β-Hydroxyalkylamides (HAA)

Hydroxyl Alkyl Amide (HAA)
Hydroxyl Alkyl Amide (HAA)

Pure polyester curing agent composited of β-hydroxyalkyl amides. It is the excellent curing agent of the pure polyester weather resistance powder coating, and it can also be used as curing agent for indoors carboxyl polyester, and the coating has a good performance. This product is a substitute for TGIC curing agent, with non-toxic, non-irritating to the skin, fast curing and other advantages. This product has excellent outdoor performance and it is the real environment-friendly products.

Brief Introduction

HAA is white powder. It is mainly used as a hardener (cross link) in outdoor polyester powder coatings, not toxic and better than TGIC.

tetra-functional βhydroxyalkylamide(AHA)

Carboxylic terminal polyester crosslinker used in TGIC-free based outdoor durable powder coating

Specification

Test Item Limit
Melting Range 120-130℃
Hydroxyl Value (mg KOH/g) 640-740
Volatile Matters ≤2.0%

Application Condition

The curing temperature is around 180-220℃. We suggest its extrusion temperature around 118-120℃.

Package and Storage

25kg,net,paper or plastic bags.

It should be stored in a cool dry warehouse, away from any alkali or acid.

HAA curing agent

Product description

    • HAA curing agent series is a poly-functional ß-hydroxyalkylamide cross linking agent. As a substitute of TGIC, it is suitable for curing with carboxyl-terminated polyester or acrylic resin to provide TGIC-free based exterior durable powder coatings, sterile a new type of powder coating with mutation has been widely used because of its environmental protection, safety and energy saving

Technical specification

Item A3120 A105 Test method
Appearance White powder White powder Eye-Test
Melting range(℃) 120~128 120~128 GB/T617
Hydroxyl equivalent weight 80-84 80-84
Solid content(%) ≥99.0 ≥98.0 GB/T1725
Application A320 features for higher purity, better anti-yellowing performance, pinhole shrinkage phenomenon. It is widely used for most outdoor powder coating product  A105 feature for its high-performance cost, good anti-yellowing performance, pinhole shrinkage. It is widely used for most ordinary outdoor powder coating product

Application

    • HAA has excellent mechanical properties and weatherability, and can be cross-linked with carboxyl-containing polyester resin or acrylic resin to prepare weatherable powder coatings. Compared with TGIC, it has no toxicity and can be used to prepare outdoor weather-resistant powder coatings without toxicity, skin irritation and safety.

Use method & levels

    • l  Recommend to design formula by weight parts of 95/5 [resin to ] for polyester resin with AV ca.34 mg KOH/g; 96.5/3.5 for polyester resin with AV ca.22 mg KOH/g.
      l  Premix HAA with other components of the formula before extrusion

Package & Storage

    • l  based on our experience the shelf life of this product under above conditions is at least 2 years.
      l  Store in cool dry place to avoid caking. Keep package closed after using. Keep away from heat and fire.
      l  Packaging with PE lined Kraft paper bags. Net weight 25 kg per bag.