SU896045A1 - Enamel - Google Patents

Description

(54) ENAMEL

The invention relates to paints and varnishes, namely, enamel m OLE applied to plastic, chipboard and other materials by intaglio printing in order to imitate valuable wood species. Known enamel, including alkyd-melamine-formaldehyde resin, tsvuo-jracb titanium, cymethylphthalag, aluminum stearate, mineral oil, aerosil, cyclic rubber and organic solvents SI However, it is suitable only for marking products using offset printing. The complex of printing and engineering properties provided by this enamel is insufficient for the intaglio printing method due to its high viscosity, low rolling and rolling properties and, as a consequence, the inability to repeatedly remove the oi seal without re-applying ink to the rolling roller, which leads to increase productivity. Closest to the invention to the technical essence and the achieved result, the result is enamel, comprising a 40% solution of cyclo-rubber in white spirit, chloroparaffin, pigments and white spirit. This enamel does not possess a complex of printing-technical properties sufficient for the intaglio printing method and does not have sufficiently high physicomechanical characteristics. The purpose of the invention is to improve the physicomechanical and enamel printing and technical properties. The goal is achieved by the fact that the Enamel, comprising a 40% solution of cyclo-rubber in white spirit, chloroparaffin, pigments and white spirit, additionally contains diethylene glycol, polymethylsiloxane and a non-ionic surfactant in the following ratio of components, May. %; 40% white cyclo-rubber solution in white spirit 20-22 89 5.5-6.5 Chloroparaffin 17-i9 Pigments Diaglycol glycol 2-4 O, 2-0.4 Polymethylsiloxane Non-ionogenic surfactant1-3 White spiritOther Cyclouchuc is represented by It is a hole for the isomerization of polyisoprene rubber to phenol in the presence of an Acid catalyst and is used in the enamel described as a 4O% aqueous solution in mineral spirits called Sintex-840. Lead-molybdate, lead-yellow crowns, etc. are used as pigments. A non-ionic surfactant is burnar or another substance of the same class. Enamel is prepared as follows. Pigments, diethylene glycol, Polymethylsiloxane, are loaded into a ball or bead mill. non-ionic surfactant, white spirit and part of cyclo-puchuka and chloroparaffin and dis

40% solution of cyclocouch 5-800 in white spirit

Chloroparaffin

Lead crown Lead yellow crown

Titanium dioxide

Diethylene glycolStearaxPolymethylsiloxane White spirit

22.0

20.0

21.0 54 pertigut to the degree of milling 15-2O units. according to the wedge method. The enamel is then left in the mixer with a mechanical stirrer, adding the remaining amount of cyclo-rubber and chloroparaffin to the pigment paste from a ball or bead mill. Stirring is continued until a homogeneous mass. After that, the enamel is filtered. Enamel is applied to the Cutting surface using a knurling roller. Examples of the specific implementation of enamel are presented in Table I, and the properties of the obtained coatings are presented in Table 2, due to the combination of new structural-viscous and elastic properties caused by the complex: diethylene glycol / surfactant and Polymethylsiloxane, the physical-mechanical and printing properties are improved. technical properties of enamel, which allows its use for gravure printing. This enamel can be used for intaglio printing on particle boards and other materials in order to imitate valuable rocks (fevesina. Table

Properties

Viscosity by VZ-4 viscometer at, St, in pretselah

Atsgezi, (points), not more

The content of non-volatile substances,%

I Drying time, min, at 20 C,

no-more than degree 1,

3, 4

Mechanical properties: Film hardness, not less

Bending strength, mm, not less than Uaar strength, kgf cm

Film durability to 25% solutions not less

Complex of printing technical properties

Degree of milling, ep, not less than (n wedge)

Stickiness at 0.5 m / s, rel. ea.

The behavior of enamel on the rollers of the printing system of gravure printing

Print quality

Claims (2)

Powering the paint system (constant ink supply) Claims of the invention Enamel, comprising a 4O96 solution of cyclo-rubber in white spirit, chloroparaffin, pigments and white-burner, characterized in that, in order to reinforce the physicomechanical and to impart printing and technical properties, it additionally contains diethylene glycol, polymethylsiloxane and a non-ionic surface 50 50 21 2O 35 18 36 34 Enamel well fills molds well transferred from roller to roller, does not dry for 16 hours. Imprint clear, opaque The enamel evenly enters the rollers, provides a constant feed for 16 hours the active substance during the next compaction of the components in May. %: 40% cyclo-caoutchouc solution in white spirit 20-22 Chloroparaffin5.5-6.5 Pigments17-19 Diethylene glycol2-4 Polymetipsiloxane 0.2-0.4 78960458 , Non-ionic surfactant-i. USSR author's certificate tno-active substance 1-3 № 690О48, cl. C O9 D 3/36, 1979. White Smoke Else Information sources. 2. Enamel KCH-728 is white. TU 6-10prini in the consideration during the examination of $ 590-75 (prototype).