The composition on the basis of cellulose ethers for recycling in light - and heat-resistant film

 

(57) Abstract:

Usage: the invention relates to the chemical industry, in particular to the technology of organic compounds. It can be applied in the production of synthetic fiber and film materials of complex and difficult-mixed esters of cellulose. The substance: invention allows to effectively protect film of cellulose triacetate (TAC) away from light and thermooxidative destruction due to the fact that the proposed composition includes 8 - 10 wt. % TAC, 0.01 to 0.02 wt.% 1,5-di-[1', 5', 6'-trimethylpentanediol-2'] 3-L-arabinosidases and up to 100 wt.% a mixture of methylene chloride with ethanol in a volume ratio of 9 : 1,1 table.

The invention relates to the chemical industry, in particular to the technology of organic compounds. It can be applied in the production of artificial fibrous film materials of complex and difficult-mixed esters of cellulose. Products derived from such polymer compositions are highly resistant to harsh UV and heat stability.

In the process of formation of films and fibers from solutions of complex and difficult-mixed cellulose ethers and carboxylic acids are used the ity of polymeric materials and greatly expand the scope of their practical use.

A known solution for forming films consisting of cellulose triacetate, soluble fraction of bee glue, propolis and solvent (ed. St. USSR N 539047, class C 08 L 1/10, 1976). Received from his films possess enough high light and temperature resistance.

The closest to the technical nature of the claimed invention is a solution for forming films containing cellulose triacetate, a solvent and as a low molecular weight modifying additives derived formazan (ed. St. USSR N 771121, class C 08 L 1/12, 1980).

The composition of the solution of the prototype the following, wt%:

The cellulose triacetate - 8-10

1(2'-Minoxidil)-3,5-diphenyltriazene - 0,006-0,03

Solvent - Rest

Received from his films possess enough high light and temperature resistance.

The purpose of the invention is the increase of light and heat resistance of the films of cellulose triacetate.

This objective is achieved in that the polymer composition for forming films consisting of cellulose triacetate, derived formosana and an organic solvent, contains as derived formazan 1,5-di-(1', 5',6'-trimethylpentanediol-2')-3-L-arabinosidases the next time the ratio of the - Else

The main characteristics of the proposed modifying additives 1,5-di-(1', 5',6'-trimethylpentanediol-2')-3-L-arabinosidases published in the following literary source: Sedov Y. A., Bednyagin N. P., Postovsky I. Ya New case of spontaneous formation of formisano. //Journal of General chemistry. -1967.-Volume 37, issue 1. S. 139-140 (compound IV).

We believe it is necessary also to note that the above connection is different from the prototype-1-(2'-Minoxidil)-3,5-diphenyltriazene greater accessibility; its synthesis is carried out in water-piridinovy environment.

The invention is illustrated by the following examples and table.

Examples 1-4. To obtain films using a composition containing the following components, wt%:

The cellulose triacetate - 8-10

1,5-di-(1', 5', 6'-trimethylpentanediol-2')-3-L-arabinosidases - 0,01-0,02

Solvent - Rest

Triacetate cellulose with acetyl number 61,8% is dissolved in an organic solvent a mixture of methylene chloride with ethanol (volume ratio of 9:1) containing 1,5-di-(1', 2',6'-trimethylpentanediol-2')-3-L-arabinosidases.

Preliminary dissolution modifying additives in the Bina is entrusted stirring for 30-40 min and full visual homogenizing the polymer solution was filtered from nerastvorim of polyethylene particles on the filter, and then obezvozhivani at 20oC.

The thus prepared polymer composition is applied through a flat slit die plate on the glass surface, where the slow evaporation of the solvent. The moving speed of the nozzle is maintained constant. The thickness of the films average of 40-50 microns.

Samples TAC film is subjected to ultraviolet irradiation mercury-quartz lamp GOK-2 full spectrum radiation. Artificial insolation was performed at room temperature in air. The subjects of the film reinforce at a distance of 30 cm from the light source. After irradiation the samples incubated in the dark for 120-150 h to eliminate the influence on the results of further investigations of the aftereffect.

After irradiation TAC films measured decrease of the characteristic viscosity of the polymers.

Thermostability of modified TAC films appreciate the kinetics of changes in their weight, depending on the content of the modifying additive and the heating temperature in isothermal conditions.

Properties of films after UV irradiation of mercury-quartz lamp GOK-2 and thermal-oxidative treatment are presented in the table.

Examples 9-10 (control). Get solutions of cellulose triacetate without modifying additives. The properties of the formed films after UV irradiation of mercury-quartz lamp GOK-2 and thermal-oxidative treatment are presented in the table.

The table shows that as a result of the introduction of polymer compositions based on cellulose triacetate 1,5-di(1',5',6'-trimethobenzamide-2')-3-L-arabinosidases substantially increases the resistance formed of these films photo - and thermal-oxidative decomposition.

The use of the claimed invention makes it possible to produce TAC film with improved utility and performance.

The technology of obtaining films of the proposed structures do not change in comparison with the known solution.

The composition on the basis of cellulose ethers for recycling in light - and heat-resistant film, comprising the ve derived formazan composition contains 1,5-di-(1',5',6'- trimethylpentanediol-2') -3-L-arabinosidases in the following ratio of components, wt.%:

The cellulose triacetate - 8 - 10

1,5-Di-(1', 5', 6'-trimethylpentanediol-2')-3 - L-arabinosidases - 0,01 - 0,02

Organic solvent - Ostalnoe

 

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Foil // 2245792

FIELD: layered products.

SUBSTANCE: foil comprises basic foil made of oriented polypropylene foil or foil made of polyethylene terephthalate metallized from one side. One side of the foil having the metallized covering is provided with print covering which in turn is provided with lacquer welded under high temperature conditions.

EFFECT: simplified packing of products.

12 cl, 2 dwg

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