Posted 06 Jan 2011 00:00
The invention of epoxy resin has undergone a long period of time. As early as 1891, the German Lindmann hydroquinone and epichlorohydrin with the reaction of condensation into the resin and make use of anhydride curing. But its value has not been revealed. In 1930, Pierre Castan of Switzerland and the United States SOGreenlee further study, with organic polyamines to cure the resin, showing a very high bond strength, this attracted attention. Generally, the epoxy resin can contain alkenyl synthesis of the parent compound, can also contain active hydrogen atoms from the parent compound synthesis. Early 20th century, first reported the epoxidation of olefins, it was not until the mid 20th century, 40, Swern and his partners in the United States Department of Agriculture began to study polyunsaturated epoxidation of natural oil when the technology is only applied to high relative molecular weight single production of epoxy compound and caused extensive interest in the development of an industrial scale. 10 years before being used in epoxy resin synthesis. Around the mid-20th century, 20 have reported that bisphenol A and epichlorohydrin reaction products, after the first 15 years of instability in the epoxidation of fatty amine intermediate production technology. 1933 Germany Schlack  of bisphenol A epoxy resin with the modern separation of bisphenol A technology. Despite the reported year after Schlack epoxy compound with dual organic acids, inorganic acids, amines and thiols in response, but to determine bisphenol A epoxy resin or the industrial value of the company De Trey Freres, Switzerland and the United States Devoe & Rayno1ds Castan's Greenlee. 1936, Castan produced a bisphenol A epichlorohydrin resin, amber, and with the reaction of phthalic anhydride to produce products used for casting and molding of thermosetting products with industrial significance. Greenlee is also alone in early 1939 produced a high molecular weight epichlorohydrin bisphenol A resin and used for advanced thermoset coatings. 1937 to 1939, Europe has tried to use epoxy resin fillings, but without success. In addition, before World War II, not fully developed epoxy resin technology. Soon after the war started trial production Devoe & Rayno1ds coating resins, and companies are De Trey Freres CIBA permission to begin further development of the liquid coating, laminating materials and adhesives to use liquid epoxy resin. 1943 Castan's basic patents. However, the first epoxy resin manufacturing industrial value in 1947 by the United States, Devoe-Raynolds Company completed, and it opened up a bisphenol A epichlorohydrin resin technology history of industrialization and development of epoxy resin started, and is considered to be superior to the old phenolic resin and polyester resin, a technical progress. This resin is almost thermosetting plastics with the performance of most other comparable, in some special applications better performance than the phenolic and poly casein. Soon Switzerland CIBA (Ciba), the United States of Shell (Shell spleen) and Dow (Road) the commencement of the industrial production of epoxy resin and application development work. The late 20th century, 50, the two major U.S. companies, Ciba and Devoe-Raynolds continue to study the ether type epoxy resin, Shell Chemical Company only epichlorohydrin, Union Carbide Plastics manufacturing phenolic resin and double first phenol A, Ciba and Shell in Europe focus on the development of the epoxy resin.
Summer 1955, four basic epoxy resin manufacturing license in the United States, Dow Chemical co. And Reichho1d epoxy compounds the company established a production line. Bisphenol A epoxy resin production in the general application of the same time, some new type of epoxy resin have been published. Such as Union Carbide in 1956, the company began selling alicyclic epoxy resin, Dow Chemical Company in 1959, production of phenolic resin. Around 1960, Koppers, co. O-cresol formaldehyde epoxy production, in early 1965, Ciba to begin production and distribution of this type of resin. In the period from 1955 to 1965, significantly improved the quality of epoxy resin, bisphenol A epoxy resin has an average molecular weight of all grade levels. Epoxy establish a clear priority-level performance of high-temperature applications. Shell Chemical Company and Union Carbide officials and more plastics and other special groups to phenol ether resin temperature, the manufacturer also provides a aliphatic polyols epichlorohydrin resin. Unio Carbide developed aminophenol triglycidyl ether resin. For 1957, the patent technology of epoxy resin available, by the Shell Developmet co. Application, the patent of curing agent and fill method of additives in the application process, reveals the application of cured epoxy resin.
Peracetic acid was first synthesized epoxy resin Union Carbide in 1956, launched by the United States in 1964 sold to Union Carbide Plastics. In Europe, the industrialization alicyclic epoxy resin in the early 20th century came 60, 1963, Ciba introduced by the United States, introduced in 1965, Union Carbide Plastics Ciba many varieties of multi-epoxy functional group, about 1960 FMC CORP. Epoxidized polybutadiene starting distribution. The mid-70s, the United States, Canada, UK, Switzerland, West Germany, Belgium, Argentina, Mexico, Poland, Czechoslovakia and the Soviet Union began to manufacture bisphenol A epoxy resin and some new. 70's low level of chlorine content in electronic applications, have five dollars by the sea due to the epoxy, hydrogenated bisphenol A epoxy resins such as anti-aging and tetrabromobisphenol A epoxy, epoxy compounds, brominated flame ring epoxy resin to develop. 80 developed serotonin, phenolic structure of the new multi-functional epoxy resin composite materials to meet industry needs. Recently developed a water-based epoxy resin and epoxy resin moisture condensed ring temperature. Epoxy resin to increase the variety of technology development and application of epoxy in electrical insulation, anti-corrosion coatings, adhesives and other areas of the metal structure of the application of a breakthrough: So epoxy resin as an industry developed vigorously; present its varieties, application development is still very active, since 1960, has completed hundreds of industrial development of epoxy resin, 40 ~ 50 different structures of epoxy can be commercialized by the middle of a pilot plant to manufacture or provide, while corresponding 100 kinds of industrial application of curing agents and modifiers, and many of the accompanying diluent, is that the ascendant.
Development of epoxy resin in China began in 1956 in Shenyang and Shanghai the first success. 1958, Shanghai, Wuxi start industrial production. The mid-20th century, began to study some 60 new cycloaliphatic epoxy: phenolic resin, polybutadiene resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin, etc., to the late 70s China has formed from the monomer, resin, auxiliary materials, from research, production and application of a complete industrial system.
Epoxy resin has excellent mechanical properties, electrical insulation, resistance properties and bonding properties of drugs can be used as coatings, casting materials, molding materials, adhesives, laminated materials in the form of direct or indirect use to infiltrate from the daily necessities to high-tech sectors in all aspects of the national economy. For example: aircraft, spacecraft composite materials, large scale integrated circuit packaging materials, generators, insulation, steel and wood coatings, adhesives used in civil construction machinery, and even food cans and metal corrosion coating wall coating electrophoresis installed so widely used epoxy resin. It has become indispensable to economic development in the material. The level of its production and application can also be a reflection of a country's level of development of industrial technology.