Brief history of epoxy resin development

2022-06-23
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A brief history of the development of epoxy resin. As early as 1891, lindmann in Germany used hydroquinone

to react with epichlorohydrin, condensed it into a resin and cured it with anhydride. However, its use value has not been revealed

1930, Pierre castan of Switzerland and e of the United States should have the same size enlee for further research. The above resins were cured with organic multi-component

amines, showing very high bonding strength, which attracted people's attention

The epoxidation of olefins was first reported in the early 20th century, but until the mid-1940s, when Swern and his partners in the U.S.

Ministry of Agriculture began to study the epoxidation of polyunsaturated natural oil, this technology was only applied to the production of high-phase molecular weight monoepoxides and attracted extensive interest in industrial scale development. It will not be used in the epoxy resin synthesis technology until 10 years later. The reaction products of bisphenol A and epichlorohydrin have been reported in the mid-1920s. 15 years later, the production technology of unstable epoxidized aliphatic amine intermediates was pioneered. In 1933, schlack of Germany studied the separation technology of modern bisphenol A epoxy resin and bisphenol A. In 1936, castan produced amber epichlorohydrin bisphenol a resin and reacted with phthalic anhydride to produce thermosetting products of industrial significance for casting and molding products. At the beginning of 1939, Greenlee also independently produced high molecular weight bisphenol A-ring

oxychloropropane resin and used it for advanced thermosetting coatings

the first manufacturing of epoxy resin with industrial value was completed by Devoe Raynolds company of the United States in 1947 [6], which opened up the technical history of epichlorohydrin bisphenol a resin. Epoxy resin began its industrialization and is considered to be a technical progress superior to the old phenolic resin and polyester resin. The performance of this resin is almost comparable to that of most other thermosetting plastics. In some special application fields, its performance is better than that of phenolic resin and polybutyric acid. Ciba company in Switzerland, shell company and Dow company in the United States have started the industrial production and application development of epoxy resin. In the late 1950s, Ciba and Devoe -

raynolds, the two major companies in the United States, continued to study glycidyl ether epoxy resin. Shell chemical company only provided epichlorohydrin. United carbon

chemical plastics company first manufactured phenolic resin and bisphenol A. Ciba and shell developed epoxy resin intensively

in the summer of 1955, four basic epoxy resins obtained manufacturing licenses in the United States. Dow chemi cal

co. and reichho1d compound company established an epoxy resin production line. While the production and application of common bisphenol A epoxy resin

, some new epoxy resins have come out one after another. For example, in 1956, the United carbide company of the United States began to sell alicyclic

epoxy resin, and in 1959 Dow Chemical Company produced phenolic epoxy resin. About 1960, Koppers, co.

produced o-cresol epoxy resin. In early 1965, Ciba began to produce and distribute this resin. During the period from 1955 to 1965, the quality of epoxy resin was significantly improved, and bisphenol A epoxy resin had all the brands of average relative molecular weight grade. Phenolic epoxy has established outstanding performance for high temperature applications. Shell chemicals and lianc plastics produce special temperature resistant resins such as

multi-functional phenol glycidyl ether, and the manufacturer also provides aliphatic polyol epichlorohydrin

resin. Unio carbide developed p-aminophenol triglycidyl ether resin. In 1957, the patent on the synthesis process of epoxy resin came out, which was applied by shell developmet Co. [7]. The patent studied the application process of curing agent and

filler, and revealed the application of cured epoxy resin

The epoxy resin synthesized by peracetic acid method was first introduced by United carbide company in 1956, and was resold to United carbon plastics in 1964. In Europe, industrialized alicyclic epoxy resin came out in the early 1960s. In 1963, it was introduced to the United States through Ciba. In 1965, Ciba introduced many varieties of multi-functional epoxy of carbon linked plastics. In about 1960, FMC Corp. began to distribute epoxidized polybutadiene. In the mid-1970s, the United States, Canada, Britain, Switzerland, western Germany, Belgium, Argentina, Mexico, Poland, Czechoslovakia and the Soviet Union began to manufacture bisphenol A epoxy resin and some new epoxy resins. In the 1970s, electronic grade applications with low chlorine content were started, and aging resistant resins such as five membered ring hydantoin

oxygen and hydrogenated bisphenol A epoxy and flame retardant epoxy resin such as tetrabromobisphenol A epoxy and brominated epoxy compounds were developed successively. In the 1980s, a new multi-functional epoxy resin with compound amine and phenolic structure was developed to meet the needs of composite material industry. Recently, water-borne epoxy resin and fused ring temperature and humidity resistant epoxy resin have been developed. Due to the increase of

kinds of epoxy resin products and the development of application technology, the application of epoxy resin in the fields of electrical insulation, anti-corrosion coating, metal structure bonding and so on has made a breakthrough: therefore, epoxy resin as an industry has flourished and used a layer of fusion agent on the required shape; At present, the development of its varieties and applications is still very active. Since 1960, hundreds of epoxy resins have been industrialized, and 40 ~ 50 kinds of epoxy resins with different structures can be commercialized or provided by intermediate test plants. At the same time, more than 100 kinds of industrial curing agents and a large number of modifiers and diluents that are applicable to them are supporting them, which is just in the ascendant

the development of epoxy resin in China began in 1956 and was first successful in Shenyang and Shanghai. In 1958, Shanghai and Wuxi started industrial production. In the mid-1960s, research began on some new ALICYCLIC EPOXIDES: phenol

aldehyde epoxy resin, polybutadiene epoxy resin, glycidyl ester epoxy resin, glycidylamine epoxy resin, etc. by the end of the 1970s, China had formed a complete industrial

epoxy resin from monomer, resin, auxiliary materials, from scientific research, production to application, which has excellent physical and mechanical properties, electrical insulation properties The drug resistance and adhesive properties can be used directly or indirectly as coatings, casting materials, molding materials, adhesives and laminates to penetrate all aspects of the national economy from daily necessities to high-tech fields. For example, epoxy resin is widely used in composite materials in aircraft and spacecraft, packaging materials for large-scale integrated circuits, insulation materials for generators, coatings for steel and wood, adhesives for mechanical and civil construction, as well as the inner wall coating of food cans and metal anti-corrosion electrophoretic coating. It has become an indispensable material in the development of national economy. Its output and application level can also reflect a country's industrial technology development from one side

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