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Polyester resins are synthetic resins formed by the reaction of dibasic organic acids and polyhydric alcohols. Maleic anhydride is a commonly used raw material with diacid functionality in unsaturated polyester resins. [1] Unsaturated polyester resins are used in sheet moulding compound, bulk moulding compound and the toner of laser printers.
In the liquid state, unsaturated polyester resins may be processed by numerous methods, including Hand Layup, vacuum bag molding, and spray-up and compression molded Sheet Molding Compound (SMC). They can also be B-staged after application to chopped reinforcement and continuous reinforcement, to form pre-pregs.
The plant is capable of producing up to 60.000 tons of resins per year. In October 2011, Bayer MaterialScience AG announced the sale of Viverso to Nuplex Industries. The purchase price is 75 million euros; all 165 employees will be taken over by Nuplex. [2] In mid 2016, Viverso, now under the name of Nuplex, merged with Allnex. [3]
Solutions of 30 to 40% MEKP are used in industry and by hobbyists as catalyst to initiate the crosslinking of unsaturated polyester resins used in fiberglass, and casting. For this application, MEKP often is dissolved in a phlegmatizer such as dimethyl phthalate , cyclohexane peroxide , [ clarification needed ] or diallyl phthalate [ de ] to ...
BMC is manufactured by mixing strands (Greater than 1/8” and less than 2" [2] [3]) of chopped glass fibers, styrene, an initiator, and filler in a mixer with an unsaturated thermoset resin (commonly polyester resin, vinyl ester resin or epoxy resin). The mixing is done at room temperature and stored at low temperatures to slow down curing ...
Combining Polipol polyester resins and Polives vinyl ester resin as well as gelcoat products, composite performance materials provide products for the construction, transport, marine, defense, wind energy, sports equipment, chemical containment industries. The main manufacturing plant is located in Southeastern Europe, Cerkezkoy-Turkey.
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