solid polyester resin

Polyester resin P7030

 Properties:

P7030 is a carboxyl saturated polyester resin, which is used together with epoxy resin (by 70:30) to produce hybrid powder coatings, giving high gloss, good flow effect, wonderful mechanical properties, pretty decorative effects, excellent yellowing resistance and marked durability.

P-7030 is most suitable to manufacture low-gloss or semi-gloss powder coatings.

Specifications:

Appearance:                                         Light yellow & clear flake

      Acid value (mgKOH/g):                                25 - 35

      Softening point (°C):                                   96 - 120(Ring & Ball Method)

Glass Transition Temperature (°C):                    53 – 57

      Viscosity (175°C/mPa.s):                                     3000-6000

 Recommended formulation:

  Low/Semi-gloss type

Ingredients                               Weight

 Polyester resin P7030 (70:30)                      200g

         Epoxy resin (E-12)                                  360g

         Padding                                             385g

         Matting agent (XG603-1A or B68)                  30g

         Flow agent                                       10g

         Benzoin                                          5g

         Leveling agent (701B)                               10g

Technical condition for making coatings:

Extruder:                                          SLJ-30AF

Clamp set temperature:                            100 -120°C

Helix pole temperature:                              80°C

Rotational speed:                                  70rpm

Curing condition:                                   190°C/15 min or 200°C/10min. (metal temperature)

Coating film properties:

Film thickness:                                     60±10μm

Gloss (60°C):                                      ≥90% / ≤20%

Bend (mm):                                        ≤6

Impact intensity:                                    ≥50kg·cm

Pencil hardness:                                   ≥1H

  Package and Self life:

1. Packing: 25kgs per bag; 17.5MTS/1X20`FCL with pallet.
2. Storage: Should be stored in a ventilative,dry and clean place under 30°C and valid for one year.