SU1232710A1 - Automatic electroption of acetyl cellulose materials - Google Patents

Description

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The invention relates to the industry of chemical fibers and plastics and can be used in the production of fibers, plastics, varnishes and coatings from acetyl cellulose materials.

The aim of the invention is to improve the light stability of acetylcellulose materials.

PRIMER K To a dimethylformamide solution of cellulose acetate (AC) add isorhamnetin, a flavonoid compound isolated from the freon meal of the sea-buckthorn fruit.

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dissolve, after which films are cast from solution. The obtained film samples are painted in the color # 1nB1 color, and the color is significantly resistant to the action of a soap-soda solution at 40 and.

In tab. 1 and 2 shows the data characterizing the light resistance of the film, pu.puchenk in examples 1-4, in comparison with the known method.

The duration of UV irradiation is 10 hours (Table 1) and 24 hours (Table 2).

Table 1

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in the amount of 0.5% by weight of the AC. The mixture is stirred until complete dissolution of isorhamnetin, after which films are cast from solution. The obtained samples of the films are colored in yellow color, while the color is significantly resistant to the action of soap-soda solution at 40 and 100 C.

Example 2. To a 1% solution of a dimethylformamide solution of AC, isorhamnetin is added in an amount of 1% by weight of AC. The mixture is stirred until complete dissolution, after which films are cast from the solution. The obtained film samples are colored yellow, while the color is highly resistant to the action of a large soda solution at AO and 100 ° C.

Example 3. To a 1% dimethylformamide solution of AC, isorhamnetin is added in an amount of 25% by weight of AC. The mixture is stirred until complete dissolution, after which films are cast from the solution. The obtained samples of films are painted in a yellow-brown color, while the color is significant: it is resistant to the action of M)) W: nano-soda solution, at 40 and 100 C.

Example 4. To a 1% dimethylformavdnom solution of blood pressure added czoramnetin in an amount of 3% by weight of AC. Mixture mixes up to full

VNShShI Order 2740./28 Tyr; to 432Subscription

Prozk.-popigr. iip-tie, Uzhgorod Project Project, 4

Dihydro coumarin (limestone)

Isorhamnetin (proposed)

1, 1 34.6 48.1 62.6- 74.0

37.9 58.3 69.4 82.0 79.0

table 2

Dihydro coumaryk (lime)

Isorhamnetin (proposed)

12.2 24.6 26.7 51.4 55.1

29.8 48.2 56.8 79.0 65.6

Claims (1)

METHOD OF LIGHT STABILIZATION OF ACETYL CELLULOSE MATERIALS by introducing a light stabilizer into the spinning solution of cellulose acetate, characterized in that, with the aim of increasing the light resistance of materials, isoramnetin of the formula is used OH about in an amount of 0.5-3% by weight of cellulose acetate.