Request a Quote
Price is dependant on quantity, please request a quote for more information. If you are interested in samples, please refer to our sample price policy.
Description
GP-905 is a 100% active polypropylene oxide (PO) modified dimethylpolysiloxane block copolymer which is designed to improve the quality and performance of solvent-based, baked-on industrial finishes. The combination of polysiloxane and polypropylene oxide segments provides excellent lubricity and low surface tension which improves wetting, leveling and flow of solvent-based coatings. GP-905 contains Si-O-C bonds between silicone and polyol blocks and may be affected by hydrolysis in some aqueous systems. Some of the special properties of GP-905 are listed below:
- Low Surface Tension
- Excellent Lubricity
- Thermal Stability
| Typical Properties | |
|---|---|
| Appearance |
Clear to Hazy, Colorless to Light Amber Liquid
|
| Weight/Gallon @ 25°C |
8.0 lbs
|
| Viscosity (cPs) @ 25°C |
465 cP
|
| Flash Point (P.M.C.C.) |
>300°F
|
| Specific Gravity |
1
|
| Wt. % Active |
100%
|
| Wt. % Silicone |
35%
|
| Molecular Weight (Calculated) |
5200 amu
|
| Polyol Type |
Polyoxypropylene (PO)
|
| End-Cap |
Butoxy
|
| Solubility |
Aliphatic Hydrocarbon Solvents
Aromatic Hydrocarbon Solvents
Alcohols
Chlorinated Hydrocarbons
|
| Solubility in Water |
Insoluble
|
Applications
In addition to a coating additive, GP-905 is also recommended for evaluation in polyurethane foam systems - as a profoamer additive. Other applications include textile and thread lubricants, internal lubricant for plastics and base material for aqueous defoaming agents. Other applications include the following:
- Thread Lubricant
- Pigment Dispersant
- Wetting Agent-Solvent Systems
- Leveling & Flow Control Agent-Solvent Coatings
- Urethane Bubble Release Additive (Coatings)
- Release Agent
- Antifoam - Aqueous Systems
- Polyurethane Foam Additive (Profoamer)
Processing and Safety Guidelines
GP-905 has been formulated to be compatible with solvent based coatings and adhesives. GP-905 has a very low order of toxicity, but should still be handled with all precautions common to the use of any industrial chemical product. Consult Safety Data Sheet for additional details.
Packaging/Handling/Storage
GP-905 is supplied in 5-gallon (18 kg.) pails, 55-gallon (200 kg.) drums and 330-gallon (1200 kg.) totes. Moisture Sensitive. Keep containers tightly sealed. Store below 100° F.