SU1581722A1 - Pubber mix composition - Google Patents

Abstract

The invention relates to the rubber industry and concerns the development of a rubber compounding with improved confection properties, which can be used in the tire and rubber industry. The invention allows to increase the coking and adhesive properties of a rubber mixture based on polyisoprene rubber, including parts by weight. (per 100 parts by weight of rubber): sulfur 1.2-3.0

vulcanization accelerator 1.6-2.0

zinc oxide 3.0-5.0

stearic acid 1.5-2.0, technical carbon 30.0-50.0, as a modifying additive - a product of co-condensation of acenfithene with phenol and acetaldehyde at their mass ratio of 1: 2: 2-4 or a vat residue of the absorption regeneration, respectively oils with phenol and acetaldehyde at their mass ratio of 1: 2: 1-1.5, having a dropping point of 70-120 ° C 0.5-2.9, in combination with rosin 0.1-2.5. 5 tab.

Description

The invention relates to the rubber industry and concerns the development of a rubber compound formulation based on isoprene rubber, with improved confection properties, which can be used in the tire and rubber industry.

The purpose of the invention is to improve the cohesive and adhesive properties of the rubber compound.

In the formulation of the rubber mixture, the products of joint condensation of acenaphthene with phenol and acetaldehyde are used at a ratio of 1: 2; 2-4 (products A-1, A-2, A-3) or vat

regeneration residue absorption oil with phenol and acetaldehyde at a ratio of 1: 2: 1-1,5 (products IJ-1, ir-2).

The bottoms obtained during the regeneration of the absorption oil in the coke-chemical production are a complex mixture of polycyclic aromatic compounds, polymers of unsaturated compounds: a small amount of coal tar and have a characteristic: a density of 1, 1 3 g / cm, fractional composition: boils up to 170 ° C 0.5 wt.%, up to 270 ° C 19 wt.%; up to 370 ° C 80.5 wt.%.

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These products are prepared in the following way.

The product, In a melt of a mixture of ace naphthene and phenol, taken in a ratio of 1: 2, in the presence of 0.07 mol of concentrated hydrochloric acid and 0.8 mol of formic acid per

Acetaldehyde in a ratio of 1 mol per 1 mol of phenol is introduced at 1 mol of phenol at 40-50 ° C. Synthesis is carried out at 80t5 ° C with vigorous stirring for 2.5 hours. The resulting mass is washed and dried,

Product A-2. The synthesis is carried out similarly to the product A-1, but acetal dehyd is taken in a ratio of 1.5 mol per 1 mol of phenol, and the reaction time is 2 hours.

Product A-3. The synthesis is carried out similarly to the product A-1, but acetaldehyde is taken in a ratio of 2 mol per 1 mol of phenol, the reaction time is 1.5 hours.

The preparation of condensation products of the bottom residue of the regeneration of the absorption of coal oil with phenol and acetaldehyde was carried out as follows.

Product II-1 "Bottom residue of regeneration of the absorption oil, phenol and acetaldehyde, taken in the ratio 1: 2: 1, in the presence of

2 wt% hydrochloric acid was heated at 90t 5 ° С for 10 hours with vigorous stirring. The mass is cooled with water and sugat.

Product II-2. The bottoms of the recovery of the absorption oil, phenol and acetaldehyde, taken in a weight ratio of 1: 2: 1.5, in the presence of 2 wt.% Of concentrated hydrochloric acid were heated at 901 for 8 hours with vigorous stirring.

Characteristics of the synthesized products are presented in table. one .

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Rubber mixture, the composition of which is presented in table. 2 and 4, are prepared in a laboratory rubber mixer in accordance with generally accepted modes and are vulcanized in an electric press for 5 minutes.

Claims (1)

The properties of rubber compounds and rubber are presented in table. 3 and 5, Formula invented by HJ ten five 0 five five 0 45 The rubber mixture based on polyisoprene rubber, including sulfur, a vulcanization accelerator, zinc oxide, stearic acid, carbon black and a modifying additive, is characterized in that, in order to improve the cohesive and adhesive properties of the mixture, it contains a joint product condensation of acenaphthene with phenol and acetaldehyde at their mass ratio of 1: 2: (2-4), respectively, or of the bottoms of the recovery of the absorption oil with phenol and acetaldehyde at their mass ratio ootvetstvenno, 1: 2: (1-1.5) having a drop point of 70-120 ° C in combination with rosin, at the following component ratio mixture mae.ch: Poliizoprepovy rubber 1DO Sulfur 2 - 3.0 Vulcanization accelerator1, 6 - 2.0. Zinc oxide 3.0 - 5.0 Stearic acid1.5 - 2.0 Technical carbon30 - 50 The specified product of the joint condensation of phenol with acetaldehyde and acenaphthene or phenol with acetaldehyde and vat residual absorption of the absorption oils 0,5 - 2,9 Rosin O, 1 - 2,5. T a b p and c a table 2 Continued table. 2 ( Ingredients Ingredients Content, May. H., Composed Known-Proposed nyyg-.gt 1I 234567 Rosin-0,10 „10,11,52,5 1,5 1,5 ACh2.9 ---- 1.5 A-2.2,91,5 A-3-2,91,50,5 ZMTGFA - product of copolymerization of piperylene and 3-methyl-1,2,3,6-tetrahydropthalic anhydride T a b, l and c a 3 IndicatorExample Known-Proposed ny - ijjj Tensile strength, MPa, 6 1.8 2.1 1.8 2.0 1.7 1.9 2.2 Relative use,% 780 810 790 805 778 980 800 780 Claying ability raw, kgf / 1,5cmij1,9 290 1.8 2,11,8 2,0 2,1 Table 4 The content of ingredients, wt., As part of ingredients Compare-Proposed -telny -...-- g.: 8 9 10 11 12 13 14 15 Rubber PC100 Sulfur2,4 Sulfen mid Ts1,1 Altax0.2 Zinc Oxide5.0 Stearin t acid .2,0 Carbon black 100100100100100100100100 3.03.03.03.03.03.03.03.03.03.03 2,02,02,02,02,02,02,02,0 5.05,05,05,05,05,05,05,0 1, 51, 5 1, 51,51,51,5, 51,5 9150172210 Continuation of table 4 The name. Content of ingredients, mac.ch., in structure  ingredients Compare- Suggested telny.-g; g .-- yy 89101112 13 14 15 P-234 50ZO 30 Td 3 0 303030 SsG Neozone D1.0 --- 3-MTHPA2.0 ------- Rosin-0, 1 0.1 0.1 0.1 1.5 1.5 2.5 1.5 2.5 A-1-2.9 ----- 1.5 0.5 A-2--2,9 - ---- P-1 2, 9 ----- P-2--2, 9 1.5 0.5 Table 5 IndicatorExample Compare-Proposed telny - tchggt 8 9 10 111213 (1415 Durability at .... snout, MPa 1.6 2.1 2.2 2.5 2.4 2.4 2.0 2.0 2.0 1.9 Relative % extension, 780845 830 790 863 870 945 930 953 Adhesive strength raw, kgf / 2.5 cm .1.72.4 2.6 3.2 3.4 3.2 3.5 3.8 4.1 Compiled by E. Kazakova Editor M. Nedoluzhenko Tehred M. Khodanych Proofreader S. Shevkun Order 2066 Circulation 438 Subscription VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, F-35 Raushsk nab. 4/5 Production and publishing plant Patent, Uzhgorod, st. Gagarin, 101