Preparation method of tert-butyl (methyl)acrylate
A technology of tert-butyl acrylate and acrylic acid, which is applied in the chemical field of preparing ester by enoic acid method, can solve the problems of low yield, equipment corrosion, large steric hindrance effect, etc., and achieves the effect of simplifying the process route and reducing the number of devices and equipment.
Inactive Publication Date: 2015-01-14
SHENZHEN FEIYANG IND CO LTD +2
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Problems solved by technology
This process has problems such as equipment corrosion, side reactions and difficult disposal of reaction waste liquid.
In addition, in the process of preparing tertiary alcohol esters by esterification of carboxylic acids and corresponding alcohols, because tert-butanol has a relatively large steric hindrance effect,...
Method used
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Embodiment 1
[0021] In the above, the acidic catalyst is a strongly acidic ion exchange resin catalyst.
Embodiment 2
[0023] In the above, the strongly acidic ion exchange resin catalyst is a macroporous sulfonic acid type cation exchange resin.
Embodiment 3
[0025] In the above, the macroporous sulfonic acid cation exchange resin is divinylbenzene cross-linked polystyrene polymer.
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Abstract
The invention provides a preparation method of tert-butyl (methyl)acrylate. (Methyl)acrylic acid and isobutylene are subjected to addition reaction under the action of an acidic catalyst to generate the tert-butyl (methyl)acrylate. The technique belongs to an ideal atomic economic reaction, simplifies the process route, and needs fewer appliances. Besides, no byproduct is generated in the whole preparation process, so the method is a low-carbon environment-friendly technique. The adopted acidic catalyst is non-toxic and harmless, so the production process is environment-friendly. Therefore, the olefine acid addition esterification method can be widely used and is suitable for substituting the alkyd esterification method.
Description
technical field [0001] The invention relates to the field of chemical industry for preparing esters by an alkenoic acid method, in particular to a method for preparing tert-butyl (meth)acrylate. Background technique [0002] Tert-butyl (meth)acrylate is a very important chemical basic raw material and intermediate, because of its unique and highly active polar molecules, unsaturated double bonds and carboxylate (-COOR) structure, it can be Many kinds of polymer formulas with good properties are derived, and plastic, cross-linked and other polymers are prepared through emulsion polymerization, solution polymerization, copolymerization and other processing methods. It can also be self-polymerized or copolymerized with other vinyl monomers, such as styrene, vinyl acetate, methyl methacrylate, acrylonitrile, acrylamide, vinyl chloride, etc. The polymer obtained by polymerizing the carbon-carbon double bond of (meth) tert-butyl acrylate is colorless and transparent, and has exce...
Claims
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IPC IPC(8): C07C69/54C07C67/04B01J31/10
CPCC07C67/04B01J31/10B01J2231/49
Inventor 肖增钧姜雄彭威蒋兵吴妃飞
Owner SHENZHEN FEIYANG IND CO LTD
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