2177-70-0Relevant articles and documents
Effect of some parameters on the synthesis and the physico-chemical properties of new amphiphilic starch-g-copolymers
Worzakowska, Marta,Grochowicz, Marta
, p. 344 - 352 (2015)
The detailed studies on the graft copolymerization of phenyl methacrylate onto gelatinized potato starch in water using potassium persulfate as radical initiator were presented. The different reaction parameters such as effect of initiator concentration, starch to monomer ratio, reaction temperature and reaction time were studied in terms of grafting efficiency, grafting percent and percent homopolymer formation. It was found that grafting process of aromatic methacrylate monomer onto potato starch backbone allowed obtaining new amphiphilic copolymers with different physicochemical properties as compared to non-modified starch. The influence of the copolymer structure on the swelling behavior in polar and non-polar solvents, moisture absorbance, gelatinization properties, acid and base resistance, surface morphology and thermal properties was discussed.
Activation of stable polymeric esters by using organo-activated acyl transfer reactions
Kakuchi, Ryohei,Wongsanoh, Kwanjira,Hoven, Voravee P.,Theato, Patrick
, p. 1353 - 1358 (2014)
In this study, we succeeded in the in situ activation of nonactivated ester moieties embedded in polymer structures. Although poly(pentafluorophenyl methacrylate) (PPFPMA) can react with 2-ethylhexylamine at 50 C in the presence of proton scavenger such as NEt3, such conditions were not suitable for poly(phenyl methacrylate) (PPhMA). Nevertheless, the combination of organo-activating agents, namely 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and 1,2,4-triazole (TZ) led to a facile conversion from ester to amide for PPhMA. The reaction between PPhMA and 2-ethylhexylamine was conducted at 120 C in the presence of one equivalent of TZ and three equivalents of DBU and yielded >99% ester conversion to afford corresponding polymethacrylamide derivatives as confirmed by FT-IR and 1H NMR measurements. In addition, poly(2,2,2-trifluoroethyl methacrylate) (PTFEMA) and poly(methyl methacrylate) (PMMA) were also allowed to react with amines in the presence of the organo-activating agents with dramatically increased conversions (>70%).
Cyanide-Free One-Pot Synthesis of Methacrylic Esters from Acetone
Koyama, Minoru,Kawakami, Takafumi,Okazoe, Takashi,Nozaki, Kyoko
, p. 10913 - 10917 (2019/08/02)
Methacrylic esters, represented by methyl methacrylate (MMA), are widely used as commodity chemicals. Here, the one-pot synthesis of methacrylic esters from acetone, a haloform and alcohols in the presence of an organic base is described. Using DBU as the organic base for the reaction of acetone, chloroform and methanol in acetonitrile afforded MMA in 66 % yield. When the solvent was replaced by benzonitrile, the product MMA was successfully purified by distillation. Applicability of this process to various alcohols was also investigated to show ethyl, phenyl, CF3CH2, and n-C6F13CH2CH2 esters were obtained in moderate yields. The use of bromoform instead of chloroform resulted in the improvement of the yield, for example, methyl and n-C6F13CH2CH2 esters up to 81 and 70 %, respectively. The reaction with deuterated starting materials acetone-d6 and MeOH-d4, with DBU in acetonitrile afforded deuterated MMA (MMA-d8) in 70 % yield.
CARBOXYLIC ACID ESTER PRODUCTION METHOD
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Paragraph 0062; 0063; 0067; 0068; 0069; 0070; 0075; 0076, (2019/01/04)
Provided is a production method whereby corresponding carboxylic acid esters can be obtained from a variety of carboxylic acids at a high yield, even under conditions using a simple reaction operation and little catalyst and even if the amount of substrate used is theoretical. A production method for carboxylic acid ester, whereby a prescribed diester dicarbonate, carboxylic acid, and alcohol are reacted in the presence of at least one type of magnesium compound and at least one type of alkali metal compound.
METHOD FOR PRODUCING (METH) ACRYLATE
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Paragraph 0019-0024, (2018/12/05)
PROBLEM TO BE SOLVED: To provide a production method for obtaining (meth) acrylate in high yields, by preventing a large amount of waste from produced from by-products, like the conventional art. SOLUTION: A method for producing (meth) acrylate includes the reaction between a compound represented by the following formula (I) and an aryl alcohol. Preferably, the reaction occurs in the presence of a catalyst of at least one metal compound selected from first Group metal compounds and second Group metal compounds. SELECTED DRAWING: None COPYRIGHT: (C)2019,JPOandINPIT
PREPARATION OF PHENOLIC (METH)ACRYLATES
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Page/Page column 3; 4, (2018/06/12)
A method for preparation of phenolic (meth)acrylates. The method comprises contacting acetic anyhydride, a phenolic compound and (meth)acrylic acid to form a reaction mixture.
METHOD FOR PRODUCING CARBOXYLIC ACID ANHYDRIDE AND METHOD FOR PRODUCING CARBOXYLIC ACID ESTER
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Paragraph 0082; 0083; 0085, (2017/04/18)
Provided is a production method whereby corresponding carboxylic acid anhydrides and carboxylic acid esters can be obtained at high yield from various carboxylic acids even without a solvent and near room temperature. A method for producing a carboxylic acid anhydride represented by formula (II), the method comprising reacting a compound represented by formula (I) and a carboxylic acid in the presence of a Group II metal compound having an ionic ligand containing an oxygen atom. A method for producing a carboxylic acid ester, the method comprising reacting a carboxylic acid anhydride produced by the aforementioned method and an alcohol. In formula (I), R1 represents a C1-20 hydrocarbon group. In formula (II), R2 represents a C1-20 hydrocarbon group.
METHOD FOR PRODUCING CARBOXYLIC ESTER
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Paragraph 0059; 0060, (2018/04/18)
PROBLEM TO BE SOLVED: To provide a method that can efficiently produce carboxylic ester even with a small amount of use of catalysts at room temperature and normal pressure (25°C, 1 atm). SOLUTION: This invention relates to a method for producing carboxylic ester by the reaction between a compound represented by the following formula (I), carboxylic acid anhydride and alcohol, the reaction to occur in the presence of at least one Group I metal compound and at least one Group II metal compound [in formula (I), R1 and R2 are a C1-C20 hydrocarbon group]. SELECTED DRAWING: None COPYRIGHT: (C)2018,JPOandINPIT
PHENYL (METH)ACRYLATE PRODUCTION METHOD AND PHENYL (METH)ACRYLATE COMPOSITION
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Paragraph 0114-0115, (2016/09/26)
Provided is a method that can produce phenyl(meth)acrylate inexpensively and at high yields. The phenyl(meth)acrylate production method of the present invention reacts (meth)acrylic acid with carbonic acid diphenyl. Further, the phenyl(meth)acyrlate composition of the present invention contains 90-99.999 wt % phenyl(meth)acrylate and 0.001-10% carbonic acid diphenyl. Or, the phenyl(meth)acrylate composition of the present invention contains 90-99.999 wt % phenyl(meth)acrylate and 0.001-10 wt % of a specified compound.
PHENYL(META)ACRYLATE PRODUCTION METHOD AND PHENYL(META)ACRYLATE COMPOSITION
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Paragraph 0128-0132, (2016/11/02)
Provided is a method that can produce phenyl(meth)acrylate inexpensively and at high yields. The phenyl(meth)acrylate production method of the present invention reacts (meth)acrylic acid with carbonic acid diphenyl. Further, the phenyl(meth)acyrlate composition of the present invention contains 90-99.999wt% phenyl(meth)acrylate and 0.001-10% carbonic acid diphenyl. Or, the phenyl(meth)acrylate composition of the present invention contains 90-99.999wt% phenyl(meth)acrylate and 0.001-10wt% of a specified compound.