Ingredients: Modified dihydroxymethyl dihydroxyethylenourea.
Appearance: Clear liquid

Performance
Solubility: Can be infinitely diluted with cold water.
Compatibility: Can be mixed with a variety of finishing auxiliaries; when blending with several auxiliaries, preliminary testing is recommended.

Functions and Applications
· Wrinkle-resistant and non-iron finishing for woven and knitted fabrics made of cotton, viscose, and their blends.
· Particularly suitable for AP wrinkle-free finishing.
· It is also used for blooming finishing, electrostatic finishing, and calendering.

Organizing effect
The finished products exhibit excellent wrinkle-free performance and very low levels of free formaldehyde, as determined by the Law 112, AATCC 112, and Shirley I methods. Even without post-finishing rinsing, they meet the formaldehyde limit specified in the Oeko-Tex Standard 100 for textiles—specifically, a free formaldehyde content of less than 75 ppm according to the Law 112 test. The treated textiles also demonstrate outstanding wash-and-wear durability, a soft hand feel, and excellent resistance to hydrolysis, as well as to both water washing and dry cleaning.

AP Compilation
· A low-energy, streamlined process that delivers the highest standard of finishing results.
· Minimal damage to fabric strength
· Extremely low free formaldehyde content in the fabric
· The fabric is less prone to yellowing compared with conventional finishing methods.
· Minimal emission of harmful gases during the sorting process

How to use
Impregnate and roll at room temperature, with a liquor ratio of 60–90%. The dosage of resin F-AP is shown in the table below:

Catalyst dosage: A catalyst, ZZL333, equivalent to 25–35% of the resin content, with a minimum of 13 g/L and a maximum of 35 g/L.

Reference Prescription
Shirt fabric (100% cotton woven fabric)
55–85 g/L: Resin ZSL400
12–20 g/L: Catalyst ZZL333
10–20 g/L: Fiber Protectant XH-P
10–30 g/L: Softener
Rolling liquid ratio: approximately 70%
Pre-drying: A standard factory process that dries the material to a residual moisture content of approximately 5–8%.
Baking: 150°C, 3 minutes
Upper garment fabric (artificial cotton fabric)
100–140 g/L: Resin ZSL-400
30–40 g/L: Catalyst ZZL333
20–30 g/L: Softener
Rolling liquid ratio: approximately 80%
Pre-drying: A standard factory process that dries the material to a residual moisture content of approximately 5–8%.
Baking: 170–175°C for approximately 60 seconds.
Outerwear knitted fabric (100% cotton knitted fabric)
40–70 g/L: Resin ZSL400
13–17 g/L: Catalyst ZZL333
20–30 g/L: Protective agent XH-P
10–20 g/L: Softener
Rolling liquid ratio: approximately 70%
Pre-drying: Standard factory process.
Baking: 170°C, approximately 30 seconds

Precautions

Compared with conventional resins, resin ZSL-400 emits lower levels of formaldehyde and carbon compounds during drying and baking.
During embossing, electrostatic finishing, and calendering, fabrics impregnated with a crosslinking agent should be pre-dried to a moisture content of 6–10% before embossing or calendering, followed by baking and setting as described above.
Since the resin reaction requires acidic catalytic conditions, it is recommended that users adjust the pH of the textile surface to a neutral range before finishing; the fabric should not be allowed to become alkaline. Only properly neutralized fabrics combined with appropriate baking conditions can ensure optimal wrinkle-free performance and the lowest possible free formaldehyde content.
For all of the above formulations, it is recommended to add 1 g/L of XH-J concentrated penetrant and adjust the working solution pH to approximately 4.0–6.5 using glacial acetic acid.
When using catalyst ZZL333 for resin finishing of viscose rayon, the addition of 0.3–0.5 g/L of citric acid can enhance the crosslinking reaction and further reduce the free formaldehyde content on the fabric.
For white fabrics, dry-state crosslinking may result in more pronounced yellowing (after re-baking). In such cases, it is recommended to conduct preliminary trials.
Since resin finishing will inevitably affect the fabric’s tensile strength and, in some cases, its color shade, users are advised to be fully aware of these effects and to conduct necessary trials based on the mill’s equipment and other operating conditions.
Due to numerous other factors—such as pretreatment, dyeing, printing, and finishing—color shade, color fastness, whiteness, strength, odor, and hand feel can all be affected. It is therefore recommended that users conduct necessary trials, particularly when finishing white or light-colored fabrics.