SU840078A1 - Floor enamel - Google Patents

Description

one

FIELD OF THE INVENTION The invention relates to a paint and varnish industry, namely to the production of enamel intended for painting pre-prepared floors or other wooden products.

Known enamel containing phenol-formaldehyde resin is a resin - a condensation product of secondary alkyl phenols with formaldehyde (101 M), vegetable oils, pigments, desiccant, organic solvent GI

However, enamel has insufficient resistance to detergents.

The closest technical solution to the present invention is enamel for floors containing phenol-formaldehyde resin, which is a condensation product of primary alkylphenols with formaldehyde in ammonia, vegetable oils, pigments, fillers, desiccant, organic solvent 2.

However, enamel is not resistant to abrasion and detergents.

The purpose of the invention is to increase the bone enamel to abrasion and detergent.

The goal is achieved by this enamel for floors, including phenol-formaldehyde resin, vegetable oils, pigments, filler, desiccant, organic solvent, it contains phenol-formaldehyde resin with the number of methylol groups of 7-12% as a phenol-formaldehyde resin with the following ratio of components, wt. %;

Phenol-Formaldehyde resin with the number of methyl groups of 7-12% 20.1-20.5 Vegetable oils18.4-18.8

Pigments11.0-16.0

Filler 9.0-14.0

Dryer6.8-7.2

Organic solvent, the Rest.

Phenol-formaldehyde resin is a condensation product of para-tertiary butylphenol with formaldehyde in an alkaline medium (TU 610-1220-77) ..

Enamel is prepared as follows. Phenol11) Ormaldehyde resin with the number of methyl groups of 7-12%, the mixture of vegetable oils is loaded into a reactor equipped with a stirrer and raked with stirring up to 160-180 s. Upon reaching the viscosity of the recation mass up to 46-57 s according to VZ-4 (60% solution

in xylene, the reaction is terminated. Refrigerated modified resin., Pigments, filler, desiccant, white spirits are loaded into a mixer equipped with a stirrer and agitated for 0.5-2 hours. The resulting pigment paste is fed to a dispersant. Dispersing is carried out to the degree of grinding 45 μm according to Klin.

The finished enamel is put on the type of moisture and non-volatile content.

Table 1 shows the formulation of the known and proposed enamel.

In tab. 2 shows the physico-mechanical properties of enamel.

Table 1

Phenol formaldehyde resin with the number of methyl groups of 7%

Phenol-formaldehyde resin with the amount of methyl groups 10%

Phenol formaldehyde resin with the amount of methyl groups of 12%

Phenol-formaldehyde resin appearance of enamel film Glitter slats viscosity according to AZ-4 viscometer at 20 s, s

20.1

20.1

20, 1

.20,3

20.5 Table 2 Uniform surface without wrinkles and pock marks At least 57 55

Content of nonvolatile substances,%

Drying time at 20 ± 2С, up to st. 3 h

Cover bending, mm

Film hardness on a maker device units

Chess board hiding power on raw film, g / m

Film durability to abrasion, kg / micron

Resistance of coatings at 40 ± 2 ° С, min.

to water for 10 minutes

to the action of a 0.5% solution of soap for 15 minutes

to the effect of a 1% solution of calcined

soda for 15 min

to the effect of 0.5%

CMC seagull solution

within 15 min

to the effect of 0.5%

Claims (2)

liquid soap solution for 15 min. Thus, the proposed enamel has an improved resistance to abrasion and detergents. Claims Enamel for floors, including phenol formahyde resin, vegetable Macjja, pigments, filler, desiccant, organic solvent, which is so as to increase the resistance of enamel to prolongation. Table 7. 64.4 65.9 65., O 65.3 65.1 18 1 20 1 20 1 20 one 0.370,40,380,360,37 78,075,076,876,477,8 0,350,380,390,380,38 Without From Without Without From Without Without From Without Without Without Changes of changes Changes of changes Lost Lost Lost Lost Lost gloss gloss gloss gloss gloss by 20% by 30% by 25% by 25% by 30% Lost Lost Lost Lost Lost gloss gloss gloss gloss gloss by 12% by 10.5% by 12% by 12.5% by 10.4% Lost Lost Lost Lost Lost gloss gloss gloss gloss gloss by 9%. on 11% by 11.5% by 10.4% by 9.0% Lost Lost Lost Lost Lost gloss gloss gloss gloss gloss by 21% to 24% to 25% to 21% to 22.5% to tyranny and detergents, it contains phenol-formaldehyde resin as a phenol-formaldehyde resin with a number of methyl groups of 7-12% with the following ratio of components, weight. %: Phenol-formaldehyde resin with the number of methyl groups of 7-12% 20.1-20.5 Vegetable oils 18.4-18.8 Pigments11.0-16.0 Filling9.0-14.0 78400788 Drying 6,8-7,2i, Enamel for floor FL-254, Organic rast-TU 6-10-733 and change 1. lord Else. 2. Enamel for floor FL-2109, Sources of information, tU 6-10-1553-76 and change i taken into account in the examination (prototype).