Preparation and application of a kind of silicon-containing dendritic-linear fatliquoring agent

Abstract

The invention discloses a preparation method of silicon-containing dendritic-linear greasing agent, which comprises the steps that allyl glycidyl ether, end hydrogen-containing polysiloxane and chloroplatinic acid are added to a reactor, and undergo a reflux reaction; end ring alkoxy polysiloxane is obtained; end ring alkoxy polysiloxane reacts with acrylic acid to synthesize a functional polysiloxane long chain with epoxy radicals at one end and double bonds reserved at the other end; functional polysiloxane and first-generation polyamide-amine are added to the reactor and mixed, react, and then are purified; and the silicon-containing dendritic-linear greasing agent with functional groups is obtained. The silicon-containing dendritic-linear greasing agent can serve as a leather greasing agent in a leather greasing process; the prepared silicon-containing dendritic-linear greasing agent has the polysiloxane long chain and can endow leather with excellent flexibility, the reserved double bonds can further provide reactive groups, and facilitates performance optimization later; and an dendritic-linear structure has a certain filling effect, and can allow that the leather has good fullness and softness after applied to a product obtained by the leather greasing process.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular to the preparation and application of a dendritic-linear fatliquoring agent containing silicon. Background technique [0002] Polysiloxane has low surface tension, excellent flexibility and water vapor permeability, so it is widely used in leather processing. The advantages of dendritic polymers, such as large terminal group functionality, high reactivity and branched structure, have also attracted widespread attention. The amino-terminated polyamide-amine has a relatively small molecular weight, a high amino content, and a more active reaction. Therefore, the reaction rate can be effectively adjusted by controlling the reaction conditions and the feeding ratio, and the reaction system can quickly undergo grafting reaction. [0003] Most of the currently synthesized fatliquors are linear structures or linear fatliquors with few branches. Due to their relatively simple str...

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Problems solved by technology

[0003] Most of the currently synthesized fatliquors are linear structures or linear fatliquors with few branches. Due to their relatively simple structure and single function, but for the development trend of high-efficiency, multi-functional, and firm-bonded fatliquors, the current large The simple structure of most of these fatliquoring agents is also difficult to meet these requirements

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