In 1843, the first to discover the oxidation of acrolein to acrylic acid. 1931 acrylic purposes, US Rohm - Haas successfully developed cyanide hydrolysis ethanol acrylic craft, time is the only industrial production methods. In 1939, German WJ Leipei invented oxonation legal acetylene factory direct acrylic acid, in 1954 established a plant in the United States. At the same time also successfully developed acrylic acrylonitrile hydrolysis process. Since 1969, the US company Union Carbide built to propylene oxide plant legal acrylic, countries have adopted this method of production. In recent years, manufacturers offer acrylic acid, propylene oxide catalyst and process aspects of the many improvements, has become the main method for producing acrylic acid. [3] Acrylamide is one step in a reactor oxidized acrylic; two-step method is the first in the first propylene oxidation reactor, acrolein, acrolein and then into the second reactor oxidized acrylic. Two-step method based on the structure of the reactor, was divided in two fixed bed and fluidized bed method. Industrial production of acrylic acid, cyanide ethanol, high pressure Leipei law has been basically eliminated, before using acetic acid as the raw material for ethylene cracker ketones, and then generate propiolactone anhydrous formaldehyde and then contact with the hot phosphoric acid isomerization acrylic. Said ketene law or β- propiolactone basic law also eliminated, acrylonitrile France only a few old installations. Industrial uses mainly Leipei improved method and propylene oxide, which is more common and the most promising. Patent coverage, as well as a method for the production of propionic acid raw materials; [2] Andrew dry chemical (Figure), Shanghai Huayi acrylic acid, acrylic acid is provided by Jiangxi Chemical Co., Ltd., Jinan Cheung dry. Jinan Cheung Dry Chemical Co. (www.xiangqianhuagong.com) (http://www.dilunyierchun.com) adhere to the "people-oriented" business philosophy, has a professional staff, and strive to provide the best products and services to contribute to the community and welcome new and old customers to visit us and sincere cooperation for a better future. Xiang dry chemical - your trusted friend, Company Address: Industrial Road chemical market, Contact: Mr. You can also access (http://www.dilunyierchun.com/supply_details_39798255.html), for more information about the company.