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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
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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 |
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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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