RU1834895C - Hydraulic phabizator of chalk for polyvinylchloride plastics - Google Patents

Abstract

SUMMARY OF THE INVENTION: May 30-70. % distilled acids from cotton stock with the number of carbon atoms in the molecule 16-18, containing May 40-60. % saturated and 60-40 may. % unsaturated aliphatic acids, May 29.90-69.99. % paraffin hydrocarbon fractions and ionol, the rest is placed in a glass, heated to 70-80 ° C. The water repellent has a melting point 36-49 ° C with reduced stickiness and viscosity. 1 s.p. fl, 3 tab.

Description

The invention relates to the production of hydrophobic chalk, in particular to a hydrophobizing agent, which makes it possible to obtain chalk, used, for example, as fillers for articles made of polyvinyl chloride.

The invention provides high processability by lowering the melting point of the water repellent and lowering the viscosity of the plastisol composition, the latter favors an increase in the degree of filling of the plastisol composition with hydrophobic chalk.

The essence of the invention lies in the fact that the hydrophobizing agent, including aliphatic acids, paraffin hydrocarbons of the C20-C40 fraction and ionol, contains distilled acids from cotton soap with the number of carbon atoms in the molecule 16-18 in the following ratio of components, as aliphatic acids. %:

Distilled Acids from Cotton Soapstock 30-70

Paraffin Carbohydrates 29.90-69.99

Ionol

moreover, distilled acids from cotton constipation include saturated and unsaturated aliphatic acids at their next content, May. %: Saturated aliphatic acids 40-60

Unsaturated Aliphatic Acids 60-40

A distinctive feature of the water repellent is the use of distilled acids from cotton soap stock in the composition with the number of carbon atoms in the molecule 16-18. which contain saturated and unsaturated aliphatic C

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with

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with

acids in the following ratios, May. %:

Saturated Fatty Acids 40-60

Unsaturated fatty acids 60-40 The technical result of the chalk hydrophobisizer for the polyvinyl chloride plastisols according to the invention is as follows: the melting point of the chalk hydrophobizer is reduced by an average of 10-16 ° C, which greatly facilitates the hydrophobization process; hydrophobic chalk with a new hydrophobicizer has less stickiness compared to the hydrophobic chalk of the prototype, which is essential and important for its transportation, dosing and bunker storage, as it reduces working time for non-production operations and equipment maintenance;

- The viscosity of polyvinyl chloride plastisols is reduced to 75%. this allows introducing into their composition 50-75 masses, parts of hydrophobized chalk as a filler, which leads to a reduction in the consumption of scarce and expensive grades of polyvinyl chloride. At the same time, the consumer properties of the target product are not reduced.

Distilled acids from cotton soap stock, in particular a mixture of saturated and unsaturated fatty acids of cotton soap stock in accordance with TU 38.507-53-098-90, are used as the active component of the water repellent.

Distilled acids of cotton stock are characterized by the following characteristics:

Iodine number 90-110 mg 12/100 g

Acid number 180-190 mg KOH / g

Melting point 20-30 ° C

Iodometric color

scale .200-400

As a component that enhances the hydrophobic effect and reduces the possibility of spontaneous combustion of bags with hydrophobic chalk, paraffin hydrocarbons are used in accordance with TU 38.1011085-86.

Ionol is used as a component that prevents the autooxidation of hydrophobic chalk during storage and transportation, especially in hot months.

The water repellent is a yellow solid. Melting point, density 0.70-0.90 g / cm3.

The water repellent is prepared by direct mixing of the components in a predetermined ratio at a temperature of 70-80 ° C.

Gidrofobieatsiya chalk brand MMS-2 (Shebekinsky chalk plant); GOST

12085-73, humidity 0.2%, is carried out in a laboratory stirrer with a speed of 300 rpm at a temperature. 100-110 ° C for 30 minutes

The degree of hydrophobicity of the chalk is determined by the method of the life time of a drop of water (HLC) on the surface of the chalk (TU 21-RSFSR-143-76).

The viscosity measurement of polyvinyl chloride compositions with hydrophobic chalk over time is carried out on a Brookfeld viscometer at a shear rate of 4.

From 20 to 75 parts by weight of 5 parts per 100 parts by weight of polyvinyl chloride are added to the formulation of the polyvinyl chloride composition.

The composition is prepared according to the following formulation, May. %:

Polyvinyl chloride grade 0 EP6602-A100 May. hours

Hydrophobic chalk May 20.50.75. h. Dioctylphthalate May 54. hours

The melting point is determined according to GOST 4255.

5 Example 1. 1.26 g (May 30%) of cotton soap stock, 2.9 g (69.99 May%) of the Cao-Sad fraction and 0.00042 g (0.01 May.%) Of ionol are placed into a glass. The mixture was heated to 70-80 ° C while stirring with 0 glass rod for 10 minutes.

The melting point of the hydrophobizer is determined, which is 47 ° C (Table 1).

Hydrophobization is carried out as follows 5.

600 g of chalk of MMS-2 grade are placed in a laboratory stirrer with a rotation speed of 300 rpm and at a temperature of 110 ° C, they are mixed with 4.2 g (0.7% by weight of 0 chalk) of the prepared water repellent agent for 30 minutes.

The obtained hydrophobized chalk is tested in the composition of polyvinylchloride plastisols according to the following procedure: 54 g of dioctyl phthalate and 20 g (20 Mae.) Chalk treated with the proposed water repellent are added to 100 5 g of polyvinyl chloride of grade EP 6602-C. The mixture was stirred in a Werner Marhls 0 AQ brand vacuum mixer at a rotational speed of 300 rpm for 10 minutes. After stirring, the mixture was triturated in a paint grater with a gap of 0.3 mm. Then, viscosity 5 of the resulting plastisol mixture was measured on a Brookfeld viscometer at a shear rate of -.

It has been experimentally established that the best viscosity results (Table 2, Example 1) of the plastisol composition are obtained with a 50:50 content of saturated and unsaturated fatty acids, respectively. Viscosity of a plastisol composition when filled with hydrophobic chalk treated with the hydrophobizator of the invention at a content of May 20. hours on May 100. including PVC, 8000 cps; at may 50. h. 8000 SDR; at may 75. h. 16000 cts; after 7 days: at May 20. h. in viscosity 68800 spz. May 50th. hours in viscosity 118400 SPZ. May 75th. h. in viscosity 164800 SPZ.

Since the preparation of the compositions is identical to that described by Example 1 and differs only in the ratio of components and test results, the remaining examples, including the prototype, are presented in Table. 1 and 2.

The test results for the degree of hydrophobicity of chalk MMS-2, hydrophobized with a hydrophobiseter according to the invention with a hydrophobicity content of 0.7% by weight of chalk and the melting point of the hydrophobizator, are presented in Table. 1.

The test results for the viscosity of the plastisol composition depending on the composition of the water repellent are shown in table. 2.

The data table. 1 show that the degree of hydrophobicity of chalk hydrophobizator is at the level of the prototype and even slightly higher. With regard to its melting point, the average melting temperature (examples 1-3) is tO ° C lower than that of the water repellent prototype, and the melting temperature at the optimum ratio of components (example 2) is "16 ° C lower."

The amount of ionol in the composition of the water repellent, as well as that of the prototype, amounted to 0.01-0.10 may. %, which provides a sufficient antioxidant effect.

The use of ionol in the composition of the water repellent in an amount of 0.1 may. % impractical because it is an expensive product and an increase in its quantity does not lead to a significant change in antioxidant properties.

The use of ionol in the composition of the hydrophobizing agent chalk 0.01 May. % does not provide the necessary antioxidant effect.

5 Examples 4 and 5 show the transcendental values of the components. Despite the fact that the melting temperature of these modifiers is lower than that of the prototype, but the degree of hydrophobization is low, which 0 excludes their use.

According to the table. 2, the average viscosity values for the plastisol composition are significantly lower than for the prototype. For the sake of clarity, the calculated data on the 5th decrease in viscosity at various chalk contents in the plastisol composition obtained using the known water repellent and claimed are presented.

The highest viscosity values of 0 plastisol compositions are observed at a hydrophobic chalk content of May 50 and 75. parts.

The formula of the invention 1. Chalk waterproofing agent for polyvinyl-5 chloride plastisols, including aliphatic acids, paraffin hydrocarbons fraction C2cg Sod and ionol, characterized in that as aliphatic acids it contains distilled acids from cotton sap with the number of carbon atoms in the molecule 16-18 in the following ratio of components, May. %:

Distilled Acids 5 from Cotton Soap Stock 30-70

Paraffin hydrocarbons fractions C20-C4029.90-69.99

Ionol The rest.

2 .. Water repellent chalk pop. 1, from l and 0 ts ayushch and with the fact that distilled acids from cotton soap stock include saturated and unsaturated aliphatic acids at their next content, May. %: 5 Saturated aliphatic

acids 40-60

Unsaturated Aliphatic Acids 60-40

Table 1

Cotton soap stocks a mixture of saturated and unsaturated fatty acids (40:60 respectively) -30

paraffin hydrocarbons

H C ionol

- 69.39 - 0.01

Acids of cotton soap stock;, a mixture of saturated and non-hyacinth fatty acids 160: 40, respectively) - 70

paraffin hydrocarbons - 29.90 monol - O,}

Cotton soap stock - a mixture of saturated and unsaturated fatty acids (50:50, respectively) - 50

.

.

.

paraffin hydrocarbons V-CVP. 49.95 ionol - 0.05

Cotton soap stocks - a mixture of saturated and unsaturated peaceful acids (30:70 respectively) -25

paraffin hydrocarbons

, 99.; ..

ionol 0.01

Acids of cotton soap stock - a mixture of saturated and unsaturated fatty acids (70:30 respectively), 80

paraffinic hydrocarbons i,;, 19.9

ionol - 0.1

VAT residues of synthetic fatty acids - 20.0-80.0

paraffin hydrocarbons fractions - 19.99-79.90

monoalkylpheno, pgoxydiphenol or ionol - OjOI-0.10. prototype

35

47

22

38

47

55

49

28

36

fifteen

I AM

table 2

Table 3