A special composite stabilizer for chlorinated products modified by organosilicon and its preparation method

Abstract

The invention discloses a special composite stabilizer for chlorinated products modified by organosilicon and a preparation method thereof. The composite stabilizer comprises the following components: silane-modified glycidyl ester, phosphite, polyhydric alcohol, anti-ultraviolet absorber, Antioxidant, beta-diketone. The composite stabilizer of the present invention does not affect the storage stability of the chlorinated product, does not affect other properties of the product, effectively inhibits the initial coloring of the chlorinated product, improves the yellowing resistance of the product, slows down the decomposition speed of the product, and prolongs the yellowing time. Improve the overall thermal stability of the product. The invention has potential market value.

Description

technical field

[0001] The invention relates to the field of thermal stabilizers for chlorinated products, in particular to a special composite stabilizer for chlorinated products modified by organosilicon and a preparation method thereof. Background technique

[0002] Under the influence of heat or light (ultraviolet rays) for a long time, chlorinated products can slowly decompose, release HCl, and generate chloroalkenes. The released HCl has a self-catalytic effect in the chlorinated products, which further decomposes the chlorinated products. This deep decomposition can even cause carbonization, causing the products to turn black and lose their original product performance. Therefore, in order to stabilize the processability of chlorinated products, it is necessary to improve and enhance their thermal stability.

[0003] As a special heat stabilizer for chlorinated products, it should have the following properties: ① The raw material is cheap and easy to get, non-toxic a...

Examples

Embodiment 1

[0028] A special composite stabilizer for organosilicon-modified chlorinated products, comprising the following components in parts by mass:

[0029] 80 parts of silane-modified glycidyl ester, 5 parts of phosphite, 1 part of polyol, 0.1 part of anti-ultraviolet absorber, 2 parts of antioxidant, 0.2 part of β-diketone. The phosphite is trioctyl phosphite, the polyol is ethylene glycol, and the anti-ultraviolet absorber is UV-531.

[0030] Further, the structure of the silane-modified glycidyl ester is:

[0031]

[0032] Further, it includes a preparation method of a silicone-modified compound stabilizer for chlorinated products, which is characterized in that it comprises the following steps: (1) 4mol of glycidyl methacrylate, 10ppm of catalyst chloroplatinic acid, adding three In the flask, put it in an oil bath at 60°C. After reacting for 0.5h, add 1mol of 1,3,5,7-tetramethylcyclotetrasiloxane dropwise. After the addition is complete, heat the oil bath to 80°C to continu...

Embodiment 2

[0038] Example 2 is basically the same as Example 1, except that 85 parts of silane-modified glycidyl esters, 7.5 parts of phosphites, 3 parts of polyols, 0.3 parts of anti-ultraviolet absorbers, 3 parts of antioxidants, β- 0.5 part of diketone. The phosphite is trioctyl phosphite, the polyol is ethylene glycol, and the anti-ultraviolet absorber is UV-531.

Embodiment 3

[0040] Example 3 is basically the same as Example 1, except that 90 parts of silane-modified glycidyl esters, 10 parts of phosphites, 5 parts of polyols, 0.5 parts of anti-ultraviolet absorbers, 4 parts of antioxidants, β- 0.8 part of diketone. The phosphite is trioctyl phosphite, the polyol is ethylene glycol, and the anti-ultraviolet absorber is UV-531.

technical field

[0001] The invention relates to the field of thermal stabilizers for chlorinated products, in particular to a special composite stabilizer for chlorinated products modified by organosilicon and a preparation method thereof. Background technique

[0002] Under the influence of heat or light (ultraviolet rays) for a long time, chlorinated products can slowly decompose, release HCl, and generate chloroalkenes. The released HCl has a self-catalytic effect in the chlorinated products, which further decomposes the chlorinated products. This deep decomposition can even cause carbonization, causing the products to turn black and lose their original product performance. Therefore, in order to stabilize the processability of chlorinated products, it is necessary to improve and enhance their thermal stability.

[0003] As a special heat stabilizer for chlorinated products, it should have the following properties: ① The raw material is cheap and easy to get, non-toxic a...

Examples

Embodiment 1

[0028] A special composite stabilizer for organosilicon-modified chlorinated products, comprising the following components in parts by mass:

[0029] 80 parts of silane-modified glycidyl ester, 5 parts of phosphite, 1 part of polyol, 0.1 part of anti-ultraviolet absorber, 2 parts of antioxidant, 0.2 part of β-diketone. The phosphite is trioctyl phosphite, the polyol is ethylene glycol, and the anti-ultraviolet absorber is UV-531.

[0030] Further, the structure of the silane-modified glycidyl ester is:

[0031]

[0032] Further, it includes a preparation method of a silicone-modified compound stabilizer for chlorinated products, which is characterized in that it comprises the following steps: (1) 4mol of glycidyl methacrylate, 10ppm of catalyst chloroplatinic acid, adding three In the flask, put it in an oil bath at 60°C. After reacting for 0.5h, add 1mol of 1,3,5,7-tetramethylcyclotetrasiloxane dropwise. After the addition is complete, heat the oil bath to 80°C to continu...

Embodiment 2

[0038] Example 2 is basically the same as Example 1, except that 85 parts of silane-modified glycidyl esters, 7.5 parts of phosphites, 3 parts of polyols, 0.3 parts of anti-ultraviolet absorbers, 3 parts of antioxidants, β- 0.5 part of diketone. The phosphite is trioctyl phosphite, the polyol is ethylene glycol, and the anti-ultraviolet absorber is UV-531.

Embodiment 3

[0040] Example 3 is basically the same as Example 1, except that 90 parts of silane-modified glycidyl esters, 10 parts of phosphites, 5 parts of polyols, 0.5 parts of anti-ultraviolet absorbers, 4 parts of antioxidants, β- 0.8 part of diketone. The phosphite is trioctyl phosphite, the polyol is ethylene glycol, and the anti-ultraviolet absorber is UV-531.

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