SU1546496A1 - Method of restoring ancient binding leather - Google Patents

Abstract

The invention relates to the restoration of antique leather bindings and makes it possible to increase the resistance of binding leather to aging. The cover surface is cleaned from dust. Then, binding leather is treated with a solution containing 0.3-0.5% sodium bicarbonate and 0.3-0.5% sodium acetate, washed with distilled water, treated with a 1-2% aqueous solution of the calcium salt of diethylenetriaminepentaacetic acid and washed with water. After washing, the skin is greased with a composition containing, by weight,%: hoof oil 23-25

beeswax 2,0-2,5

lanolin 5.0-7.0

synthetic fat 13-15

sulfonate - emulsifier "Volgonat" 0.75-1.0

OP-10 dispersant 0.75-1.0, N - oxydiphenylamine 0.6-0.8

sodium fluoride 1.5-2.0 and water the rest. Consumption of fat composition of 0.1-0.3 g per 1 cm ² skin. The binder, impregnated with a fatty compound, is placed in a polyethylene film for a day to more completely penetrate the fattening agent into the skin. 2 tab.

Description

synthetic fat (SZHM), a mixture of sodium salts of isomeric alkylsulfonic acids with the chain length of the alkyl radical C „-C 1t (sulfonate-emulsifier Volgonate), a mixture of ethoxylated mono- and dialkylphenols (dispersant OP-10), p-oxydiphenylamine and sodium fluoride in the following ratio, wt.%:

Hoofed oil Beeswax Lanolin

Synthetic fat (FAT)

Sulfonate emulsifier Tor Volgonat Dispersant OP-10 p-Oxydiphenylamine Sodium Fluoride Water

The method is carried out as follows.

Binding surface of the XVII-XIX centuries. subjected to mechanical cleaning, i.e. Using a hair brush vacuum cleaner removes dust and other mechanical contaminants. Then, to neutralize all the acids, the binding skin is treated with a solution containing 0.3-0.5% bicarbonate. sodium and 0.3-0.5% sodium acetate, after which it is washed with distilled water. Then the binder is treated with a 1-2% aqueous solution of the calcium salt of diethylenetriamine pentaacetic acid and washed again with water. After washing, a creamy fat composition is applied to the binder.

The consumption of the fat composition is 0.1-0.3 g per 1 cm of skin. The binder, impregnated with the fattening composition, is placed in a polyethylene film for a day for a more complete penetration of components 8 of the skin.

Specific examples of the implementation of the proposed method are given in table. one.

Depending on the degree of damage to the binding, such processing can be carried out by removing the cover from the book block lids, and without dismantling the binding.

Samples of vintage bookbinding processed by the proposed method and the method of the prototype, subjected to artificial aging.

o

0

five

thirty

35

40

45

50

55

The results of physical and mechanical tests and chemical analysis of vintage leather, restored according to the proposed method and the prototype method, are given in Table. 2

And data table. 2 it follows that the proposed method makes it possible to increase the elasticity of binding leather by 60–7 ° C, to increase the shelf life of vintage leather covers by 3 times, to preserve the strength of binding materials.

F ohm ula-iz eteni eposo5: the aggression of the ancient

| -C 1 SKIN, INCLUDE ZY1DIY Obg- PNPIlyl skin surface and the fat content of g-hr, including to maximal macaric wax and / “molin. about t - l and h l y and u with n, h-sa with tse-l increase the stability of binding k l and to aging, before fattening, the skin surface is additionally treated with an aqueous solution5 containing 0.3-0.5% hydrocarbonate sodium and 0 ,, -0.5% acetate, "is doused with water and treated with a .2% aqueous solution of calcium, and a type of diethylenetriaminepentaacetate cystite followed by washing with water, and, when fattening, a mixture of sodium salts of isomeric alkylsulfonic acids with an alkyl radical chain length, a mixture of oxysyl- hydroxyl monov - dialkylphenol, p-oxidephenip and yes and f. orid sodium at the following ratio of components,% in May:

Ungulate po 23,0-25,0

Beeswax2.0-2.5

Lanolin5.0 - /, O

Synthetic fat 13.0-15.0 A mixture of sodium salts of isomeric alkylsulfonic acids with an alkyl chain length. but the radical CM-Cfl 0,75-1,0 A mixture of ethoxylated mono - and dialkylphenolov0,75-1,0

p-Oxydiphenylamine 0.6-0.8

Sodium fluoride 1.5-2.0

WaterEverything

Table 1

Calcium salt diethylenetriaminepentaacetic acid,% 1,01,52,0

Fatting composition, wt.%:

Hoof maslo23,024,025,0

Beeswax2,02,52,25

Lanolin6,05,07,0

Synthetic fat

(SZHM) 13,014,015,0

With Pfonat-emulsifier Volgonat 0.750,851.0

Dispersant OP-101,00,750,85

p-Oxydiphenylamine, 70,60,8

Sodium fluoride2,01,751,5

Water49,8548,3545,6

Consumption composition, g / cm 0,10,20,3

Free fat content,%

before aging after aging The content of substances extracted by organic solvents,%

before aging after aging Iron content,% before aging after aging The tensile strength, kgf / mm

before aging after aging Relative elongation at the time of rupture. %

table 2

3.3 3.0

3.6

3.0

3.4 3.1

2 2

10.7 10.2

0.0015 0.001

10.8 10.0

0.0013 0.001

11.4 10.9

0.001 0.001

0.76 0.7

0.78 0.7

0.8 0.7

1546496

%

12-15

8 Continuation of table 2

17 15

4.7

4.0

5.2 5.2

22 20

5.4 5.2

5.3 5.3

21 20

4.8

; 7

5.4 5.5

Claims (3)

Forms of the invention A way to restore an old pegg? l plate leather, including dust removal. ·! the surface of the skin and fat with thalam, including captain oily wax and / e.'olin, from 7. and with a l, h “s, with the aim of increasing the resistance of the binding to aging, before The surface of the skin is additionally treated with an aqueous solution containing 0.3–0.5% sodium hydrogencarbonate and 0, −0.5% sodium acetate, washed with water, and treated with a 2% -nn aqueous solution of calcium <Diethylene triamine pentaacetic acid; subsequent washing with water, and when fatliquoring, the synthetic world, a mixture of sodium salts, is additionally introduced into the composition of isomeric alkyl sulfonic acids with a chain length of the alkyl radical C _m -C ^, a mixture of hydroxyethylated mon <- and dialkylphenols, p-oketstsnfenipa! and sodium fluoride in the following ratio of components, May,%: Hoofed bees Beeswax Lanolin Synthetic fat Mixture of sodium salts of isomeric alkyl sulfonic acids with an alkyl radical chain length C _M -C _fJ Mixture of hydroxyethylated mono- and dialkylphenols p-Oxydiphenylamine Sodium fluoride Water 23.0-25.0 2.0-2.5 5.0-7.0 13.0-15.0 0.75-1.0 0.75-1.0 0.6-0.8 1.5-2.0 Else Table 1 Chemical reagents Consumption reagents for examples one [ 3 Sodium Acetate,% 0.3 • 0.4 0.5 Sodium bicarbonate,% 0.4 0.3 0.5 Dietary Calcium Salt pentauxus acid,% 1,0 1,5 2.0 Fatliquoring composition, May 2: Hoofed oil 23.0 24.0 25.0 Beeswax 2.0 2,5 . 2.25 Lanolin 6.0 5,0 7.0 Synthetic fat (SJM) 13.0 14.0 15.0 With Ultonate Emulsifier • tor Volgonat ” 0.75 0.85 1,0. Dispersant OP-10 1,0 0.75 0.85 p-0xide14 phenylamine 0.7 0.6 0.8 Sodium fluoride 2.0 1.75 1,5 Water ‘49.85 48.35 45.6 Consumption of the composition, g / cm ^ ο, ι 0.2 0.3 table 2 Indicators GOST 20836.75 (new skin) Prototype Example 1 2 1 3 Free fat content, 2 before aging 3.0 3.3 3.6 3.4 after aging .. 3.0 . 3, about 3,1 Substance content extractable organic chemical solvents mi% before aging 12-15 9.8 10.7 10.8 P, 4 after aging. 9.8 10,2 10.0 10.9 The iron content,% before aging 0,092 0.0015 0.0013 .0,001 after aging 0,092 0.001 0.001 0.001 Tensile strength at tensile kg / mm ⁵ before aging 1.75 0.7 0.76 0.78 0.8 after aging 0.7 0.7 0.7 Relative elongation at the time of rupture,% -Continuation of table 2 Indicators GOST 20836.75 (new skin) Prototype one Example 2 3 before aging 12-15 Ϊ 7 17 22 21 after aging fifteen twenty twenty Hygroscopicity,% before aging 1.8 4.7 5,4 4.8 after aging 1.4 4.0 5.2 4’7 PH values before aging 3,7 5.2 5.3 5,4 after aging 3.6 5.2 5.3 5.5 Compiled by S. Likhachev