Norst® PB-402-24
- CASE Ingredients Features
- Good ElasticityGood TackHigh Film ThicknessHigh Tensile StrengthOxidation ResistantStain ResistanceTemperature ResistanceWater ResistanceWeather Resistance
- Chemical Family
- Hydrocarbons
Norst® PB-402-24 is a highly modified polyisobutylene polymer that exhibits high tack and cold flow over a very wide temperature range (-70°F to 450°F, with variants stable to 650°F and 800°F). It is impermeable to water or oxygen. It has good tensile and bond strength, high film strength, permanent tackiness, excellent aging/weather resistance, low stain, low electrical conductivity. It is odorless, colorless, and highly stable. Chemical resistance is comparable to other polyisobutylene polymers. PB-402-24 can be used as a high performance additive in any non-aqueous system where high tack and elasticity are needed.
Identification
- CASE Ingredients Functions
- Tackifier
Product families
- Surface Modifiers
Other characteristics
- Brand
- Norst
- End Uses
Pressure Sensitive Adhesive, Solventborne Adhesive
- Features
Good Elasticity, Good Tack, High Film Thickness, High Tensile Strength, Oxidation Resistant, Stain Resistance, Temperature Resistance, Water Resistance, Weather Resistance
- Functions
- Tackifier
- Compatible Polymers & Resins
- Polyethylenes (PE), Polypropylenes (PP)
- Usage
- Adhesives
- High tack and elasticity in PSA adhesives; water and gas proof barrier in sealing tapes; cold flow properties make it ideal for use in "self-healing" barrier products. Variants functional at very high temperatures, Norst® PB-403-34 up to 650EF ( 343EC), Norst® PB-404-44 up to 800EF (427EC).
- Sealants
- Waterproof and gas proof barrier; excellent tack and elasticity for sealants and mastics; cold flow over a wide temperature range in "self-healing" products; good internal cohesive strength.
- Markets
- Adhesives & Sealants
- Printing & Packaging
- Products
Industrial and nonwoven adhesives, barrier tapes, electrical insulation and cable filler, construction mastics and caulks, window and door sealants, waterproofing compounds, pipeline protection, roofing membranes, bitumen modification, etc.
- PACKAGING
45 pound boxes; 350 pound open head drums.; Quick Release boxes available. Drums are coated for clean, efficient unloading.; 25 pound Quick Release boxes also available.
- Technology
- CASE Ingredients
- Classification
Proprietary polyisobutylene polymer. 100% solids. Available at 50%-70% solids in mineral spirits.
- Packaging Type
- Drums
- Adhesive & Sealant Type
- Pressure Sensitive Adhesive
- Solventborne Adhesive
- Compatible Polymers and Resins
- Polyethylenes (PE)
- Polypropylenes (PP)
- Substrates and Systems-Chemistry Non-Polar
- Core structure
- Distinctly branched aliphatic which gives excellent chemical, weather and oxidation resistance, stability and low color. Best functioning in butyls, EPM/EPDM, microcrystalline wax, asphalt and, polypropylene, HDPE, LDPE, polyisobutylene, etc.
- Diluents and carriers
- Aliphatic and napthenic solvents work very well. Suitable for solvent-based composition hot melt adhesive and sealant applications, and can be formulated with other polymers, resins, filters, pigments, oils, thickeners, waxes and stabilizers to obtain a desired balance of properties. Avoid strong oxidizers. NorthStar Elastomers provides broad product modification opportunities through blending of custom polymers to modify tack, elasticity, temperature stability, etc.
- Polar polymers
- (Such as urethanes, acrylics, polyesters and polyamides) are generally incompatible. Avoid polar solvents.
Technical data
Table 1 of 1
14 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Average Mass (Mw) | 78753.0 | — | — |
| Average Number (Mn) | 1941.0 | — | — |
| Density (20°C) | 0.91 | g/cc | — |
| Dispersity | 40.6 | — | — |
| Glass Transition Temperature (20°C/Min) | -77 ± 1 | °C | DSC |
| Modulus Loss (G") | 6356.0 | Pa | — |
| Modulus Storage (G', 25°C) | 15330.0 | Pa | — |
| Penetration Range (Cone Penetrometer, 150 gm Weight, 5 seconds at 77°F) | 150-299 | — | — |
| Staudinger Index | 48.5 | ml/g | — |
| Viscosity Range (212°F) | 820,000 - 860,000 | cps | — |
| Viscosity Range (300°F) | 332,000 - 372,000 | cps | — |
| Viscosity Range (350°F) | 240,000 - 280,000 | cps | — |
