>> MAH(Maleic Anhydride)

¢Â MALEIC ANHYDRIDE (MAH)

    Process : Alusuisse Process(LONZA)

    Basic Engineering : Lummus Crest Inc.

    Detail Design & Construction : Shinwha Eng. & Const. Co., Ltd.

    Production Capacity : 28,000 MTA

    Purity, wt% : Min.99.5 (Present 99.9)

 

¢Â APPLICATION

   MAH is a dicarboxylic unsaturated acid which readily reacts with glycols, hydrogen, water, hydrazine, amines, alcohols, olefin, diens, and petroleum resins.

   It¡¯s representative end-use is to make unsaturated polyester resins.

End-Use

Unsaturated polyester resin

   Unsaturated polyester resins are the largest outlets for maleic anhydride. They are produced by the reaction of dibasic acids (or anhydrides) such as phthalic anhydride, maleic anhydride or isophthalic acid with one or more glycols. In most applications, they are combined with various forms of glass fiber to produce so-called fiberglass-reinforced plastics (FRP).

Fumaric acid

   Fumaric acid is produced by the isomerization of maleic acid via maleic anhydride. In the past, fumaric acid was also produced using fermentation of molassed, but this is no longer in commercial use.

   The Primary applications for fumalic acid are a paper size resins : these sizing materials are applied to paper to improve or increase the paper¡¯s stiffness, strength, smoothness or weight.

Agricultural Chemical

   Several commercially import pesticides, herbicides and growth regulators require maleic anhydride as a key raw material in their preparation. Representative agricultural chemical are as follows; Malathon, Maleic Hydrazine, Captan, Endothall, Difolatan, and Alar.

1.4-Butanediol (1.4-BDO)

   Refer to application of 1.4-Butanediol

¢Â PRODUCT SPECIFICATION

MALEIC ANHYDRIDE (MAH)

    Molecular Weight 98.06

    Viscosity (CP) 1.5(70¡É)

    Specific Gravity 1,314(60¡É)

   Freezing Point(¡É) 52.5 min

   Boiling Point(¡É) 202

   Falsh Point(¡É) 110

Peroxide Content

   Colour(APHA) 20 max.

   Water(wt%) -

   Purity(wt%) 99.5 min.