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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.
HOBAS is a manufacturer of centrifugally cast glassfiber reinforced (GRP) pipe systems made of unsaturated polyester resin with diameters ranging from 150 mm to 3600 mm. The company was founded in Basel , Switzerland in 1957.
Viverso is the successor of the resin factory of the Bayer Bitterfeld GmbH. Production started here in 1994. Besides the 3 Viverso product lines, the Bayer MaterialScience brands Bayhydrol and Desmodur are produced here. The facility is equipped with a pilot plant and a laboratory as well as raw material and final product storages.
Specialty chemicals producer Stepan will acquire an expandable 21,000-ton plant when it takes over the North American polyester resins business from Bayer MaterialScience. The global powder ...
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.
Performance Material Products Division: general polymers (alkyd resins, unsaturated polyester resins, plasticizers, waterborne resins, acrylic resins, phenolic resins) specialty polymers (epoxy resins, ultraviolet (UV)-curable resins, polyurethane resins, fluorochemicals), metal carboxylates, sulphur chemicals, fiber and textile colorants
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