SU1381222A1 - Water-resistant wallpaper - Google Patents

Abstract

The invention relates to the manufacture of decorative materials and improves the printing properties of wallpaper while increasing their resistance to water and aqueous solutions of detergents. A base coat and a layer of printing ink are successively applied to the base paper. The primer contains ca. kaolin 100, casein 10, butadiene styrene latex 10, sodium polyphosphate 0.3, caustic soda 0.1 and chromatic pigment 0.001. Then put a layer of printing ink containing, wt.%: Chromatic pigment 15-28, copoly-. measures of butpacrylate, methyl methacrylate and methacrylic acid 47-55 and a mixture of dispersants: sodium salt of castor oil sulphate 10-26, polyoxyethyleneglycol ether fatty alcohol (with carbon numbers 8-10) 1-3 and the block copolymer of ethylene oxide and propylene oxide 6 -12. As a chromatic pigment, red azo pigment or yellow azo pigment, or green phthalocyanine is used. 1 hp f-ly, 2 tab. with S (L SAE CX to yu

Description

The invention relates to the production of paper-based decorative materials and can be used in the production of wallpaper.

The purpose of the invention is to improve the printing properties of the wallpaper while at the same time increasing their resistance to water and aqueous solutions of myrogens means.

Use in the layer of printing ink as a polymeric binder copolymer of butyl acrylate, methylmethacrylate and methacrylic acid, and as dispersants for a mixture of sodium salt of castor oil, polyethylene glycol ether of fatty alcohol with carbon atoms 8 10 and the block copolymer of ethylene oxide and propylene oxide 20 makes it possible to improve the printing properties of the wallpaper — to increase the maximum optical density of the print (with full printing of the surface of the primed paper) and its uniformity, with one - 25 temporary increase in their resistance to water and aqueous solutions of detergents.

This effect is achieved due to the joint use of an acrylic copolymer, such as D e from non-polar hydrocarbon radicals, polar groups (carboxyl groups) and a composite dispersant, which is a mixture of two components: ionogenic es (sodium salt of sulfuric acid ester oils and polyethylene glycol ester of fatty alcohol) and non-ionic (block copolymer of ethylene oxide and propylene oxide) .40

 Example 1. Moisture-resistant wallpaper consists of a base paper with a primer layer of the following composition, applied consecutively onto it, and.h.: d5

The filler (kaolin) 100

Dispersant (poly-

sodium phosphate) 0.3

Casein Yu

Butadiene n-styrene latex10

Caustic soda

A chromatic pigment (or dye) is a 0.001 layer of optical paint, the composition of which is given in Table. 1. Printing is done on the Holweg chisel press machine, whose working speed is 120 m / min, drying temperature 1.00 C.

SO

The following properties of the resulting moisture-resistant wallpaper are evaluated.

The maximum optical density of the pattern on primed paper, i.e. optical density in areas with full coverage. The optical density (for each color) is measured on a Macbeth densitometer, calculated as the difference D Dp - Bn, where Dp is the optical density of the pattern, D. the optical density of the soil and the average of 10 measurements (D.)

The uniformity of the optical density of the picture is estimated by the magnitude of the dispersion of the optical density of the LV, which is calculated by the formula

LO

(D, - V

i p (n - 1)

15 20 25

30 s 0

five

g

O

where is the optical density of one

definitions;

n is the number of definitions (n 10). Resistance to water is measured as the number of cycles rubbed with water on an IKB-3 instrument under load},

100 g

Resistance to detergents is measured on an IKB-3 device, as well as resistance to water, but using a 2% aqueous solution of mea, the data of the obtained properties are shown in Table 2,

EXAMPLE 2-10. Moisture-resistant wallpaper is obtained according to the technology described in example 1, the composition of the ink layer is given in table 1, the properties of the obtained wallpaper are given in table 2.

The analysis of the data given in Table 2 shows that the proposed moisture-proof wallpaper has a higher quality compared to the prototype (Example 5): the maximum optical density of the pattern on primed paper increases by 1.2 times, the uniformity is 9 times, durability to water 10 times, resistance to washing solution 8 times. In addition, the proposed wallpaper contains half as much natural casein polymer as a food grade.

Claims (1)

1. Moisture-resistant wallpaper, consisting of a base paper with a primer a layer containing a filler — kaolin chromatic pigment, dispersant — sodium polyphosphate, water-soluble binder-casein, caustic soda and butadiene-styrene latex; and a layer of inks containing chromatic pigment, a polymeric binder and a dispersant that differ from that, in order to improve the printing properties of the wallpaper while at the same time increasing its resistance to water and aqueous solutions of detergents, the ink layer as a polymeric binder contains a copolymer of butyl acrylate, methyl methacrylate and me acrylic acid in the ratio of these monomers, by weight%: Butyl Acrylate51-59 Methyl methacrylate 40-46 Methacrylic acid 1-3 and as a dispersant, a mixture of sodium salt of sulfuric acid ester of castor oil, polyoxyethylene glycol ether of fatty alcohol with the number of carbon atoms 8-10 and bl of a copolymer of ethylene oxide and oxide of propylene with the following ratio of components, wt.%: Chromatic pigment 15 Copolymer of butyl acrylate, methyl methacrylate and methacrylic acid47 Sodium salt of castor oil sulfate 10 Polyoxyethylene glycol ether of fatty alcohol with carbon atoms 8-10 1 Ethylene block copolymer and propylene oxide 62. Wallpaper POP.1, characterized in that the ink layer as a chromatic pigment contains a red azo pigment, or a yellow azo pigment, or green phthalocyanine, or a mixture thereof. Table 1 51 21 nineteen (9) 55 43 table 2 100 40