拜耳烤漆专用的自交联树脂Desmotherm 2170

Desmotherm   2170

Type                                         Aromatic, self-crosslinking, stoving urethane resin

Form supplied                                                                                     (R)
                                             approx. 70 % in n-butyl acetate / solvent naphtha   100 / isobutanol
                                             (13 : 12 : 5)

Uses                                         As a binder for one-component stoving polyurethane systems

Specification
    Property                                 Value                       Unit of measurement         Method

    Non-volatile content                     69 ± 2                      %                           DIN EN ISO 3251
    (5.0 g/60 min/125 °C,
    convection oven)

   Viscosity at 23 °C                        2000 ± 1200                 mPa·s                       DIN EN ISO 3219/A.3

    Color value (Iod)                        ≤ 7                                                     DIN EN 1557

Other data*
    Property                                 Value                       Unit of measurement         Method

    Flash point                              approx. 25                  °C                          DIN 53 213/1

    Density at 20 °C                         approx. 1.10                g/ml                        DIN EN ISO 2811

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

 Desmotherm   2170

Solubility / thinnability                                     (R)
                                                Desmotherm    2170  can  be  thinned  with  esters,  ketones  and  aromatic
                                                hydrocarbons  such  as  ethyl  acetate,  butyl  acetate,  methoxypropylacetate,
                                                acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, toluene,

                                                                           (R)
                                                xylene, solvent naphtha   100 and mixtures thereof. Generally speaking, it has
                                                good compatibility with the solvents listed.
                                                However, the solutions formed must be tested for their storage stability. Only
                                                PU grade solvents should be used (max. 0.05 % water, absence of reactive
                                                groups  such  as  hydroxyl  or  amino  groups).  The  product  has  only  limited
                                                thinnability with aliphatic hydrocarbons.

                                                              (R)
                                                Desmotherm     2170   should   not   be   thinned   to   below   a   solids   content
                                                of 40 %. Prolonged storage of a solution with a lower binder content may result
                                                in turbidity and sedimentation.

Compatibility                                                                         (R)
                                                Generally speaking, Desmotherm   2170 is compatible with various polyesters

                                                                         (R)               (R)
                                                from  the  Desmophen    and  Alkynol    ranges,  amino  resins  and  flexibilisers.
                                                However, the compatibility of the combinations used should always be tested.

Properties/Applications                                       (R)
                                                Desmotherm   2170 is used primarily as the binder in one-component stoving
                                                polyurethane systems for highly flexible primers, intermediate coats, primer
                                                surfacers  and  thin  coil-coating  primers.  Being  a  self-crosslinking  stoving
                                                urethane  resin,  the  product  contains  the  amount  of  polyol  required  for
                                                crosslinking  as  well  as  the  hardener.  The  film  properties  can  be  modified

                                                                                                                       (R)              (R)
                                                by combination with various polyesters from the Desmophen   and Alkynol
                                                ranges, amino resins and flexibilisers.

                                                                                                                               (R)
                                                The  main  field  of  application  for  systems  based  on  Desmotherm    2170
                                                is  as  primer  surfacers  in  automotive  OEM  finishing.  When  formulating

                                                                              (R)
                                                coatings with Desmotherm   2170, the temperature should not exceed 60 °C
                                                otherwise the crosslinking reaction will begin. The properties of films based 
 

具体信息请登录源禾网站http://yuanhechemical.com/index.php