Focus HP-51

• Durability through multiple laundering cycles.
• Cost effective compared to other durable FR treatments.
• Can easily be adapted by the textile industry without modification to their existing finishing equipment and procedures.
• Minimal effect on the dye shade of fabrics.
• Minimum fabric yellowing during application.
• Good hand and little or no odor.
• Good retention of fabric strength properties (tensile and tear).
• The product Focus HP-51 is formaldehyde-free.
• Finish solutions can be applied in a more neutral pH region (4-5), eliminating the necessity for an alkaline afterwash, often required by other FR treatments.

• Application Examples: Several application examples are shown below as illustrations of the versatility of flame retardant finishing with Focus HP-51. The variations below employ the use of both glyoxal-based (e.g., DMDHEU) and melamine formaldehyde (M-F) crosslinking resins. All fabrics were desized and scoured prior to use.
• Application Procedure: The fabrics were immersed into the test solution containing the FR finish formulation, then fed through a pad applicator to ensure that both the desired level of chemistry was applied to the fabric and also that it was applied in a uniform manner. After achieving the desired wet pick-up level, the fabrics were dried and cured. The fabric must reach a temperature above 300°F for at least 30 seconds to attain an adequately cured finish. After curing, a short water afterwash procedure was performed at 140°F to remove any unbound chemicals.
• Fabric Aftertreatments
  • Woven Fabric – Water afterwash at 140°F for 15 minutes, fabric drying
  • Knit Fabric – Water afterwash at 140°F for 15 minutes, exhaust application of napping lubricant (10% add-on) at 140°F for 15 minutes, fabric drying, mechanical napping (4 passes), steaming and framing to width
• Fabric Laundering/Dry-cleaning
  • Launderings according to AATCC Test method 124-1996
  • Dry cleaning (commercial) & lab wash for knit only
• Flammability Tests
  • Vertical Burn – ASTM D6413-99
  • 45 Degree Angle Burn – CPSC 16 CFR 1610
  • Limited Oxygen Index – ASTM D2863-00
• Fabric Physical Tests
  • Tensile strength – ASTM D5035-90
  • Tear strength – ASTM D1424-96

Focus HP-51 was recently developed as a new engineerable durable/semi-durable phosphorus-based FR finishing system for woven as well as non-woven cellulosic and synthetic fabrics. When used in combination with common durable press crosslinking resins (e.g., glyoxal and/or melamine-based), Focus HP-51 provides a chemically bound reaction product that can withstand multiple launderings. Depending on the binding resin utilized, the FR treatment can have minimal effect on fabric physicals (e.g.; strength retention and hand), little if any affect on the fabric dye shade, no odor, and contain zero formaldehyde. Applicable finishing systems employ only commonly available inexpensive durable press (DP) application chemicals. The new FR finishing system has been validated on full-scale equipment in several textile mills.