A styrene / acrylate, copolymer, hydrophobic dispersion. Provides excellent adhesion, water resistance and an outstanding strength to inorganic substrates. Can be used to produce highly waterproof films, which adhere strongly even in damp conditions.
The formulation of BritPrimer HD allows it to perform optimally, providing enhanced adhesion to even the most difficult of substrates. This optimal performance also allows BritPrimer HD to improve the workability of the Brit Adhesives’ range of cementitious tile adhesives, offering numerous benefits including:
Good compatibility with pigments and fillers
SPECIFICATIONS:
£12.65 – £41.30 +VAT
Consumption: The consumption of Brit Primer HD depends on the porosity and absorption of the substrate. Normal consumption is between 0.15 and 0.25 kg/mz.
BritPrimer HD is a high end deep sealing primer, which has excellent mechanical strength, with excellent adhesion even in wet conditions. It forms a highly flexible membrane that has excellent crack bridging and waterproofing properties.
Brit Primer HD can be used on absorbent and less absorbent substrates. Prevents over rapid dehydration of thin bed mortar and levelling compounds, prolongs open time, improves adhesion and prevents shrinkage cracking of covering layers
BritPrimer HD is ideal for use in pasty construction and tile adhesives whose high adhesive strength is not affected by water or dampness. BritPrimer HD can be used to produce construction adhesives and primers conforming to strict eco-labelling requirements.
BritPrimer HD is best suited for use with the Brit Adhesives range of cementitous tile adhesives as they have a common polymer structure. It is also ideal to use with tile adhesives that conform to EN 12004 and ready-to-use D2 tile adhesives. It is recommended for use prior to the application of all waterproofing systems.
BritPrimer HD is highly compatible with standard pigments and fillers. When using the dispersion in the preparation of filled, pasty compounds, it is advisable to raise its pH to a value > 7.5 prior to the addition of fillers. Since BritPrimer HD contains no free ammonia, ammonia-free compounds can be prepared by adding KOH or AMP-95®. Because of the low minimum film forming and glass transition temperature an addition of organic solvents or plasticizers is not necessary.
Brit Primer HD is a fine-particle 50% dispersion of a styrene/acrylic acid ester copolymer in water. Films based on Brit Primer HD possess high water resistance and excellent adhesion even in wet conditions. Brit Primer HD is also produced without the use of film-forming agents. Brit Primer HD is a dispersion with optimum combination of high performance and positive ecological aspects. The dispersion is produced without the use of alkyl phenol ethoxylate (APE) containing compounds, organic solvents and plasticizers.
| Specification Data | Inspection Method | Value |
|---|---|---|
| Solids content | DIN EN ISO 325 | 49 - 51 % |
| Viscosity, dynamic at 23 °C Measurement condition for the method | DIN EN ISO 2555 Brookfield, spindle 3/20rpm | 700 - 3000 mPa.s |
| pH Value | DIN/ISO 976 | 7.0 - 8.0 |
| Typical General Characteristics | Inspection Method | Value |
|---|---|---|
| Min. film forming temperature | DIN ISO 2115 approx. | 0°C |
| Predominant particle size | specific method | approx. 100mm |
| Protective colloid/emulsifier system | surfactants | |
| Compatibility with cement | specific method | incompatible |
| Appearance of the dispersion film | visual | clear, glossy |
| Glass transition temperature | specific method approx. | 0°C |
| Polymer | Styrene / Acrylate |
| Hydrophobic Effect | YES; very strong |
| APEO | APEO Free |
| TVOC | Does not contain solvents, no need for coalescing aid |
| Adhesion & Water Resistance | Excellent |
| Solids Content | 50% |
| Viscosity | ~1800 mPa s |
| MFFT | +0°C |
| Tg | +0°C |
| Stabilisation | Anionic, surface active substances |
| APPLICATION: | RECOMMENDATION: | SUITABILITY: |
|---|---|---|
| Tile Adhesives (EN 12004) | Ready-to-Use D2 Tile Adhesives | Highly Recommended |
| Primers | High Spec. Primers Adhesion Primers Deep Sealers | Highly Recommended Highly Recommended Recommended |
| Waterproofing | a) Membranes with high mechanical strength b) Highly flexible membranes with excellent crack-over-bridging | a) Recommended b) Highly Recommended |
Tools and containers should be washed at once with clean water. Any remaining residues once dry have to be removed mechanically.
BritPrimer HD can be stored for up to 12 months, in its original unopened packaging. Store in a cool frost protected place. As polymer dispersions may tend to superficial film formation, skins or lumps may be formed during storage or transportation. A filtration process is thus recommended prior to utilization of the product
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