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Curing Agent of Powder Coating

Matt Hardener MB55

  • Product description: Matt Hardener / curing agent MB55
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Description:


Curing Agent MB68/Matt Hardener MB68 is the salts of polycarboxylic acid withCyclicamidine. The hardener, applied in suitable formulations can produce epoxy or Hybrid coatings for matt or semi-matt gloss with very good flow and properties. Variation between matt and semi-matt surface can be obtained by means of suitable adjustment of formulation.

Information:

Chemical name

Pyromellitic acid di (2-phenyl-2-imidazoline) (1:1) salt

Alternative chemical Name

4,5-Dihydro-2-phenyl-1H-imidazole -1,2,4,5-benzenetetracarboxylate

Product Code

Curing Agent MB68/Matt Hardener MB68

Chemical structure

Molecular formula

C10H6O8.C9H10N2

CAS No.

54553-90-1

EINECS No.

259-224-4

Molecular Weight

400.34 [g/mol]

Technical data:

Curing Agent/Matt Hardener MB68

Appearance

White powder

Melting range

224~230

Purity

99%

Application:


The hardener may be applied both in pure epoxy and hybrid (epoxy-polyester) resin powder coatings. Epoxy coatings of gloss range level ranging from 5%~10% and hybrid coatings with gloss levels ranging from 10%~70% ( or greater ) may easily be formulated by the use of MB68.Coatings produced with MB68 is characterized by color and gloss stability under normal baking conditions. Hybrid coating with matt or semi-matt gloss may be achieved by replacing some of the polyester in the formulation with an equivalent quantity of MB68.


The following gives the formulations of MB68 for matt epoxy coatings.


Gloss

Formulation

2.0-3.5

15-25

Epoxy(604)

300g

250g

Polyester

---

50g

701

5g

5g

MB68

30g

20g

BaSo4

175g

165g

WD88

5g

5g

Benzoin

2g

2.5g

Carbon Black

4g

3g


*The gloss level of powder coating can be adjusted by the usage of MB68 and TiO2

* Epoxy (604) is same as Epoxy E-12

* Polyester: Acid value 25-35KOHg/mg

* WD88 is a leveling agent with silica carrier available from Huangshan Wellde Industry Co.,Ltd. It’s noted that the achievement of matt effect and relevant properties of the film is connected with full cured of coatings.


Claim: Above information is offered as a recommendation only. The suitability of MB68 should be determined by evaluation in your finished application.

Object Temperature

Time

180

20-25min

190

12-15min

200

10-12min

Storage and Packaging

The product is delivered in flat PE-bags, net weight 20kg or 25kg. If kept cool (0-40℃) and dry in closed bags the product can be stored for at least 1 year in accordance to the specification. All opened bags should be carefully resealed immediately after use.


This information and all further technical advice is based on our present knowledge and experience. However, it implies no liability or other legal responsibility on our part, including with regard to existing third-part intellectual property rights, especially patent rights. In particular, no warranty, whether express or implied, or guarantee of product properties in the legal sense is intended or implied. We reserve the right to make any changes according to technological progress or further developments. The customer is not released from the obligation to conduct careful inspection and testing of incoming goods. Performance of the product described herein should be verified by testing, which should be carried our only by qualified experts in the sole responsibility of a customer. Reference to trade names used by other companies is neither a recommendation, nor does it imply that similar products could not be used.

Contact Us

Contact: Sand Zhou

Phone: 86-13335692211

Tel: 86-559-6510095

Add: 15# WeiYi Road,Circle Economy Park, Shexian, Huangshan, Anhui,China