Knowde Enhanced TDS
Identification & Functionality
- Base Chemicals Functions
- Technologies
- Product Families
- Structure
Ravecarb 107: n=6; m=6
Features & Benefits
- CASE Ingredients Features
- Features
Superior Resistance to
- Temperature
- Hydrolysis
- Degradation by Ultraviolet Light
- Oxygen
- Solvents
Tensile strength Excellent Heat stability Excellent Weather ability Excellent Hydrolysis resistance Excellent Fungi resistance Good Oleic acid resistance Excellent
Applications & Uses
- Applications
- Base Chemicals End Uses
- Uses
- When used in PUR formulations, Ravecarb 107 provides superior resistance to hydrolysis and to degradation by ultraviolet light, oxygen and solvents.
- The liquid state makes very easy the use of Ravecarb 107 to prepare polyurethane emulsions suitable for inks, leather finishing and in general everywhere high resistance to aging is requested.
- Polyurethane coatings, sealants and adhesives with high performance can also be formulated with Ravecarb 107.
- Used in paints and varnishes, synthetic leather, thermoplastics, adhesives.
- General Formulations
Properties
- Physical Form
- Appearance
- Liquid
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Chemical Structure | Copolymer from hexandiol and pentandiol | - | - |
| Theoretical OH Functionality | 2.0 | - | - |
| OH number | 58 - 64 | mgKOH/g | - |
| Average Molecular Weight | 1850.0 | - | - |
| Acidity number | 0.1 | mgKOH/g | - |
| Water | 0.1 | % | - |
| Viscosity (50°C) | 8000.0 | cps | - |
| Tensile strength (Aliphatic PUR) | 61.0 | N/nm | - |
| Section Modulus (100%, Aliphatic PUR) | 8.5 | - | - |
| Elongation (Aliphatic PUR) | 1100.0 | % | - |
| Tensile strength (Aromatic PUR) | 62.8 | N/nm | - |
| Section Modulus (100%, Aromatic PUR) | 9.5 | - | - |
| Elongation (Aromatic PUR) | 1200.0 | % | - |
Technical Details & Test Data
- Viscosity vs Temperature
- Ravecarb and Elastomeric “PUR”
A urethane polymer is the reaction product of a high molecular weight polyol, a short difunctional chain extender, and an aliphatic or aromatic diisocyanate (here is no difference in the formulation technique between Ravecarb and polyols of different natire). It produces a (AB) type polymer composed of alternating hard and soft segment:
The soft segment is the high molecular weight polyol chain, and the hard segment is the reaction product of the chain extender and the diisocyanate. As the concentration of the hard segment increases, the modulus of the urethane increases, and the opposite when the soft segment increases. In addition, the nature of the hard segment can be modified by the choice of an appropriate crosslinker.
- Hydrolysis Resistance Tensile Strength Loss (water at 85°C)
