SU551882A1 - Factice-like composition - Google Patents

Description

The invention relates to fact-like compositions containing synthetic rubber, a plasticizer, sulfur, and other ingredients of a vulcanizing system, and may find wide application in the production of consumer goods and rubber products.

Known compositions such as faktis, prepared on the basis of castor,

rapeseed and other vegetable oils, fatty oils, mixtures of liquid polybutadiene and fatty oils, in which the crosslinking agent is sulfur or semi-chloride sulfur.

It is also known fact-like. a composition consisting of liquid rubbers obtained by copolymerizing butadiene with divinylbenzene or monovinyl compounds, containing nitrile, aminoether or ester groups, plasticizer oil PN-b, sulfur and other ingredients of the vulcanizing system. However, such compositions cannot be used for the manufacture of a wide range of rubber products, especially products for domestic consumption from colored and light rubber, due to the dark color of the sharp unpleasant odor. In addition, the composition of the composition requires about 2 hours. consists in obtaining a light, odorless and suitable for obtaining an eraser of factis. To achieve this goal predlagaest faktisopodobna composition comprising as a base a low molecular weight 1,2-polybutadiene CKBCHj brand plasticizer selected from the group consisting: petrolatum, stabilplast, naphthol, and their mixtures, an accelerator selected from the group comprising thiuram kaptaks, dithiodimorpholine, ethylphenyl Zinc dithiocarbamate, mixtures thereof, with the following content of components, wt.%: 1,2-Polybutadiene100 Plasticizer 120-135 Accelerator 1.0-3.5 Sulfur.5-10 The composition may additionally contain as an activator of zinc oxide in an amount of 0, w / w. The starting low molecular weight 1,2 polybutadiene of the SKBSN brand is obtained by polymerizing butadiene in the presence of n-butyl lithium and adding N-methylated polyethylene polyamines. Vaseline oil (T brand), stabilized plastic-b2 can be used as a plasticizer (the distillate obtained from the distillate gas from the distillate; by selective purification), naphthol (softener, obtained from high-boiling 370-30cj fractions of anastasia oil, purified by phenol) or their mixture. Thiuram (tetramethylthiuramdi sulfide), captax (1,2-mercaptobenz thiazole), NjN-dithiodimorpholine (sulphane r), Pzkstra H (ethylphenyldithiocarbamate of zinc) can be used as an accelerator. The proposed fact-like composition is prepared as follows. In the capacity load 100 wt. pre-heated to 90 ° C rubber SKBSN and 100-111 wt.% plasticizer, after which the mixture is heated with constant stirring to 70 C. Then paste is introduced into the container. consisting of 20–35 masd plasticizer, 1.0–3.5 May L accelerator, 5–10 wt. sulfur and 0.3-3.0 wt. activator, and the mixture is heated for 60-90 minutes to 120-130 s, at the same time thickening of the mass occurs. Heating is stopped and the mass is left to mature for 10-20 minutes. The resulting fact-like composition is discharged from the container, crushed and cooled to room temperature. The product has a light color and no unpleasant smell. Example 1 In a mixture of 100 masD of SKBSN rubber pre-heated to 90 ° C and 108 May.% Petroleum jelly, with a constant stirring, a paste consisting of 9.0 wt.% Sulfur, 1.0 masD. Of tyuram, 2, May 5 Zinc oxide and 22.0 May,% petroleum jelly. The mass is heated to 120-130 C for 60-90 minutes. At the same time, it is running. The thickened mass is left in the boiler for aging for 10-20 minutes. The resulting product is cooled to room temperature. Examples 2 and 3. In a mixture of 100 masD of SKBSN rubber preheated to 90C to 100 weight parts. Stabilplast-62 (Example 2) - or 108 May,% naphthol (Example 3) are added to the melting point shown in Example 1, Follow-up preparation steps of the composition are also carried out in accordance with Example 1. Example 4, In a mixture of 100 wt. pre-heated to 90 ° G rubber SKBSN and 111 wt. petrolatum oil is introduced with continuous mixing and a paste consisting of 6.0 mass media of sulfur, wt. captax, 0.5 wt. Pextra H, 2.0mae.% Sulfazan R and 22.0 May. petroleum jelly maela. Subsequent preparation of the composition is carried out in accordance with Example 1. Example 5. A mixture of 100 wt. preheated to 90s

551882

SKBSN rubber and 111 masDa stabilplast-b2 are injected at 70 ° C and under constant stirring a paste consisting of 6.0 May L. sulfur, 1.0 wt. captak-, sa, 0.5 wt. Pextra H, 2, Omasd Sulfazane R and 22.0 wt.% Stabilplast-b2. Subsequent preparation of the composition is carried out in accordance with Example 1.10.

The fact-like compositions obtained in Examples 1-5 are not dark in color or have an unpleasant odor.

suitable for the manufacture of consumer goods and rubber products.

Preliminary tests in the laboratory have shown that the proposed fact-like composition meets the requirements and can completely replace the previously used Factis based on vegetable oils and various synthetic rubbers.

Claims (3)

(59) 1. An ACTUALLY COMPOSITION containing synthetic rubber, plasticizer, accelerator and sulfur, characterized in that, in order to obtain a light, odorless and suitable for receiving factis eraser, the composition contains low molecular weight 1,2-polybutadiene as a base , a plasticizer selected from the group: liquid paraffin, stableplast, naphthol, mixtures thereof, an accelerator selected from the group: thiuram, captax, dithiodimorpholine, zinc ethyl phenyl dithiocarbamate, mixtures thereof with the following content, wt.%: 1,2-Polybutadiene Plasticizer Accelerator Sulfur 2. The composition according to claim 1, characterized in that it contains an activator — zinc oxide in an amount of 0.3-3.0 wt.%. component 100 120-135 1.0-3.5 5.0-10.0 about l and SU „„ 551882