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Glass Resins are a family of high-performance, thermosetting polysiloxane resins based on an alternating silicon-oxygen network. They are manufactured from specifically purified monomers by a patented process which yields polymers having exceptional properties. The Glass Resins cure by condensation and, once cured, are insoluble in all common organic solvents.


 

Tech specs

GR100F

GR150F

GR630L GR630S GR650F GR651L GR653L GR653LPP GR654L GR908F GR950F
Physical Form Flake Flake Liquid Liquid Flake Liquid Liquid Liquid Liquid Flake Flake
Color Colorless Colorless Colorless Colorless Colorless Colorless Colorless Colorless Colorless Colorless Colorless
Solids 100% 100% 60% 100% 100% 35% 30% 30% 40% 100% 100%
Solvent - - Xylene - - Ethanol-Butanol Methanol-Butanol Methanol-Butanol Methanol-Butanol - -
Solubility Polar & Aromatic Polar & Aromatic Aromatics - Polar Polar Polar Polar Polar Polar & Aromatic Polar & Aromatic
Viscosity (as supplied or 40% in Butanol) cps 20 17 24 550 28 11 11 11 12 15 14
Specific Gravity 1.3 1.3 1.05 1.16 1.3 1.3 1.3 1.3 1.3 1.3 1.3
Refractive Index 1.49 1.51 1.48 1.47 1.42 1.42 1.42 1.42 1.42 1.56 1.56
Organics Methyl-Phenyl Methyl-Phenyl Methyl-Phenyl Methyl-Phenyl Methyl Methyl Methyl Methyl Methyl Methyl-Phenyl Phenyl
 

NOTES: The Glass Resin Flakes are readily soluble in a variety of polar solvents such as: alcohols (isopropanol, N-propanol, butanol and diacetone alcohol), ketones and the glycol ethers and their acetates.

Abrasion Resistant Coatings for Plastics

Plastic coatings
GR-653L Hardcoat GR-653LP-P Hardcoat Primerless for Polycarbonate
Glass Resins are a family of methylpolysiloxane polymers, which have a long history of being used in semipermanent mold releases.
The Glass Resins that are most commonly used in semipermanent mold releases are: 

Mold releases
GR-650 Flake :a hard resin flake that is readily soluble in a variety of organic solvents.
GR-651 Liquid :a 35% solids solution of resin in ethanol-butanol that also contains a catalyst of Tetramethylammoniumhydroxide blocked with Formic acid
GR-655 Liquid :a 25% solids solution of resin in ethanol

These three materials are manufactured to produce a variety of molecular weight for the customer. The GR-650 Flake has the highest M.W., followed by the GR-655 Liquid and then the GR-651 Liquid. Glass Resins cure by condensation, so degree of cure depends on time and temperature.

Formulation
The GR-650 Flake is the most versatile product as it is a solid resin and can be cut in a variety of polar solvents, depending on the flash point desired. Solvents range from ethanol to DPMA. After the flake is dissolved in polar solvent it can be reduced with some non-polar solvent such as an Isopar. The tolerance for a non-polar reduction is worked out on a case by case basis based on the solvents and resin solids used.

The semipermanent mold releases based on Glass Resins are generally sold at 1 to 3% resin solids and may incorporate a small percentage of a high viscosity silicone oil for "fast break".

The GR-650 Flake can be made available in solution in a variety of solvents.
All Glass Resins are available with a Certificate of Analysis showing test results versus those specified by the customer.
The GR-650 Flake is sold in 25 pound bags. The GR-651 Liquid are sold in 5 gallon pails and 55 gallon drums.


 

   

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