SU794034A1 - Polyvinyl chloride plastisol - Google Patents

Description

one

The invention relates to povivinyl chloride plastisol composite, used in the preparation of a variety of elastic coatings and products.

In order to be able to transport plastisols and process them in batches at the place of use, all properties of plastisols, especially viscosity, must be stable over time.

The introduction of polyvinyl chloride plastisol to improve viscosity stability of ethylene glycol monoethyl ether 07 is known.

Introduction to polyvinyl chloride plastisols for thickening highly dispersed silicon dioxide is known. Aerosil f 2J and 5L.

The closest technical solution to the present invention is polyvinyl chloride plastisol containing polyvinyl chloride (PVC), plasticizer — dioctyl phthalate, epoxy stabilizer, filler, and aerosil 4.

However, the stability of the well-known plastizol is insufficient.

The aim of the invention is to increase the viscosity stability of the plastizol while maintaining the physicomechanical properties.

To achieve this goal, it is proposed to introduce polyvinylchloride plastisol containing a plasticizer, stabilizer and aerosil, to add aerosil modified with ethylene glycol or vinylmethyldichlorosilane, in the following ratio of composition components, parts by weight:

Polyvinyl 100 Stabilizer1 7

Plasticizer 60-100 Lerosil modified with diethylene glycol or vinylmethyldichlorosilane 0.5-20

The introduction of aerosil modified with diethylene glycol (technical name ADEG) and vinylmethyldichlorosilane (vinyl aerosil) increases the viscosity stability of plastisol, which greatly facilitates its use. At the same time, the physicomechanical properties of the coatings do not deteriorate.

Example 1. Mixed in the mixer 0.5 weight.h. diethylene glycol Aerosil (ADEG) and 0.5 weight.h. plasticizer dioctyl phthalate (DOP), fray on krasoterke. The resulting paste 99.5 weight.h, DOP and 5 weight.h. stabilizer - epoxidized soybean oil (ESM) and 100 weight, h. PVC

mix on a planetary mixer, then grind the plastisol on the paint mill and vacuum it with stirring. Properties plastisol and coatings are shown in the table.

Notes

Example 2 A plastisol is prepared as in Example 1, but for the preparation of a paste, 2 weights are taken, h. ADEG and 2 weight, h, DOP, and for the preparation of plastisol 98 weight, h, DOP.

Example 3. Plastisol is prepared according to Example 1, but for the preparation of the paste, 10 parts by weight, adEG and 10 weight, h, DOP are taken, and for preparation of the paste, 90 parts by weight, DOP.

Example 4. Take 0.15 VE.H, mixtures of DG-100 and after mixing it with 0.45 weight, h. DOP fray on kraskoterke. 99.55 weight parts DO.F, 35 weight, h.

the ratio of viscosity after 30 days to the initial viscosity plastisol;

the ratio of viscosity after 60 days to the initial viscosity plastisol;

destructive stress during stretching;

elongation at break.

white spirit, 35 weight.h. 80% solution / -prymethacrylate-bis- (pentaerite) of pinch in toluene, 3 weight.h, cumene hydroperoxide, 100 weight.h. paste-forming polyvinyl chloride, 15 weight, h. ADEG, 85 weight.h. kaolin and 0.5 weight, h, graphite is mixed in a planetary mixer until a homogeneous mass is obtained. After production, the plastisol is filtered through a brass mesh.

Claims (4)

Example 5. Plastisol is prepared according to Example 4, but for preparation, 20 parts by weight are taken. ADEG. Example 6. Mixed in the mixer 0.5 weight, h. vinyl erosil and 0.5 weight.h. plasticizer - dioctyl phthalate, fray on krasoterke. The resulting paste 99.5 weight.h, DOP., 5 weight.h. stabilizer - epoxy, g soybean oil (ESM) and 100 weight.h. The PVC is mixed on a planetary mixer, then the plate is rubbed on the paint mill and evacuated. The properties of plastisol and coatings are shown in the table. Example 7. Get plastisol according to example 6, but for cooking pasta take 4 weight.h. vinyl erosil and 4 weight.h. DOP, and for the preparation of plastisol 96 parts by weight Dof. Example 8. Plastiso is prepared according to Example 6, but for the preparation of the paste, 10 parts by weight are taken. vinyl aerosil and 10 weight.h. DOP, and for the preparation of plastisol, 90 parts by weight Dof. Examples (for comparison. Plastisol is prepared according to example 2, but take unmodified aerosil in an amount of 2 and 10 parts by weight. The properties of the plastisol are presented in the table. As can be seen from the data given in examples 1-5, the stability of the viscosity of plastisols using Aerosil, modified with diethylene glycol in the amount of 0.5-20 parts by weight per 100 parts by weight of PVC, increases, while thermal stability and mechanical properties do not deteriorate. Use in the plastisol aerosil modified with diethylene glycol in an amount less than 0.5 weight. parts per 100 parts of PVC, and b more than 20 parts by weight per 100 parts by weight of PVC is impractical because in the first case the plastisol has a low viscosity and practically does not differ in properties from unfilled, and in the second case the viscosity stability is lower than in the case of aerosil , i.e., there is no stabilization effect. As can be seen from the data given in examples 6-8, the viscosity stability of plastisols using vinyl eros in the amount of 0.5-10 parts by weight per 100 weight parts PVC is povivayets. At the same time, the thermal stability and mechanical properties are not degraded. With the introduction of plastisol vinyl eros in the amount of less than 0.5 weight.h per 100 weight.h. PVC does not exhibit a thixotropic effect, and the use of vinyleerosil in quantities exceeding 10 parts by weight is impractical, since the aging rate increases. Claims of Polyvinyl Chloride Plastisol / Containing Polyvinyl Chloride, Plasticizer, Stabilizer, and Aerosil, characterized in that, in order to increase the stability of the viscosity of the Plastisol while retaining its physicomechanical properties, Plastisol contains Aerosil, modified with diethylene glycol or vinylmetal and chloride and chloro-chloride and chloro-chloro and chloro-chlorine. the following ratio of components, wt.h,: Polyvinyl chloride 100 Plasticizer 60-100 Stabilizer 1-7 Aerosil modified with diethylene glycol or vinylmethyldichlorosilane 0.5-20 Sources of information, n rintye in the examination 1.Patent Czechoslovakia 128331, cl. 39 L 22/06, published 1966. 2. Australian Patent No. 444444, cell 47.7-54, published 1974. 3. The UK patent number 1320982, cl. C 3 P, published 1973. 4. US patent 3,796,681, cl. 260-31.8 R, publ. 1974.