5- Acryl thioglycolic acid

Acetylene Thioglycolic acid S-Acryl thioglycolic acid... 

Compound 9 has also been obtained via nucleophilic displacements by thioglycolic acids on activated halobenzenes12,13 and Michael addition to acrylate esters14,17,18 or acrylonitriles19 with subsequent hydrolysis. 

The two extremes on the styrene-butadiene block copolymer composition scale are homopolymers of butadiene or styrene, respectively. To test the usefulness of homopolymers as dispersants, polybutadiene (PB) was carboxylated by adding thioglycolic acid, and polystyrene (PS) having carboxylic groups was prepared by copolymerizing small amounts of acrylic acid (AA) into the styrene chain. Adsorption experiments with these carboxylated homopolymers are listed in Table V. In the first... 

Fig. 6.8 (a) Poly(acrylic acid)-Cysteine (Bemkop-Schniirch 2005) (b) Carboxymethylcellu-lose-Cysteine (Bemkop-Schniirch 2005) (c) Chitosan-Thioglycolic acid (Bernkop-Schniirch 2005) (d) Chitosan-Cystein (Bemkop-Schniirch 2005) (e) Chitosan-Cystein (Bernkop-Schniirch 2005)... 

TFEA. See 2,2,2-Trifluoroethyl acrylate TFE/HFP. See Fluorinated ethylene/propylene TFEM. SeeTrifluoroethyl methacrylate TFP. See 2,2,3,3-Tetrafluoro-1-propanol 3,3,3-TFP. See 3,3,3-Trifluoropropene TGA. See Thioglycolic acid TGA 2. See Diethylene glycol diacrylate TGDDM. See Tetraglycidyl-4,4 -methylene dianiline... 

With thioglycolic acid as a chain-transfer agent, macromonomers are prepared from dimethylaminoethyl methacrylate and other acrylate and methacrylate derivatives (539). lodoacetic acid is used as the transfer agent for polystyrene macromonomers (540). 

Ion-exchange resins derived from chloromethyl acrylate and thioglycolic acid (75) and a mercaptan-containing polyma frtxn copolymer of vinyl acetate with l,3-dichloro-2-butene (76) have also been reported. 

Specifically MSA has been found to be more effective than -toluenesulfonic acid and sulfuric acid in preparing dioctyl phthalate (405). A U.S. patent also discloses its use to prepare light-colored fatty esters (406). It is also important as a catalyst to prepare acrylates, methacrylates, adipates, phthalates, trimeUitates, thioglycolates, and other esters. 

Direct synthesis is used for polyelectrolytes such as carboxy polymers, e.g., poly(acrylic acid) and poly (methacrylic acid), which are probably the most common ionic polymers of all. Post-functionahzation of pre-formed polymers is a frequently used synthetic method, provided that the polymer is sufficiently reactive. Common examples are the sulfonation of polystyrene and the grafting of thioglycollic add on to polybutadiene using free radicals. 

Synthesis.—The reactions of thiophen-2- and 3-acrylic acid with thionyl chloride in the presence of pyridine yield a mixture of chlorinated derivatives of thieno[3,2-b]thiophen-2-carboxylic acid and thieno[2,3-b]-thiophen-2-acrylic acid. From thiophen-2,5-diacrylic acid, (241) was obtained. Aromatization of (66) gives thieno[2,3-b]thiophens. Reaction of (242) with methyl thioglycolate yielded (243)." Ethylthiophen was... 

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