CAS No.: 26123-45-5 
EINECS No.: 2285437 
Purity: 99.9% 
Type: Synthetic Resin and Plastics 

Specifications 
High purity, low price, high quality, Extensive use 

Unsaturated Polyester Resin 
1. Application 
1) General purpose laminating resin and Laminating resin for boats 
2) Resin transfer molding resin 
3) Heat resistance and chemical resistance resin 
4) Super corrosion resistance resin 
5) Filament winding resin and pultrusion molding resin 
6) Corrugated panel molding resin 
7) Clear casting resin and special casting resin 
8) Onyx marble resin and general marble resin 
9) Gel coat resin and color paste / pigment 
10) Others 

Polyester resin (Unsaturated Polyester Resin) is a kind of liquid resin that unsaturated polyester is dissolved by polymeric monomer having the groups of vinyl or allyl. Polyester resin turns into insoluble and infusible plastics by hardening through cross-linking reaction and rising temperature at the room temperature by adding peroxide catalyst and when it is heated or when it is mixed with peroxide catalyst and accelerator. 
Also, Polyester resin turns into FRP if the resin is spread and impregnated through reinforced material such as glassfiber by lamination before it is gelled. 
Unsaturated polyester resin holds an important position among thermosetting resins and its demand is expanding widely for decorative panels, bathtubs, septic tank, electric insulators, ships, corrugated panels, and automobile parts, etc.

Technical Indexes of Liquid Resin
Item	Unit	Value	Standard
Appearance		Transparent Sticky Thick Liquid	Visual
Acid Value	mgKOH/g	16-22	GB2895-82
Viscosity(25°C)	mPa.S	380-620	GB7193.1-87
Gel Time	min	5-9	GB7193.6-87
Non-Volatile	%	62-68	GB7193.3-87
Thermal Stabilityility	h	≥24	GB7193 .5-87
Note: Gel Time is 25°C; in air bath, 0.5 ml cobalt isocaprylate solution and 0.5 ml MEKP solution were added into 50 g resin.