WSD CHEMICAL LIMITED

WSD chemical established in 2000,we are professional engaged in the research, development, production, sale and service of PVC additives. We are located in Shengzhou City,Zhejiang,China, near to Shanghai, Hangzhou ,Ningbo, YIwu .and have convenient transportation access.

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UV absorber UV-328

  • 1.UV-328 is a high efficient UV absorber, which can effectively absorb 270-340 nm UV light.

    2.The light stability is similar to UV-326 and UV-327, but this product has good dissolubility with the resins.

    3.This product is suitable for polyolefin (especially PE), polyester, styrene polymers, polyamide, PMMA, PC, elastomers, etc.


  • Chemical Name

    2-(2'-Hydroxy-3', 5'-di-tert-amylphenyl) benzotriazole

    Formula

    C22H29N3O

    Structure

    CAS NO.

     25973-55-1

    Molecular Weight

    351.5

    Specifications

    Appreance

    Yellowish powder or cylindrical granule

    Purity

    ≥99%(HPLC)

    Melting Point

    79-87 oC

    Ash

    ≤0.1%

    Loss On Drying

    ≤0.5%

    Transmittance

      460 nm≥96%   500 nm≥97%

    Advantage and

    Application

    1. This product is a high efficient UV absorber, which can effectively absorb 270-340 nm UV light.
    2. The light stability is similar to UV-326 and UV-327, but this product has good dissolubility with the resins. Its heat volatility is low and its durability to washing is very good.
    3. This product is suitable for polyolefin (especially PE), polyester, styrene polymers, polyamide, PMMA, PC, elastomers, etc.

    Recommended

     dosage

    PS

    PE

    Polyester

    PVC

    PC

    0.2-0.5%

    0.2-0.4 %

    0.3-0.5%

    0.2-0.5 %

    0.15-0.3%

    Package

    20KG cartons or drum