This standard specifies the terms and definitions, product classification, requirements, test methods, inspection rules, and marking, packaging and storage of saturated polyester resins for thermosetting powder coatings.
This standard applies to thermosetting saturated polyester resins prepared by polycarboxylic acids (or anhydrides), polyols, etc. through condensation polymerization, and the product is used in the manufacture of epoxy polyester powder coatings, pure polyester powder coatings and polyurethane powder coatings.
2 Normative references
The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition of the normative document (including any amendments) applies.
GB/T 3186 Paints, varnishes and raw materials for paints and varnishes - Sampling
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T 6743-2008 Plastics(polyester resins) and paints and varnishes(binders) - Determination of partial acid value and total acid value
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 9282.1-2008 Clear liquids - Estimation of colour by the platinum-cobalt scale - Part 1: Visual method
GB/T 9750 Marks for package of coating products
GB/T 9751.1-2008 Paints and varnishes - Determination of viscosity using rotary viscometers - Part 1: Cone-and-plate viscometer operated at a high rate of shear
GB/T 12007.6-1989 Epoxide resins - Determination of softening point - Ring and ball method
GB/T 12008.3-2009 Plastics - Polyether polyols - Part 3: Determination of hydroxyl number
GB/T 13491 General rule for packing of coatings
GB/T 19466.2-2004 Plastics - Differential scanning calorimetry (DSC) - Part 2: Determination of glass transition temperature
HG/T 2006 Thermosetting powder coatings
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
saturated polyester resins for thermosetting powder coatings
thermosetting saturated polyester resins prepared by polycarboxylic acids (or anhydrides), polyols, etc. through condensation polymerization, with the number-average molecular weight of 2,000~8,000.
