1. Project Introduction

Aluminum diethylphosphinate is widely used in the flame retardant modification of engineering plastics including fiberized nylon/polyester and epoxy resins. According to statistics, the global production and sales of aluminum diethylphosphinate reached 13,000 tons/year, of which Clariant in Germany reached 10,000 tons/year, and several domestic companies totaled 3,000 tons/year, with an annual output value of 1 billion yuan.

With the rapid development of the domestic electronic appliance and textile industries, the use of flame retardant materials continues to increase, and the demand for aluminum diethylphosphinate also continues to increase. However, there are two main reasons that limit the rapid development of domestic aluminum diethylphosphinate. First, the preparation of sodium diethylphosphinate, a key intermediate for aluminum diethylphosphinate, is technically difficult. In particular, the environmentally friendly aqueous phase preparation method is the exclusive monopoly of Clariant in Germany. Clariant has also launched legal proceedings and other suppression measures against domestic companies that illegally use patented technology. Second, Clariant's technology requires highly corrosive additives such as sulfuric acid and a higher reaction temperature of 80-100 degrees, which requires high equipment and has poor safety.

In response to the above situation, we have developed a new generation process for preparing sodium diethylphosphinate at room temperature. The reaction conditions are mild. Using water as the reaction medium and without additives such as sulfuric acid, sodium diethylphosphinate can be quickly prepared at room temperature. Compared with the prior art, the reaction device is conventional, no additional complex reactor is needed, the investment is small, the reaction does not require additional heating, and the safety is high.

2. Cooperation content

(1) Brief introduction of the main relevant technologies involved

(2) Proposed cooperation areas and partners

The global use of flame retardant modified nylons and polyesters is expected to reach 1.3 million tons in 2020. According to the penetration rate of 15% of halogen-free flame retardants and the addition amount of 15%, 30,000 tons of aluminum diethylphosphinate are required. The current output can only meet half of it. In addition, in the textile field, which has advantages in China, aluminum diethylphosphinate has just been put into use, and the demand is increasing rapidly.

(3) Proposed cooperation model

Technical consultation, technical services, technology transfer, technology licensing, industrialization