Method for producing higher (meth)acrylic acid esters

    公开(公告)号:US06818791B2

    公开(公告)日:2004-11-16

    申请号:US10450438

    申请日:2003-06-18

    CPC classification number: C07C67/08 C07C69/54

    Abstract: The invention relates to a method for producing (meth)acrylic acid esters by transesterification of the (meth)acrylic acid with a higher alkanol in the presence of an acid catalyst, at least one polymerization inhibitor and one organic solvent that forms an azeotropic mixture with water. The reaction mixture is heated to the boiling point of the mixture in a reactor that comprises a distillation unit with a column and a condenser. The content of the reactor is recirculated via an external evaporator and heated to the boiling point, and the azeotropic mixture is distilled off. The organic solvent forms a reflux and at least a part of the solvent reflux is recirculated between the reactor and the evaporator. The inventive method allows for the production of higher (meth)acrylic acid esters in a reactor with a circulation evaporator without using copper salts as the polymerization inhibitors.

    Preparation of (meth)acrylates
    2.
    发明授权
    Preparation of (meth)acrylates 失效
    (甲基)丙烯酸酯的制备

    公开(公告)号:US06512138B1

    公开(公告)日:2003-01-28

    申请号:US09567983

    申请日:2000-05-10

    CPC classification number: C07C67/08 C07C67/327 C07C69/54

    Abstract: The process for the esterification of (meth)acrylic acid with an alkanol in the presence of an esterification catalyst, in which unconverted starting compounds and the (meth)acrylate to be formed are separated off by distillation and an oxyester-containing bottom product is formed and is separated off, and (a) in the bottom product separated off, the oxyesters present are cleaved, if required after the addition of (meth)acrylic acid and/or oligomeric (meth)acrylic acid, directly in the presence of acid catalysts differing from (meth)acrylic acid and/or oligomeric (meth)acrylic acid, and the cleavage products are removed, a cleavage residue remaining, or (b) the oxyesters are first removed by distillation from the cleavage product separated off, a distillation residue remaining, and the oxyesters removed are cleaved, if required after addition of (meth)acrylic acid and/or oligomeric (meth)acrylic acid, in the presence of acid catalysts differing from (meth)acrylic acid and/or oligomeric (meth)acrylic acid, and the cleavage products are removed, a cleavage residue remaining, is carried out in such a way that the cleavage residue obtained in step (a) or the cleavage residue obtained in step (b) is hydrolytically cleaved together with the resulting distillation residue in the presence of water and acids or bases.

    Abstract translation: 在酯化催化剂存在下,(甲基)丙烯酸与烷醇的酯化反应的方法,其中未转化的起始化合物和待形成的(甲基)丙烯酸酯通过蒸馏和含有含氧酯的底部产物分离出来 并分离出来,(a)在分离出的底部产物中,如果需要,在酸催化剂存在下直接加入(甲基)丙烯酸和/或低聚(甲基)丙烯酸后,存在的氧化酯被切割 与(甲基)丙烯酸和/或低聚(甲基)丙烯酸不同,除去裂解产物,剩余的裂解残余物或(b)氧酯首先通过蒸馏从分离的裂解产物中除去,蒸馏残余物 除去(甲基)丙烯酸和/或低聚(甲基)丙烯酸之外,如果需要,在不同于(甲基)丙烯酸和/或低聚(甲基)丙烯酸的酸催化剂的存在下, 甲基)丙烯酸,并且去除裂解产物,残留切割残余物,使得步骤(a)中获得的裂解残基或步骤(b)中获得的裂解残基与 在水和酸或碱的存在下产生蒸馏残余物。

    Alicyclic compound and curable resin composition
    3.
    发明授权
    Alicyclic compound and curable resin composition 失效
    脂环族化合物和可固化树脂组合物

    公开(公告)号:US06365771B1

    公开(公告)日:2002-04-02

    申请号:US09786443

    申请日:2001-03-14

    Abstract: Decane compound or decene compound shown in the formula [1] below wherein A1 and A2 are independently hydrogen or (meth)acryloyl group or 2-vinyloxyethyl group; and the dotted line is single bond or double bond with the proviso that A1 and A2 are not hydrogen at the same time; and curable resin composition containing said compound therein. The compound are suitable as the photo-monomer for resist raw materials because of high clarity at short wavelength ultraviolet light, dry etching resistance, adhesive property for the substrate and high solubility in alkaline developing solution in addition to high sensitivity and greater resolution; as the monomer for optic raw materials and disk overcoat materials because of high clarity, low birefringence and low water absorption rate; and as the monomer for the coating raw materials such as EB curable coating raw materials because of high reactivity, high wear characteristics and water resistance.

    Abstract translation: 式(1)所示的癸烷化合物或癸烯化合物,其中A1和A2独立地为氢或(甲基)丙烯酰基或2-乙烯氧基乙基; 并且虚线是单键或双键,条件是A1和A2不同时为氢; 和含有该化合物的可固化树脂组合物。由于在短波长紫外光下的高透明度,耐干蚀刻性,基板粘合性和在碱性显影液中的高溶解度,因此该化合物适合作为抗蚀剂原料的光单体 灵敏度高,分辨率更高; 作为光学原料和圆盘外套材料的单体,因为透明度高,双折射低,吸水率低; 并且作为涂料原料如EB固化涂料原料的单体,因为反应性高,耐磨性和耐水性高。

    Fluorine-containing acrylate monomers
    4.
    发明授权
    Fluorine-containing acrylate monomers 有权
    含氟丙烯酸酯单体

    公开(公告)号:US06784312B2

    公开(公告)日:2004-08-31

    申请号:US10198044

    申请日:2002-07-19

    Abstract: The present invention relates to a polymerizable monomer represented by the general formula (1), wherein R1 is a hydrogen atom, a halogen atom, a hydrocarbon group or a fluorine-containing alkyl group; R2 is a straight-chain or branched alkyl group, a cyclic alkyl group, an aromatic group, or a substituent having at least two of these groups, the R2 being optionally partially fluorinated; R3 is a hydrogen atom, a hydrocarbon group that is optionally branched, a fluorine-containing alkyl group, or a cyclic group having an aromatic or alicyclic structure, the R3 optionally containing a bond of an oxygen atom or carbonyl group; and n is an integer of 1-2.

    Abstract translation: 本发明涉及由通式(1)表示的可聚合单体,其中R 1是氢原子,卤素原子,烃基或含氟烷基; R 2是直链或支链烷基,环状烷基,芳族基团或具有这些基团中至少两个的取代基,R 2任选地被部分氟化; R 3是氢原子,任选支链的烃基,含氟烷基或具有芳族或脂环结构的环状基团,R 3任选地含有氧原子或羰基的键 组; n为1-2的整数。

    Preparation of carboxylic esters catalyzed by a sulphonic acid
    5.
    发明授权
    Preparation of carboxylic esters catalyzed by a sulphonic acid 失效
    由磺酸催化的羧酸酯的制备

    公开(公告)号:US06673959B2

    公开(公告)日:2004-01-06

    申请号:US09878244

    申请日:2001-06-12

    Inventor: Christian Gancet

    CPC classification number: C07C67/08 C07C69/30 C07C69/54

    Abstract: The preparation of a carboxylic ester by direct reaction of a carboxylic acid and an alcohol catalyzed by a sulphonic acid R—SO3H is carried out in the presence of a solid comprising tertiary amine functions.

    Abstract translation: 通过羧酸和由磺酸R-SO 3 H催化的醇的直接反应制备羧酸酯在包含叔胺官能团的固体存在下进行。

    Method for preparing (meth) acrylic acid ester
    6.
    发明授权
    Method for preparing (meth) acrylic acid ester 有权
    (甲基)丙烯酸酯的制备方法

    公开(公告)号:US06649787B1

    公开(公告)日:2003-11-18

    申请号:US09684396

    申请日:2000-10-10

    CPC classification number: C07C67/08 C07C67/54 C07C69/54

    Abstract: An improvement is provided in a method for preparing an (meth)acrylic acid ester comprising an esterification step for forming the (meth)acrylic acid ester by esterification reaction between (meth)acrylic acid and the corresponding aliphatic alcohol having 1 to 4 carbon atoms in the presence of an acidic catalyst, and a separation-purification step comprising an acid-separating column, a low boiling matter-separating column and a rectification column for separating and purifying the (meth)acrylic acid ester from the (meth)acrylic acid ester-containing mixture obtained in the esterification step. This improvement lies in that by circulating the bottom residue of the rectification column into the esterification step and/or the separation-purification step, the remaining polymerization inhibitor in the bottom residue is effectively reused and the remaining (meth)acrylic acid ester in the bottom residue is efficiently recovered.

    Abstract translation: 在(甲基)丙烯酸酯的制备方法中提供了改进,所述方法包括通过(甲基)丙烯酸和相应的具有1至4个碳原子的脂族醇之间的酯化反应形成(甲基)丙烯酸酯的酯化步骤 酸性催化剂的存在和分离纯化步骤,其包括酸分离塔,低沸点物分离塔和精馏塔,用于从(甲基)丙烯酸酯分离和纯化(甲基)丙烯酸酯 在酯化步骤中获得的混合物。 这种改进在于,通过使精馏塔的底部残留物循环到酯化步骤和/或分离纯化步骤中,底部残留物中的剩余聚合抑制剂被有效地再利用,并且底部的剩余的(甲基)丙烯酸酯 残留物有效回收。

    (Meth)acryloyl-group-containing carbamoyl halides and production process therefor
    7.
    发明授权
    (Meth)acryloyl-group-containing carbamoyl halides and production process therefor 失效
    (甲基)丙烯酰基的氨基甲酰卤及其制备方法

    公开(公告)号:US06646156B2

    公开(公告)日:2003-11-11

    申请号:US09835321

    申请日:2001-04-17

    CPC classification number: C07C219/08 C07C271/04

    Abstract: The present invention provides a (meth)acryloyl-group-containing carbamoyl halide represented by the following formula (1): where R1 represents a hydrogen atom or a methyl group; R2 represents a linear or branched C1-C10 alkylene group; R3 represents a C1-C5 alkyl group; and X represents a halogen atom. The present invention also provides a production process for the halide.

    Abstract translation: 本发明提供由下式(1)表示的(甲基)丙烯酰基的氨基甲酰卤:其中R1表示氢原子或甲基; R2表示直链或支链C1-C10亚烷基; R3表示C1-C5烷基; X表示卤素原子。 本发明还提供了卤化物的制备方法。

    Process for the manufacture of 2-ethylhexyl acrylate

    公开(公告)号:US06603036B2

    公开(公告)日:2003-08-05

    申请号:US10113924

    申请日:2002-04-02

    CPC classification number: C07C67/08 C07C67/58 C07C69/54

    Abstract: 2-Ethylhexyl acrylate is obtained by esterification of acrylic acid (AA) with 2-ethylhexanol (2-EtHexOH), in the presence of at least one stabilizer for AA, with H2SO4 as catalyst, the crude reaction mixture (B1) obtained comprising the desired acrylate, 2-EtHexOH, AA, 2-ethylhexyl hydrogensulphate (2-EtHexSO4H), traces of H2SO4 and impurities. (B1) is washed with water in an extraction column C2 to remove, at the bottom, the aqueous phase (A1), the top organic phase (O2) being sent to a topping column C3 to obtain, at the top, the AA and the 2-EtHexOH, which are recycled to the esterification, the topped desired acrylate being sent to a distillation column C4, from where it exits, purified from the heavy products; a stage of hydrolysis of the 2-EtHexSO4H present in (A1) being carried out to form, in this phase, 2-EtHexOH and H2SO4, the acidic entities resulting from the hydrolysis being neutralized by introduction of a base into the medium, and the resulting aqueous phase (A3) being sent to the recovery of the 2-EtHexOH in a distillation column C1.

    Photocurable halofluorinated acrylates
    10.
    发明授权
    Photocurable halofluorinated acrylates 失效
    可光固化的氟氟化丙烯酸酯

    公开(公告)号:US06534671B2

    公开(公告)日:2003-03-18

    申请号:US09880435

    申请日:2001-06-13

    Abstract: This invention relates to a novel class of halofluorinated acrylates and more particularly to chlorofluorinated or bromofluorinated acrylates characterized by a chlorofluorinated or bromofluorinated alkylene moiety with acrylate functions at both terminals. These chlorofluorinated acrylates may be photocured in the presence of a photoinitiator into transparent polymers useful as optical waveguiding materials.

    Abstract translation: 本发明涉及一类新型卤代氟化丙烯酸酯,更具体地说涉及氟氯化或溴氟化丙烯酸酯,其特征在于在两端具有丙烯酸酯功能的氯氟化或溴氟化亚烷基部分。 这些氯氟化丙烯酸酯可以在光引发剂存在下光固化成用作光波导材料的透明聚合物。

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