SU1693009A1 - Paint and varnish composition - Google Patents

Abstract

The invention relates to paint and varnish compositions for protective and decorative coatings used in the finishing of automobiles and other products. The purpose of the invention is to improve the technological properties of the composition and enhance the protective properties of the coating based on it. In the composition of the composition, wt.%: Film-forming (alkyd resin, alkyd-acrylic resin, alkyd-silicone resin, melamine-alkyd varnish) 25.0- 47.0; inorganic pigment 2,0-20,0; organic solvent - the rest, introduced monoazo pigment (0.04-2.0 May.%) based on the diazotized aromatic amine and 2,3-hydroxynaphthoic acid arylide, treated 1-3 May. % tall oil. 5 tabl,

Description

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The invention relates to the field of paints, in particular, materials based on alkyd or modified alkyd resins and azo-pigments, intended for protective and decorative coatings, for finishing cars, agricultural machinery and other products.

The aim of the invention is to improve the technological properties of the composition and increase the protective properties of coatings based on it.

As alkyd resins, the composition contains PF-060 and PF-053 type alkyd pentaphthalic resins modified with vegetable oils (sunflower, linseed, cotton, soybean), alkyd-acrylic resin (for example, AC-0133 is a copolymer of glyphthalic resin with butyl and methacrylic acid methyl esters), AKO-45-80 alkyd-silicone resin, pentaphthalic interaction product

resins with ethoxyphinylsiloxane resin), a mixture of alkyd resin and melamine formaldehyde resin - the basis of melamine-alkyd varnishes of type ML-0159, ML-0136, etc.

From organic solvents, xylene, solvent, white spirit, nephras AP 120/200 - a mixture of aromatic hydrocarbons and AP 150/200 - are used - the legroin fraction - distillate direct gasoline race, etc.

As pigments, the composition contains lead, lead-molybdate and zinc crowns, iron oxide pigments, titanium dioxide, as well as yellow lightfast pigment.

The composition may contain a filler, for example, microbarite. The monoazo pigment used in the composition, receive by a known method / 2. For this, 1.36 g of 4-aminobenzamide is taken, mixed with 2.5 ml of a 36% hydrochloric acid solution and 17 ml of water, cooled and diazotized

with

eight

"about

3.04 ml of a 20% sodium nitrite solution at 10 ° C. The diazo solution is clarified with charcoal and neutralized with 3.4 ml of a 20% acetate solution No. to pH 3-4; 3.02 go-anisidide, 2,3-hydroxy naphthoic acid is dissolved in 3.45 ml of a 20% sodium hydroxide solution, 10 ml of isopropanol or ethyl cellosolve, and a solution of 0.23 g of metapone in 5 ml of water is added . Azo coupling was carried out at 10–15 ° C, the diazocompound was tide for 15–20 min to a solution of ezosomes yushi. At the end of the coupling reaction, 0.18 g of tallow oil is added to the suspension, the suspension is heated at 75-80 ° C for 1 hour. The pigment is filtered, washed with warm water and dried at 60 ° C. A pigment powder containing 97% of red pigment and 3% of tall oil (crude tall oil) is obtained.

The composition is prepared as follows.

A mixture of pigment with or without filler is dispersed in the binder portion (pigment ratio = 1: 1) in a bead mill. Dispersing is carried out to a degree of 10-20 minutes on the device Wedge. To the resulting pigment paste, add the rest of the binder and solvent, mix, then filter. The finished paint-and-lacquer composition with a viscosity of 15–25 s according to the VZ-4 viscometer is applied to the pre-primed surface with a spray gun, drip or other methods.

Drying of the coatings is carried out at 85-135 ° C for 1.5-0.5 hours or at room temperature in the presence of a desiccant for 4-48 hours. As the desiccant, you can use, for example, LCD-1,

The Hs-change of the pigment pigment and the hardness of the coat on the basis of the gagan x-position are the same for all binders indicated by

Tables 1 and 2 show the properties of the modified monoazo pigment; 3 - compositions of the paint composition, and in table. 4 and 5 - the properties of the composition

and coatings.

Claims (1)

Invention A paint-and-lacquer composition comprising film-forming, inorganic pigment and organic solvent, which, in order to improve its technological properties and enhance the protective properties of coatings based on it, contains ohm as a film-forming resin selected from the group including alkyd resin, alkyd-acrylic resin, alkyd-silicone resin, mixture of alkyd resin and melamine formaldehyde resin in the form of melamine-alkyd varnish, and additionally monoazo pigment based on diazotized aromatic amine and arylide 2,3-hydroxy naphthoic acid, treated with 1-3 wt.% tall oil, in the following ratio of components, wt.%: 0 five 0 Specified film-forming Inorganic pigment Monoazo pigment based on diazotized aromatic amine and arylide of 2,3-hydroxy naphthoic acid, treated with 1-3 wt.% Tall oil Organic solvent Table 25-47 2-20 0.04-2 Else 35 -, 41.65 25 . - 3, 3 --3, 5 “And 65-51.1 96 --ten 0.04 0.4 Table 3 35-, 47 25 35 47 25 ten 12 ten 12 0.04 0.4 2.0 0.04 0.5 2.0 0.4 523.5 64.96 51, 0 34.0 Continued table. 3 Content, us., In the composition of the example Y: T :: T :: 1 P1E S 35 ... 35 I 10 12 It -. - , 15 | - - -, --ii5,5 37,7 S t.fc | -. 33.3 47, 0 25 thirty 22 20 ten 0.8 -. -. - zo r0, 1.2 0.5 0.3 0.3 0.04 2.0 2.0 O, O 2.7 66.96 "12.5 66, 57.96 Noting-e. In examples 1-6 uses monoazo pigment treated with 1 wt. | gall oil, in examples 7-15 use Monoazo pigment, treated with 3 wt.% tall oil. 47.0 25 thirty 22 S 20 ten 2.7 66.96 "12.5 66, 57.96 Corrosive damage to the metal under the coating after 30 days in a humid chamber,% 30 The stability of the coating of water to the first appearance of bubbles on the surface, day 10 10-clS 10-15 10-15 Ju-15 10-15 10-15 No change 15 20 20 15 hch 20 15 20 10-15 10-15 10-15 20 20 15 hch 20 15 20 20 20 20 20 20 15