good quality bisphenol s 95%

Bisphenol S epoxy is a new type of epoxy, which has better flexural, compressive strength and thermal stability than traditional bisphenol a epoxy due to the introduction of-SO2-polar group. The glass transition temperature was 40 °c higher than that of epoxy under the same curing conditions. With the rapid expansion of polymer materials, more and more research has been done on epoxy. Rainere, Udog, HeinrichHW and so on synthesized bisphenol s epoxy by two-step method. SYKORAV, Spacek V. J. The low epoxy value of Bisphenol s synthesized by APPL and epoxy affects the application of bisphenol s bonding properties. In view of the above phenomena, the following two methods are available: (1) the BISPHENOL s epoxy is directly synthesized by one-step precipitation method using base as catalyst, and the chemical stability and thermal stability of the epoxy obtained by this method are good, (2) the Phase-transfer catalyst one step synthesis of bisphenol s epoxy has the advantages of simple process, high purity, less impurities and high epoxy value, however, the melting point of tetramethylammonium bromide used in this method is more than 300 °C, so the reaction temperature is very high and the reaction time is prolonged, which affects the working efficiency. Therefore, a method of synthesizing bisphenol s epoxy with high yield, high epoxy value, short reaction time and high working efficiency has been developed.

What are they?
Bisphenols is a chemical that have many uses, including making plastics stronger or more flexible.

BPS，Polymer Materials of Bisphenol S,Raw Material Solid Polycarbonate,Raw material Of Thermal Sensitive Material,Raw Material Of Epoxy Resin,Surfactant For Daily Use,Organic Intermediate Bisphenol S.

Where are they found?
Bisphenols are present in some polycarbonate plastic products (including water bottles, food storage containers and packaging, sports equipment, and compact discs), Epoxy Resin liners of aluminum cans, and cash register receipts.