SU690077A1 - Refined leather impregnating apparatus - Google Patents

Description

(54) COMPOSITION FOR PRSM1 TITLES OF PRESERVED SKIN

The invention of OTHOCHTdk to formulations used in refining leathers in order to eliminate such skin defects KcU REDUCTION. Known compositions for impregnating refined leathers contain aqueous dispersions on the base of vinyl monomers and accelerator of impregnation. Moreover, aqueous dispersions should have a certain complex of properties, which can be achieved by introducing various myomers in a certain ratio. A known composition for sGbla impregnation of burned leather is based on a dispersion obtained by emulsion polymerization of acrylic and methacrylic acid esters with the introduction of acrylic, methacrylic, itaconic acids, alkyl acrylamides and other additives that combine with accelerators of impregnation (penetrators) to reduce omin and esters. Odushishness of the facial layer of the skin 1. To improve the properties of the skin when it is treated, LNT-1 latex is used as a polymer dispersion in a mixture with other latex and Mti, for example, DMMA-65-GP, LV or MX-30 2. stain composition for treatment of the leather based on a copolymer of chloroprene and methacrylic acid chlorobutadiene 3. Application impregnating the soil based on this latex improves skin resistance to solvents, water, oil. A known skin primer composition comprising methyl methacrylate latex, alizarin oil, surfactant, organic solvent and additionally tanning agent ATP 4. The composition is applied to the skin with a defect SURFACE, resulting in an increase in suturing capacity of up to 83.3%. allow to judge the change of a strangling,. In addition, this formulation requires the introduction of an alizarin oil plasticizer to reduce stiffness and the introduction of tanning agent to relieve airflow. Impregnating soils are known on the basis of water dispersions SKS-30-1, SKS-50-1, SKN-2b, DMMA-65-1, MBM-3 and impregnation accelerators, which make it possible to reduce the minimum and maximum 10T 5 to 54% dependence on dispersion 5.

The indicated compositions and methods of processing of materials reduce the otmin and airdishness, but practically do not completely eliminate this defect of the goat.

The aim of the invention is to develop a composition for the impregnation of refined leathers, reducing the air showiness of the skin.

The goal is achieved by the fact that an 8-10% copolymer containing 72–74 wt.% Butyl acrylate (BD), 22 wt.% Methyl methacrylate is used as a latex in the composition for impregnating the skin, including an accelerator impregnating and acrylate-based latex. (MMA), 4.0-5.7 wt.% Diethylaminoethyl methacrylate (DEAEMA) in the following ratio of components, weight. h: Latex100

Accelerator

impregnation10

As an accelerator impregnation (penetrator) use organodny solutions of surface-active substances, for example, composition, wt.%; OP-1010

Isopropyl alcohol 25 Tsoda65

The latex used in the composition for impregnating the skin is obtained by emulsion polymerization in the presence of emulsifier C-10 and the initiator poly. Characteristics and properties of the composition for impregnation

1.BA: MMA: DEAEMA.100 72.3: 22: 5.78%

2.BA: MMA: 91EAEMA 100 74: 22: 48%

100 10%

(accelerator as in examples 1 and 2)

MBM-3

100

MA: BA: MAC 10%

62: 35: 3

(accelerator (prototype)

5. BA: MMA: DEAEMA. 10.0 72.3: 22: 5.78%

laBSSSr bSa::. ammonium ammonium persulfate at PH-8-9.

Latex is characterized by the following indicators:

Dry residue

32-34%

Residual monomer 0.2-0.8%

Rn 8-9

Surface

32-35d / s

1000 A tension

Particle size

In preparing the composition for impregnating refined leathers, the latex is diluted with water to a dry matter content of 8–10% and mixed with an acceleration impregnator. The composition is applied to skin samples and the properties of the impregnating composition are determined — the penetration rate and the change in the degree of perfume.

The results are shown in the table, where specific examples are given. In parallel, for comparison, examples 3 and 4 show the data of a known skin impregnation composition based on acrylic copolymer dispersion MBM-3, containing methyl acrylate (MA), butylCrylate (BA) and methacrylic acid (MAA) in the ratio: 52: 35: 3 as with the accelerator impregnation used in the proposed composition (example 3), and with the known accelerator impregnation PJ-ES (example 4).

95-98

97-98

0.8

60

54 ПЯ-ЭС)

Claims (5)

85 As can be seen from the table, the proposed solution for skin impregnation based on acrylic latex copolymer containing butyl acrylate, methyl methacrylate and diethylaminoethyl methacryl is much better than the best limestone of domestic formulations and allows virtually eliminate skin scent. DETAILED DESCRIPTION Composition for impregnation of refined leathers, including latex based on acrylates and an accelerator of impregnation, is characterized by the fact that, in order to reduce the perfume of the skin, an 8-10% copolymer containing 72-74% yutilacrylate, 22% is used as latex methyl methacrylate, 4.5–7.0% diethylminoethylmethylatelate, with the following segmented combinations, sec.4j, -:: Latex100 Impregnation accelerator 10–50 Sources of information taken into account in the examination 1. Use of new materials for filling leather. m., tsiitei light industry, 1973, p. 21-31. 2. Authors certificate of the USSR 380710, cl. C 14 C 9/00, 3. The author's svp detilstvo USSR 467107, c. 14 C 11/00. 4. USSR author's certificate 508523, cl. From 14 to 11/00. 5.Afonska N.S., Bakhareva N.N. et al. On impregnating primers for finishing sanded leather. - Kozheven no-obuvna proms lshnnost, 1973, 7, p. 46.