crotonic acid


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crotonic acid

/cro·ton·ic ac·id/ (kro-ton´ik) an unsaturated fatty acid found in croton oil.
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The complexes formation of divalent metal ions M(II) {M= Pb, Cd and Hg} with a new copolymer based on acrylic and crotonic acids was investigated in aqueous media with NaN[O.
It deals with the synthesis of copolymer based on acrylic and crotonic acids.
The olefinically unsaturated monomer corresponds to one or more monomers selected from at least one olefinically unsaturated monomer selected from the group consisting of: a) mono- and di-esters of crotonic acid, cinnamic acid, fumaric acid, maleic acid, citraconic acid, and itaconic acid; b) carboxyfunctional monomers; c) N-vinyl caprolactam, vinyl phosphonates, N-vinyl formamides, N-vinyl acetamides, hydroxypropyl acrylates and methacrylates, monoacrylates and monomethacrylates of polyalkylene glycols, acrylates, methacrylates, acrylic acid and methacrylic acid amides containing amine groups; d) vinyl esters corresponding to general formula (I) CH2xCH--O--C(O)--R1, with R1=C11-21.
Copolymers of vinyl esters and crotonic acid present as film-forming agents or binders in hair sprays and hair setting lotions very frequently present the drawback that they still contain residual unreacted monomers and impurities.
That is the case of copolymers of vinyl esters and crotonic acid produced by bulk or solution polymerization.