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水性Bayhytherm 3146

水性Bayhytherm 3146

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  • Bayhytherm® 3146

    Characterization       Water-reducible, aliphatic, self-crosslinking stoving

                             urethane resin.Binder for waterborne, one-component

                             stoving polyurethane systems
    Form supplied          approx. 46 % waterborne dispersion


    Specification
    Property               Value           Unit of measurement       Method
    Acid value             8.0 ± 1           mg KOH/g            DIN EN ISO 2114
    Viscosity
    at 23 °C, (D = approx. 186 s-1)
                           700 ± 500         mPa·s              DIN EN ISO 3219/A.3
    Non-volatile content
    (1 g / 1 h / 105 °C)
                           46 ± 1              %                 DIN EN ISO 3251
    pH
    (thinned 1 : 4 with deionized water)
                           7.85 ± 0.65                           DIN ISO 976


    Other data*
    Property               Value           Unit of measurement       Method
    Density                approx. 1.10       g/ml                DIN EN ISO 2811
    Visual appearance      yellowish-white, cloudy
    Dimethylethanolamine   approx. 1           %


    *These values provide general information and are not part of the product specification.



  • Bayhytherm® 3146

    Solvent              Water                      approx.          49%
                          Solventnaphtha® 100        approx.           2%
                          N-methyl pyrrolidone       approx.           1%
                          1-methoxypropylacetate-2   approx.           1%


    Solubility / thinnability  

                          Bayhytherm® 3146 can be diluted with water, esters,

                          ketones, alcohols, glycols and glycol ethers.
                          However, the solutions formed must be tested for their

                          storage stability.


    Compatibility       Bayhytherm® 3146 is compatible with Bayhydrol® E 270, U

                          241, UH 2621 and Bayhytherm® VP LS 2153; with blocked

                          polyurethane dispersions such as Bayhydur® BL 5140, VP LS

                          2310 and Bayhydur® BL XP 2706 and also with amino resins

                          such as Cymel® 303, 328, 3701) and Maprenal® MF 9042).
                          However, the compatibility of the combinations used should

                          always be tested.
                          1) Cytec Deutschland GmbH, Neuss
                          2) INDEOS Melamines GmbH, Frankfurt/Main

    Properties / Applications

                          Bayhytherm® 3146 is used for the formulation of waterborne,

                          one-component baking systems such as waterborne fillers or

                          general purpose industrial coatings. Coating films based

                          on Bayhytherm® 3146 exhibit extraordinary impact strength,

                          adhesion and overcoatability. Bayhytherm® 3146 can also be

                          used as an additive to conventional waterborne stoving

                          systems to improve flexibility, impact strength and

                          adhesion.
                          The product is characterized by greater reactivity and

                          better pigment wetting and thermal stability than the

                          self-curing Bayhytherm® VP LS 2153. Because it is easier

                          to dilute, it also offers advantages with respect to the

                          solids content and filling power of the coating systems at

                          spray viscosity.
                          Typical curing parameters are 30 min at 130 °C. The

                          product exhibits overbaking stability up to 120 min at 190

                          °C. Slight thermal yellowing may occur depending on the

                          baking temperature and time.


    Storage               -Storage in original sealed Bayer MaterialScience container.


                          -Recommended storage temperature: 5 - 23 °C.


                          -Protect from frost, heat and foreign material.


                          General information: The product is sensitive to frost.

                          Freezing will damage the product irreversibly. Prolonged

                          storage at higher temperatures may result in a decrease

                          of viscosity and/or an increase of average particle size,

                          possibly resulting in sedimentation or coagulation.

    Storage time         Bayer MaterialScience represents that, for a period of

                          three months following the day of shipment as stated in

                          the respective transport documents, the product will meet

                          the specifications or values set forth in section

                          "specifications or characteristic data" above, what ever

                          is applicable, provided that the product is stored in

                          full compliance with the storage conditions set forth in

                          and referenced under section "storage" above and is

                          otherwise handled appropriately.
                          The lapse of the three months period does not necessarily

                          mean that the product no longer meets specifications or

                          the set values. However, prior to using said product,

                          Bayer MaterialScience recommends to test such a product

                          if it still meets the specifications or the set values.

                          Bayer MaterialScience does not make any representation

                          regarding the product after the lapse of the three
                          months period and Bayer MaterialScience shall not be

                          responsible or liable in any way for the product failing

                          to meet specifications or the set values after the lapse

                          of the three months period.

    Labeling and REACH applications

                          This product data sheet is only valid in conjunction with

                          the latest edition of the corresponding Safety Data Sheet.

                          Any updating of safety-relevant information- in accordance

                          with statutory requirements – will only be reflected in

                          the Safety.
                          Data Sheet, copies of which will be revised and

                          distributed. Information relating to the current

                          classification and labeling, applications and processing

                          methods and further data relevant to safety can be found

                          in the currently valid Safety.
                          Data Sheet.