Previous attempts have been reported to produce carbon black similar to that obtained by the furnace and槽method. For instance, the Japan公报 No. 54-7632 disclosed a method involving vaporizing the raw hydrocarbon materials and then introducing them into the furnace, resulting in carbon black with an EM average particle size of 9nm, an EM particle size standard deviation of 5.7nm, and a BET surface area to EM surface area ratio of 1.25, as well as carbon black with an EM average particle size of 14nm, an EM particle size standard deviation of 5.5nm, and a BET surface area to EM surface area ratio of 1.25.

Ketone/Nitrogen Ketone Method

In the pre-polymer blending method, when using water-soluble diamine as a chain extender, it's difficult to obtain a fine and uniformly sized dispersion due to the rapid reaction rate between the amine and -NCO group. Using ketones or ketone diazenes instead of diamines for aqueous chain extension during the chain extension stage can resolve this issue. Ketones are formed from the reaction of ketones with diamines, and ketone diazenes are formed from the reaction of ketones with hydrazine. When mixed with end-NCO聚氨酯 pre-polymers containing ionic groups, ketones/ketone diazenes do not undergo chain extension prematurely. However, upon contact with water, the ketones/ketone diazenes react with water to release diamines/hydrazine, water-based polyurethane manufacturers, which extend the pre-polymers. Due to the constraint of the release reaction, the chain extension proceeds smoothly, resulting in a high-performance water-based polyurethane urea dispersion.

Ketone/ketone azo method is suitable for preparing waterborne polyurethane dispersions from aromatic compounds. This method combines the advantages of the propyl method and prepolymer blending, and is used to produce high-quality waterborne polyurethane.

Acid dyes are widely used for dyeing wool, nylon, silk, and other fabrics, but they generally suffer from poor color fastness. To address this issue, a new-generation formaldehyde-free acid dye fixative, PCF, has been developed. It is an odorless, colorless liquid that can be easily diluted with water. A 1% PCF solution has a pH of 2.0. The dyed materials treated with PCF show significantly improved wash fastness, no color change, and no concerns about contamination or sticking after treatment. It features minimal color variation, and notable improvements in soap-washing, perspiration, and abrasion fastness.

PCF can be used in the same bath with various cationic, non-ionic surfactants, or cationic synthetic resin prepolymers.

Technical Specifications: Fabrics treated with acid fixing agent PCF meet standard requirements for both dry and wet rub fastness, as well as other wash and perspiration fastness.

Application Range: Fixation and finishing for various fabrics such as wool, nylon, silk, leather goods, etc. Recommended use: Germany NBS Acid Fixing Powder Chemical and Physical Properties: Appearance: Brownish yellow powder, Ionicity: Anionic, pH:

Value: 7.0-8.0 (1% water solution)

Waterborne Polyurethane Manufacturer - Luoxing Co., Ltd. (Online Inquiry) - Hubei waterborne polyurethane is supplied by Zhejiang Luoxing Chemical Co., Ltd. Zhejiang Luoxing Chemical Co., Ltd. has dedicated much passion and enthusiasm to the field of polyurethane raw materials. Luoxing always focuses on customers, creating value for them, and winning the market through quality and service. We sincerely hope to cooperate with all sectors of society to create success and brilliance together. For related business inquiries, please contact Manager Yao. Meanwhile, our company also specializes in Zhejiang PU leather manufacturers, Guangzhou PVC leather producers, and Wenzhou leather goods wholesale. Welcome to call for consultation.