Brief introduction

FR-CU is an efficient cyclic phosphonate flame retardant for the treatment of textile products. It is non-corrosive with high phosphorus content, excellent water solubility on a wide range of fabric type. It mainly used in furnishing, curtaining, building, special workwear and automotive applications. It is particularly suitable for the treatment of polyester fabrics, T/C blends and PU coating to impart a finish that is durable to washing and dry-cleaning.

Specification

Appearance: Color Number: Phosphorus, Wt%:  Acid Number (mg KOH/g):    Density (g/cc @ 25°C): Viscosity @ 20°C (Cps): Flash Point: DMMP Assay, Wt%:  TMPP Assay, Wt%: Durable to washing times:

Clear highly viscous liquid 100 max. 20.5% min. 15 max. 1.2-1.3 150000max. 165°C 0.5%max. 0.5%max. 50 times min.

Properties

Low volatility and good compatibility to major polymer

• High heat stability and good retain of hand feel and drape after processing
• Little discoloration after treatment
• High durability to washing and good retain of color brightness.
• Non-toxicity and high safety.

Typical application process

1. Treatment of polyester fabric and T/C blends

A. Recommendatory formulation

Flame retardant      6~15kgs
added water,          20kgs stirred evenly
added 20% conc.Na2HPO4 or Na2CO3   4~8kgs   pH is buffered to 5.5~6.5
or 25% conc. aqua ammonia added penetrating agent 0.05~0.2kgs mixed evenly
additional water the formulation was diluted by water to 100kgs.

B. Procedure

1. Fabrics for treatment with flame retardant should be clean and absorbent. Starch and other sizes should be removed before processing.
2. Fabrics shall be treated by padding, dipping according to fabric composition, weight and construction.
3. 120~140�C�60sec., pre-drying
4. High temperature thermofixation process:
   PET fabric:  plain fabric   195~205�C�40~60sec. 
   Knitted fabric  185~205�C�40~60sec. 
                      PA fabric:   160~180�C�40~60sec.
5. Cooling, rolling up the treated fabric. To improve the hand feel, fabric can be cleaned again if necessary to remove the un-affixed flame retardant on the fabric.

2. Coating treatment of Polyester fabric and PU fabric

Formulation details

The formulation is dried and cured in a single pass at 150°C for 120 seconds.
The formulation is buffered to pH 5 using Sodium Carbonate. The added amount of soda ash is about 0.4%.

1. Required add-on level for polyester fabric is only no less than 1.4% w/w to achieve performance if the flame retardant is affixed effectively on the fabric.
   (The above motioned information is according to our own acknowledged and experience. It� � is advised to make lab trail and small batch trail before formal treatment to get optimum processing condition.)
2. If the treatment is completed, after 50 times of washing under 60°C, there is still at least 90% flame�
   retardant on the fabric.
3. Considering the treatment of high temperature thermofixation processing, we think it is very important to select suitable dyestuff for polyester fabric, otherwise, discoloration or color fading may occur.