Specifications

1.Orthophthalic
2.Good weather resistance
3.High toughness
4.With small amount of methyl methacrylate using mixed

DS-726 is an orthophthalic type unsaturated polyester resin with high viscosity, medium reactivity,
good imbibition to packing, high transparency, and high surface hardness, capable of mixing with
methyl methacrylate for use, and applicable to the manufacture of artificial marbles, table-surface
plate etc.

Technical Indexes of Liquid Resin
Item	Unit	Value	Standard
Appearance		Transparent Sticky Thick Liquid	Visual
Chroma (Pt-Co)		25-35
Acid Value	mgKOH/g	18-22	GB2895-82
Viscosity(25°c)	mPa.S	650-850	GB7193.1-87
Gel Time	min	5-8	GB7193.6-87
Non-Volatile		68-71	GB7193.3-87
Thermal Stabilityility( 80°c)	h	≥24	GB7193.5-87
Note: Gel Time is 25°c; in air bath, 0.4 ml cobalt isocaprylate solution and 0.4 ml MEKP solution were added into 50 g resin.

 

 

Performance Indexes of Resin Casting Substance
ItemItem	Unit	Value	Standard
Barcol hardness  ≥	Barcol	35	GB3854-1983
Tensile strength ≥	MPa	60	GB2568-1985
Tensile modulus ≥	MPa	3000	GB2568-1995
Elongation at break ≥	%	5.0	GB2568-1995
Flexural strength ≥	MPa	73	GB2570-1995
Flexural modulus ≥	MPa	3000	GB2570-1995
Impact strength ≥	KJ/m2	8.0	GB2571-1995
H.D.T ≥	°c	60	GB1634-1989
Note: Environmental Temperature for Experiment: 23±2°c; relative humidity: 50±5%

 

Packing and Storing
DS-726: Packed in metal pail of 220 KG net weight with shelf life of 6 months at 20°c at
ventilated places; avoiding direct sunlight and heat or fire.
Note: The data were tested according to GB standard. Influenced by many factors in the process of
fabrication, necessary researches by user are not exclusive. Legally, no warranties for some
performances of product are applicable to one specific use, and the rights to amend the materials
are reserved.