Recommended Products：YINYANG RESIN YE-7780C Saturated Polyester Resin

1. INTRODUCTION

YE-7780C is an exterior saturated carboxylic polyester resin curing with TGIC at 93/7 for thermosetting powder coating. Except with good durability and flow, it has excellent heat resistance performance up to 270 ℃ , suitable for profiles powder coating which demand high heat resistance.

2. CHARACTERISTICS OF THE RESIN

Appearance………………………… light yellow flakes

Acid Value (mg KOH/g)……………30-35 (1)

Color……………………………… <2 (2)

Viscosity at 175℃ (mPa…S)……27000-38000 (3)

Glass Transition Temperature (Tg)… Approx 68ºC(4)

Softening Point (℃)………………115-125 (5)

(1)GB/T 6743-2008 (2) GB/T 1722-92 (3) GB/T 9751.1-2008 (4) GB/T 19466.2-2004 (5) GB/T 12007.6-1989

3. TYPICAL POWDER FORMULA:

Barium Sulfate……………………………….. 100 (1)

Titanium Dioxide……………………………… 300 (2)

Polyester YE-7780C……………………………558

TGIC……………………………………………42 (3)

Flow Control Agent………………………………6 (4)

Benzoin………………………………… 3

(1) Shanxi Fuhua Chemical Co., Ltd (2) Dupont R-902 (3) ARALDITE PT-810, WPE: 107 (Supplier: Ciba-Geigy) Other TGIC suppliers are also suitable. YE-7780C / TGIC = 93/7 (4)YL-1080 (Silica Absorption 65% supplied by YinYang Resin Co., Ltd)

4. MANUFACTURING PROCEDURE AND TESTING

（1） MANUFACTURING

a. Pre-mixing (dry-blend of the component above)

b. Homogeneous extrude at temperature of 125-128C)

c. Cool down and initial grinding

d. Milling and sieve to obtain a fine free-flowing powder maximum particle size of80 um

（2）COATING CONDITION:

Voltage………………………… 60-80 kv

Air Pressure………………………………1-2kg/cm2

Test Panel……………………………0.35mm steel panel

（3） CURING CONDITION:

10 minute at 200C (object temperature)

（4） TEST RESULT:

Film Thickness…………………………………60-80m

Gloss………………………………….>90% (1)

Erichsen Slow Penetration ………… 6mm (2)

Direct / Reverse Impact…..……………50kg-cm (3)

Conical Mandrel…………………………Pass (4)

Crosshatch adhesion……………………GT=0 (5)

(1)GB/T 9754-1988 (2)GB/T 9753-1988

(3)GB/T 1732-1993 (4)GB/T 6742-1986

(5)GB/T 9286-1998

5. PACKING AND STORAGE

25 kilogram paper bag or PE bag; stored in a cool dry indoor place at temperature of-20℃ to 35℃. Avoid long-term exposure to direct sunlight. The shelf life of the resin isone year in the above-mentioned storage conditions. Experience has shown that storagelife of the resin is up to 3 years. It is proposed that the testing product beyond the shelf lifecan still be used after tested qualified.

Note: The above-mentioned indications are based on carefully made tests. Noliability can be assumed in the event of any inaccuracy or incompleteness being found inthe value listed above and consequently we recommend evaluation in your ownlaboratories prior to use.

Guang Dong Yin Yang Environment -Friendly New Materials Co .,Ltd . is a national high-tech enterprise integrating R&D, manufacturing and marketing, an environment-friendly high-tech enterprise for water-based emulsion polymers and polyester resin for powder coatings.