Method of obtaining factice for production of frost-resistant chloroprene rubbers

FIELD: rubber industry.

SUBSTANCE: factice is obtained by heating vegetable oil with sulfur and modifier in presence of catalyst and initiator, said vegetable oil being, in particular, grape oil produced from grape grains and containing 68.3-75.4% linolic acid, and said modifier being dimethacrylic acid triethylene glycol ester in amount 10-20% of the weight of reaction mixture. Modifier may further contain trimethylolpropane or dimethylvinylethynylcarbinol diallyl ether or syrup thereof.

EFFECT: improved quality and stability of factice, which enables utilization thereof as frost-resistant plasticizer and softener in manufacture of frost-resistant chloroprene rubbers having high physico-mechanical and technological characteristics.

4 cl, 1 tbl, 4 ex

 

The invention relates to a method of producing factis with high quality and stability, which can be used both as a cold-resistant plasticizer and softener to obtain resistant chloroprene rubber, used in the aviation industry as sealants (frost -70 - -80° (C), as well as in rubber, cable, tire industry and other fields.

All currently known to fantisy used in rubber compounds as a softening agent to improve the processing properties, and to obtain resistant rubbers must use cold-resistant plasticizer.

It is known that to obtain resistant chloroprene rubber usually use cold-resistant plasticizer is dibutyl phthalate being received for latex ("Nairit M") [1].

However, the resulting cold-resistant rubber (frost -55° (C) have low physical-mechanical and technological parameters, and used cold-resistant plasticizer is highly volatile, which products become brittle and out of operation.

Known also use as a cold-resistant plasticizer to obtain resistant chloroprene rubber triethyleneglycol ether dimethacrylate acid (TGM-3), CA is used simultaneously as a substitute softener ("missing the mark"), frost -52°C [2]. "Nairit MK" is a joint product of the polymerization of chloroprene with TGM-3 or a homopolymer of chloroprene, modified TGM-3 stage latex at a temperature of 40-45°C. Obtained in this frost-resistant rubbers have low physical-mechanical and technological performance that is explained by the formation of homopolymer TGM-3.

Known industrial method of producing factice by reacting a mixture of sunflower and linseed oils (1:1) or linseed oil with sulphur, which is used as softener in rubber industry [3]. However, the resulting factis no effect on frost-resistant properties of rubber.

A known method of producing factice by the interaction of sunflower oil with sulfur modified high-boiling waste production dimethylphenylcarbinol in the presence of a catalyst [4].

The obtained modified factis also has no effect on frost-resistant properties of rubber and is used only as a softener, and using a modifier consisting of a mixture of 9 different terpenoids, leads to improvements in the method of producing pactica and improving quality, lowering the temperature and reducing the duration of the process, the reduction of free sulfur and acetone extract, and so is e to increase elasticity, which leads to the catalyst factsaboutme. In addition, the use of sunflower oil containing 42-56% linoleic acid, leads to deterioration of the quality of pactica and related to the deterioration of the physico-mechanical characteristics of rubber.

The invention consisted in the production of a new type of Paktia, who first had to change its nature only as a softener and act simultaneously as a new cold-resistant plasticizer and softener, which can be used to obtain resistant chloroprene rubber with high resistance to frost (frost -70 - -80°and improved physical and mechanical properties for their application in aerospace and Astronautics as sealants, as well as in other areas.

This objective is achieved in that in the method of producing factice by heating vegetable oils and sulfur modifier as vegetable oil use oil extracted from grape seeds, which contains 68.3-75.4% linoleic acid, and as a modifier - 10-20% by weight of the reaction mixture triethyleneglycol ether dimethacrylate acid (TGM-3), in the presence of a catalyst and an initiator.

As an additional modifiers use 10-30% by weight of the reaction mixture dially the new ether of trimethylolpropane or dimethylphenylcarbinol or syrup.

Getting factis as a new cold-resistant plasticizer (frost -70 - -80° (C) due to use as the primary modifier triethyleneglycol ether dimethacrylate acid (TGM-3).

Additional modifiers result in improved quality of Paktia, lowering the temperature and reducing the duration of the process, to increase the elasticity, adhesion, toughness, dynamic endurance, but have no effect on frost-resistant properties of chloroprene rubber and do not change the essence of the claimed invention[4, 5, 6, 7, 8, 9, 10, 11].

The invention allows to obtain a stable factis high quality, which can be used as a new cold-resistant plasticizer and softener at the same time to obtain resistant chloroprene rubber that can be applied in aerospace and Astronautics as sealants, surpassing used in the present sealants, as well as in other areas.

Example 1. 150 g of grape seed oil is heated to 120°add 24.9 g (16.6% by weight of the reaction mixture) of sulfur and stirred at 130-140°C. After added 18.2 g (12.1% by weight of the reaction mixture) TGM-3, 0.4 g (0.26% by weight of the reaction mixture) of cyclohexanone peroxide and stirred for 1 hour at 130-140°and then 0.5 g (0.3% by weight of reactionnaire) altaxe and stirred for 3 hours to 160° After at a temperature of 120-130°to sagadevan. Get 193.9, (˜100%) kauchukopodobnoe soft product d420=1,02, the acetone extract is 11%free sulfur - 0.6%.

Example 2. 150 g of grape seed oil is heated to 120°add 29.9 g (17.9% by weight of the reaction mixture) of sulfur is added and stirred for 1 hour at 130-140°With, then add 25 grams (16.6% by weight of the reaction mixture ) TGM-3, 0.5 g (0.3% by weight of the reaction mixture) of cyclohexanone peroxide and stirred for 2 hours at 130-140°C. Next, add 0.6 g (0.4% by weight of the reaction mixture) altaxe and 16.6 g (11% by weight of the reaction mixture) dialiawah ether of trimethylolpropane and mix to 160°C for 2 hours, then at 120-130°to sagadevan. Get 222 g (˜100%) kauchukopodobnoe soft product, d420=1,03, the acetone extract - 10%, free sulphur - 0.5%.

Example 3. To 150 g of grape seed oil added 28.3 g (18.8% by weight of the reaction mixture) dimethylphenylethylamine, 0.03 g (0.02% by weight of the reaction mixture) of cyclohexanone peroxide and heated at 60-65°C for 5 hours in a stream of nitrogen. After the temperature was raised to 120°and add portions of 29.9 g (19.9% by weight of the reaction mixture) of sulfur, 26.6 g (17.7% by weight of the reaction mixture) TGM-3, 0.3 g (0.02% by weight of the reaction mixture) of cyclohexanone peroxide and stirred for 1 hour at 120-130°C, after which dobavlaut 0.5 g (0.3% by weight of the reaction mixture) altaxe and stirred for 2 hours at 130-140° And then when 120-130°to sagadevan. Get 234.7 g (˜100%) kauchukopodobnoe soft product d420=1,02, the acetone extract is 12%free sulfur - 0,6.

Example 4. Analogously to example 1, 150 g of grape seed oil, 30 g (20% by weight of the reaction mixture) of sulfur, 30 g (20% by weight of the reaction mixture) TGM-3, 45,1 g (30% by weight of the reaction mixture) dimethylphenylcarbinol syrup, 0.5 g (0.3 percent by weight of the reaction mixture) of cyclohexanone peroxide and 0.6 g (0.4% by weight of the reaction mixture) altaxe get 256,2 g kauchukopodobnoe soft product with d420=1,03, the acetone extract is 12%free sulfur is 0.5%.

The term "by weight of the reaction mixture, with respect to which the calculation of all other components, must be understood as a base of grape oil consisting of a mixture of unsaturated and saturated fatty acids with a high content of linoleic acid.

For vulcanizates based on polychloroprene (Nairit DP), physico-mechanical properties are presented in table 1 used the standard recipe mixture, parts by weight:

Nairit DP100
Magnesium oxide4,0
Zinc oxide5,0
Sulfur1,0
Thiuram1,0
D is fenilaniny 1,0

Table 1

Physico-mechanical properties of vulcanizates based on Nairit DP
IndicatorsNairit DP TU:-01-1319, ISMNairit DP with faction
Conditional tensile strength, MPa2325.3
Elongation %800970
Residual elongation, %2015.8
The beginning of podocarpaceae, minutes1542
Frost, °-22-22-70 to -80

Sources of information

1. THE 6-01-528-77.

2. OST 6-01-34-78.

3. THE 38.106257-79.

4. A.S. 1298214.

5. Rstrainer, Weaponchange "Modification of rubbers by oligoadenylate".

6. THE 6-01-1103-77.

7. THE 6-01-1056-76.

8. THE 6-01-912-74.

9. Ctenus "Plasticizers".

10. Rssparser "Plasticizers for polymers".

11. Doordashan "Synthetic adhesives".

1. The method of producing factice by heating vegetable oils and sulfur modifier in the presence of a catalyst, characterized in that the quality of vegetable oil use grape seed oil is obtained from grape seeds containing 68,3-75,4% by weight of linoleic acid, and as a modifier triethyleneglycol ether dimethacrylate acid (TGM-3), in the amount of 10-20% by weight of the reaction mixture and the process is conducted in the presence of initiator, which allows you to use factis at the same time as a cold-resistant plasticizer and softener to obtain resistant chloroprene rubber.

2. The method according to claim 1, wherein the modifier further comprises dellroy ether of trimethylolpropane or dimethylphenylcarbinol, or syrup.

3. The method according to claim 2, characterized in that use dellroy ether of trimethylolpropane in the amount of 10-30% by weight of the reaction mixture.

4. The method according to claim 2, characterized in that use dimethylphenylcarbinol or syrup in the amount of 10-30% by weight of the reaction mixture.



 

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SUBSTANCE: polymer composition suitable for use in various national economy branches, in particular in cable industry, is constituted by, weight parts: chloroprene rubber or its combination with butadiene-nitrile rubber, 100; zinc oxide as vulcanization agent, 1-5; vulcanization accelerator selected from group: sulfur, thiuram, diphenylguanidine, Captax, or a mixture thereof, 1.0-3.25; vulcanization activator selected from group: magnesium oxide and stearic acid, 3.5-10.0; stabilizer: acetonanyl, diaphene FP, naphtam-2, 2-3; dibutyl phthalate as plasticizer, 10-20; paraffin as antiozonant, 2-8; fillers: carbon black 47-52 and kaolin 5-22; polybutadiene as modifier, 0.1-10.0; and, additionally, alumina trihydrate, 50-60.

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4 tbl, 1 ex

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2 tbl

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3 tbl, 1 ex

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The rubber mixture // 2232169
The invention relates to the rubber industry, in particular the production of rubber compounds used for the manufacture of products for various purposes, such as plates for acoustic coatings

FIELD: rubber industry.

SUBSTANCE: factice is obtained by heating vegetable oil with sulfur and modifier in presence of catalyst and initiator, said vegetable oil being, in particular, grape oil produced from grape grains and containing 68.3-75.4% linolic acid, and said modifier being dimethacrylic acid triethylene glycol ester in amount 10-20% of the weight of reaction mixture. Modifier may further contain trimethylolpropane or dimethylvinylethynylcarbinol diallyl ether or syrup thereof.

EFFECT: improved quality and stability of factice, which enables utilization thereof as frost-resistant plasticizer and softener in manufacture of frost-resistant chloroprene rubbers having high physico-mechanical and technological characteristics.

4 cl, 1 tbl, 4 ex

FIELD: rubber industry, in particular chloroprene resin-based adhesive compositions.

SUBSTANCE: claimed composition contains nairitic adhesive, epoxy dianic resin and still waste from aniline production. Composition of present invention is useful in adhesion of vulcanized rubber surfaces or rubber and metal surfaces.

EFFECT: composition of improved adhesion strength.

3 tbl, 1 ex

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FIELD: gluing compositions.

SUBSTANCE: invention relates to chloroprene rubber-base gluing compositions and can be used in rubber industry in gluing vulcanized rubber. The gluing composition comprises polychloroprene rubber neoprene AS, butylphenolformaldehyde resin 101 K, water, zinc oxide, magnesium oxide and organic solvent representing a mixture of ethyl acetate and nefras. The composition comprises methacrylic acid glycide etser as a modifying agent and vat waste in manufacturing aniline with the aniline content 15-18 mas. p. p. The gluing composition provides enhanced gluing strength.

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2 tbl

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FIELD: glues, rubber industry.

SUBSTANCE: invention relates to chloroprene rubber-base gluing composition. The gluing composition comprises polychloroprene rubber Nairit DP, butylphenolformaldehyde resin 101K, water, zinc oxide, magnesium oxide, organic solvent representing a mixture of ethyl acetate and nefras and comprises methacrylic acid glycide ester as a modifying agent and vat waste in aniline manufacturing with the content of aniline 15-18 mas. p. p. Proposed gluing composition provides the enhanced strength in gluing. Invention can be used in rubber industry in gluing vulcanized rubber.

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2 tbl

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SUBSTANCE: chloroprene rubber of NYRIT KPHT grade is subjected to steam heating before mixing with zinc oxide and magnesium oxide; steam heating is continued for an hour at temperature of 100°C, after which mix is subjected to rolling till rubber sheet is formed. Then, diphenyl guanidine is introduced and mix is rolled, after which modifying agent is introduced; modifying agent is obtained preliminarily through interaction of epoxy diane resin and stillage waste of aniline process at mass ratio of 2:1 and content of aniline of 15-18 parts by mass. Rubber mix is used for making adhesive composition with the use of solvent and resin 101K. This adhesive composition enhanced quality of attachment of rubber to rubber and to metal.

EFFECT: utilization of petrochemical process waste - aniline.

4 tbl, 1 ex

Polymer composition // 2291884

FIELD: polymer materials.

SUBSTANCE: polymer composition suitable for use in various national economy branches, in particular in cable industry, is constituted by, weight parts: chloroprene rubber or its combination with butadiene-nitrile rubber, 100; zinc oxide as vulcanization agent, 1-5; vulcanization accelerator selected from group: sulfur, thiuram, diphenylguanidine, Captax, or a mixture thereof, 1.0-3.25; vulcanization activator selected from group: magnesium oxide and stearic acid, 3.5-10.0; stabilizer: acetonanyl, diaphene FP, naphtam-2, 2-3; dibutyl phthalate as plasticizer, 10-20; paraffin as antiozonant, 2-8; fillers: carbon black 47-52 and kaolin 5-22; polybutadiene as modifier, 0.1-10.0; and, additionally, alumina trihydrate, 50-60.

EFFECT: enabled preparation of composition showing resistance to flame propagation, low fume evolution, high frost and oil resistance with physico-mechanical characteristics preserved.

2 cl, 3 tbl

FIELD: rubber industry.

SUBSTANCE: factice is obtained by heating vegetable oil with sulfur and modifier in presence of catalyst and initiator, said vegetable oil being, in particular, grape oil produced from grape grains and containing 68.3-75.4% linolic acid, and said modifier being dimethacrylic acid triethylene glycol ester in amount 10-20% of the weight of reaction mixture. Modifier may further contain trimethylolpropane or dimethylvinylethynylcarbinol diallyl ether or syrup thereof.

EFFECT: improved quality and stability of factice, which enables utilization thereof as frost-resistant plasticizer and softener in manufacture of frost-resistant chloroprene rubbers having high physico-mechanical and technological characteristics.

4 cl, 1 tbl, 4 ex

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