acidity of the stomach, the stomach from the detrimental effects of the drug, or to release the drug after the stomach (usually in the upper tract of the intestine). [2]
Active side groups are attached to the polymer backbone to generate antimicrobial activity. Pendent groups, antibiotic drugs, or inorganic particles can be adjoined to the polymer. [1] Pendant groups that are attached to the polymer backbone include quaternary ammonium, hydroxyl groups with an organic acid, and others. [1]
People are ingesting borax. Also known by its chemical name sodium borate decahydrate, borax is a salt typically used to kill ants and boost laundry detergent, among other household cleaning needs ...
Comonomers such as methacrylic acid can be added to increase the glass transition temperature of the polymer for higher temperature use such as in lighting applications. Plasticizers may be added to improve processing properties, lower the glass transition temperature, improve impact properties, and improve mechanical properties such as elastic ...