Composition for waterproofing pile of skins, fur suede, fur sheepskin and products from them
(57) Abstract:Composition refers to the leather and fur industry and household chemicals, in particular to compositions used for gidrofobiziruyuschey processing knotted leather, fur suede and fur sheepskin, as well as in chemical cleaning and daily care for leather and fur products. The composition contains paraffin, mineral oil, ester of o-phthalic acid and selectarray alkyladamantanes filler. The invention allows to improve the water resistance of the composition while maintaining high performance hygienic properties and low stiffness of the leather tanning and fur products. table 2. The invention relates to light industry and household chemicals, namely the production of compositions intended for additional gidrofobiziruyuschey processing Giovanni knotted leather (clothing and footwear velour, suede and so on), fur suede and fur sheepskin, as well as for chemical cleaning and daily care for leather and fur.Famous composition comprising paraffin wax, polyethylsiloxane liquid and catalyst - tetrabutoxide and others (A. C. USSR N 1594196, class C 09 G 1/10-Gina (complex composition and method of preparation stratified storage), is unsightly pile of skins, and the index of hydrophobicity, the estimated value of the wetting angle (G), does not exceed 89oi.e. effective water resistant, in which the value of G should be substantially above 90onot reached.Also known composition containing paraffin, polyethylene, polymethylsiloxanes liquid and others (A. C. USSR N 1654322, class C 09 G 1/10 - similar). The disadvantages of this composition are also low-tech, poor hygienic properties of the skin (low indices of air and water vapor permeability, hygroscopicity); in addition, the formed film dramatically affects the organoleptic properties of knotted leather (there is a variation and local polishing surface) and increases the stiffness of the leather.Closest to the technical essence and the effect achieved in the invention is a composition comprising paraffin, mineral oil, polyterpenes, in primary forms and dibutyl phthalate, smoothing the color of the pile surface of the leather (A. C. USSR N 1652354, CL C 14 C 9/00, 9/02 - prototype). The disadvantages of the prototype are the low water resistance of the composition and low hygiene is ü the claimed invention is improving the quality of the composition, to improve water repellency pile of skins, fur suede, fur sheepskin and products while ensuring high performance vapour and air permeability, hygroscopicity and maximum sorption of moisture by the material of pagodinho and vnutrivennogo space, as well as maintaining low stiffness leather.To achieve this goal according to the invention in a composition comprising paraffin, mineral oil and an ester of o-phthalic acid, is introduced selectarray alkyladamantanes filler at the following ratios, wt.%:
Paraffin - 12-23
Oil mineral 62-71
An ester of o-phthalic acid - 11-16
Selectarray alkyladamantanes filler - 1-4
As the paraffin used paraffin highly technical homogenized grade B (TU 6-09-4112-88) and paraffin oil firm purified grades a and B (GOST 23683-89) with a melting point 52-54oC.As the mineral oil used oil industrial Mar-8A-12A (GOST 20799-88), as well as oil-softner brand MP-75 (TU 38-101952-83).As complex>/P>Selectabase alkylolamides filler served ultrafine filler brand NVDM-8 (TU 2169-001-0470693-93), obtained by chemical modification of the surface of particles of silicon dioxide by alkylchloro silane in a gas-vapor stream. In appearance it is a granular white powder with a bulk density of 0.11 g/cm3; contents methylsilyl groups is 0.92 mmol/g, the content of hydroxyl groups - 0.51 mmol/g Specified filler has a high heat-, light - and weather resistance, biologically harmless and is not flammable.Use for cooking gidrofobiziruyuschey composition as modifying additives according to the invention selectabase alkyladamantanes filler does not cause technological difficulties dosing and mixing with other components. The high degree of dispersion systems (the size of the filler particles is less than 0.1 μm is close to the colloid) leads to high sedimentation and aggregate stability of the composition in the form of a melt and an organic solvent; the system does not stratify during storage, indicating a high processability of the inventive composition.The use of this is to improve water-repellent properties of these natural materials without deterioration as a result of waterproofing their organoleptic and ergonomic (softness, hygienic indicators, ecological purity) properties.The invention is illustrated in examples 1-7. A comparative example is known composition obtained by the use of polyterpenes, in primary forms (TU 81-0519-78), according to the prototype, but unlike the latter, dibutyl replaced by another more macromolecular representative esters of o-phthalic acid - dioctylphthalate, and the industrial AND oil-8A - another mineral oil softening agent MP-75 (example 1). In examples 2 to 7 shows the compositions and properties of the compositions and materials obtained with the use of selectabase alkyladamantanes filler.Known composition and the compositions 1 - 7 were prepared by the following method. In the capacity of an enamel or stainless steel with electric heater closed type was downloaded an estimated quantity of paraffin. After complete melting at a temperature of 60-70oC was introduced with careful mixing the desired amount of mineral oil, ester of phthalic acid and polyterpenes, in primary forms (known composition and example 1) or selectabase filler (examples 2 to 7).Example preparation of an optimum variant gidrofobiziruyuschey composition (example 5).melt the paraffin at a temperature of 60-70oC and under stirring was added 64 g of mineral oil MP-75, 13 g of dioctylphthalate and 3 g selectabase filler brand NVDM-8.Recipe of all variants gidrofobiziruyuschih compositions and known composition are presented in table. 1. The method of preparation does not differ from example 5.Compositions 1 - 7 and known composition was applied on the samples pile of skins, fur suede and fur sheepskin produced by typical methods that do not involve special gidrofobiziruyuschey handling during manufacture, or products from these materials after their preliminary chemical cleaning, as well as in daily care of clothes or shoes from these materials.Hydrophobized processing offered by the compositions and known compound was performed using the laboratory setup, simulating a drum machine chemical cleaning according to the following procedure. In the capacity poured into an organic solvent (perchloroethylene, white spirit), was added the calculated amount claimed gidrofobiziruyuschey composition or known composition and thoroughly mixed. The concentration of the final product depended on the type of processed material, pig split leather A8 - 10 min of rotation of the drum. The sample was then gently pressed between sheets of filter paper using plyaski and dried at a temperature of 45-50oC for 40-50 min in a fume hood. Consumption gidrofobiziruyuschey composition in all cases did not exceed 96 g/kg of the processed material.Preliminary chemical cleaning of the samples was conducted in the environment perchlorethylene in the same laboratory setup mode: module 7 baths, duration 4 - 6 minutesAdditional option of using the claimed composition is one-sided surface gidrofobiziruyuschey processing of the front side of the material or products (clothes, shoes) from the pile of skins, fur suede and fur sheepskin. This version of the hydrophobization can be recommended for use not only in production but also in the home for daily care for leather and fur products to ensure consistently high performance water resistance and hygienic properties. The technique of the operation is as follows. The composition was prepared similar to that described above in one of the best options formulations (examples 4 and 5). In a special container with a stirrer poured into an organic solvent (perchlorate is within 5 minutes preparing a homogeneous composition with a concentration of 40 - 45 g/L. the resulting product is evenly distributed on hydrophobinum surface using pulverizer device at a flow rate gidrofobiziruyuschey composition of 15-20 g/m sqOrganoleptic evaluation of hydrophobized samples showed no change in their color and hardness. Changes in linear dimensions of the samples (shrinkage or draw) is also not detected. The results of other tests are summarized in table. 2.It should be noted that the proposed composition for the hydrophobization pile of skins, fur suede and fur sheepskin, having good processing properties, does not impair the organoleptic properties of hydrophobized materials, can improve the performance of their water-repellent properties (compared to the prototype vodovoroty increases by almost 80%) without increasing the stiffness of the leather and significantly improve the level of performance of hygienic properties (hygroscopicity is almost 2 times the maximum sorption capacity of water vapor and 12.5%, permeability - 43%, the permeability is almost 2 times); i.e., resulting from the use of the proposed gidrofobiziruyuschey composition remains almost the level of oral hygiene index is. Composition for waterproofing pile of skins, fur suede and fur sheepskin, including paraffin, mineral oil and an ester of o-phthalic acid, characterized in that it further comprises selectarray alkyladamantanes filler in the following ratio of components in the mixture, wt.%:
Paraffin - 12 - 23
The mineral oil - 62 - 71
Ester of o-phthalic acid - 11 - 16
Selectarray alkyladamantanes filler - 1 - 4
FIELD: leather industry.
SUBSTANCE: semifinished product is degreased, neutralized, dyed, and lubricated. Dyeing is performed in two washing-interrupted steps with anionic black dye consumed in amount 0.5-0.6% of the weight of semifinished product in each dyeing step. Lubrication is followed by retannage with chrome tanner in amount 0.6-1.0% of the weight of semifinished product (calculated for chromium oxide) and treatment with 0.8-1.0% of spindle oil.
EFFECT: achieved deep black color and high performance characteristics.
1 tbl, 5 ex
FIELD: tannery or furry production.
SUBSTANCE: the invention is pertaining to the field of tannery or furry production and may be used for a piece by piece treatment of a tanning, furry semi-finished product with emulsions of "water in oil" type. The device for impregnation of sheets contains a mounted on the frame bath with a working compound, in which a corrugated roller is dipped, and also a feeding and auxiliary conveyers and a smoothing roller, a supporting means with a resilient counterbody, an actuator, a tool for removal of a finished semi-product, a device for creation of a hydrodynamic wedge and a pinch roller for engagement of the ribbed roller with the feeding conveyor. The problem of the presented invention is - development of the device simple in its servicing with a high reliability allowing to realize the process of impregnation more efficiently with a possibility of its installation in an automatic production line.
EFFECT: the invention presents a device simple in its servicing, having a high reliability, more efficient realization of the process of impregnation, a possibility of its usage in an automatic production line.
FIELD: tannery industry.
SUBSTANCE: claimed method includes treatment of chrome-tanned semi-finished product with antiseptic such as polymineral obtained from natural non-metal fossils (minerol), which is used in amount of 5-10 mass % based on semi-finished product. Minerol is also used as filler being introduced in retanning step with chrome compounds in amount of 5-10 mass % based on semi-finished product.
EFFECT: effective biological leather conservation after chrome tanning.
3 cl, 1 tbl
FIELD: chemical technology.
SUBSTANCE: invention relates to greasing and emulsifying substances used in fur, leather and other branches of industry. Invention describes a method for deep sulfonation of oxidized vegetable oils, fats and their mixtures, and oxidized mixtures with the nominal viscosity value in the range 33-75 by viscosimeter VZ-4 at 20°C in their treatment with sodium sulfite. The process is carried out in system consisting of oxidized component or mixture of oxidized components, sodium sulfite, water and soap additives, carboxylic acid, phenol and copper (II) salt as a catalyst in bead mill of vertical type at temperature of environment up to practically complete ceasing or quantitative consumption of sodium sulfite and charge of the latter is calculated by the following formula: mNA2SO3 = 0.006 x mOX x (I.N.)OX wherein mOX and (I.N.)OX mean mass and iodine number of oxidized component or mixture of oxidized components, respectively. The mass ratio of oxidized component and water varies in the range from 1:4 to 1:2.5. Dosing additives with respect to oxidized component are following: soap, 2%; carboxylic acid, 4%; phenol, 2.5%. Oxidized flax, sunflower, soybean and cotton oils, oxidized fish oil and mixtures of vegetable oils with fish oil or pig fat are subjected for sulfonation reaction with air in regimen of intensive bubble bubbling at 105 ± 5°. Soaps in indicated system are represented by sodium stearate and sodium oleate and by reaction mixtures of practically quantitative alkaline hydrolysis of fats and vegetable oils also. Benzoic, oxalic, malonic and citric acids are used as acid, and sulfate, acetate and other water-soluble salts of copper (II) are sued as a catalyst dosed in the amount (2-7.5) x 10-4 mole/kg of the parent charge. The sulfonation reaction degree is 33-40%.
EFFECT: improved preparing method.
5 cl, 1 tbl, 16 ex
FIELD: tanning industry.
SUBSTANCE: process is conducted in vertical mill to which soot, induline, kerosene and diesel fuel are introduced. Then components are mixed and slow heating the apparatus and its content is started after which mixing is switched off and slow heating of mill content is continued. Upon expiration of said time, acids or their compositions, white spirit and fatty additive are introduced and chemical mass-exchange process is performed at spontaneously fixed temperature due to thermal effects of this process and natural cooling at the beginning and at the end, as well as due to forced cooling at intermediate stage characterized by high rates of temperature at maximum of 140-150°C. At the moment when forced cooling is discontinued, 0.5-1.5 h before discontinuation of mixing and beginning of withdrawal at temperature of 80-115°C, 43-52-% solution of aluminum salts and C10-C20 of carboxylic acids is introduced into product being prepared.
EFFECT: facilitated procedure; increased amount of product.
1 tbl, 15 ex
FIELD: leather industry.
SUBSTANCE: preparation of composition is conducted on vertical-type bead mill. Induline, kerosene, and diesel fuel are consecutively charged into mill before stirring mechanism is energized, after which apparatus and contents thereof are slowly heated. Stirring is then stopped for 1 h while slow heating of mill contents is continued. When specified time expires, carboxylic acid or acid mixture, white spirit, fat additive, and aluminum oxide or hydroxide are added. Mechanic stirring is then switched on and contents of the bead mill are ground and the process is carried out at spontaneously fixed temperature caused by heat effects of the processes and natural cooling. When temperature is lowered to 85-120°C, desired product is discharged.
EFFECT: simplified process and increased product discharge degree.
1 tbl, 19 ex
FIELD: leather industry.
SUBSTANCE: method, which is suitable for finishing chrome leathers, comprises consecutively applying coating layers followed by action with low-temperature plasma at generator lamp anodic current intensity 0.2-0.6 A. Action of low-temperature plasma is effected for 180-240 sec at pressure 13.3-26.6 Pa in discharge chamber and consumption of plasma-forming gas (argon) 0.035-0.04 g/sec. Method is implemented on high-frequency plasma installation.
EFFECT: increased adhesion of coating to dry and wet leather, dye penetration depth, resistance to repetitive bends, and strength at better quality of leather.
FIELD: chemistry of polymers, chemical technology.
SUBSTANCE: invention relates to copolymers consisting of monomers comprising acid groups with double bond and other hydrophobic monomeric component used in prophylaxis of inorganic and organic deposits in water-bearing systems. Invention describes a water-soluble copolymer comprising: (a) monoethylene-unsaturated monomers chosen from group consisting of monocarboxylic acids, dicarboxylic acids and sulfoacids that can be neutralized; (b) at least copolymerizable hydrophobic acrylic, monocyclic and/or bicyclic terpene comprising unsaturated double bond wherein terpene hydrocarbon is preferable, and copolymer is prepared by free-radical copolymerization of components (a) and (b) in an aqueous phase. Also, invention describes a method for synthesis of abovementioned copolymer and methods for its using. Invention provides synthesis of nontoxic copolymer used for prevention of deposits in water-bearing systems that can be easily prepared from available components and able to store for a long time without loss of activity.
EFFECT: improved preparing method, valuable properties of copolymers.
22 cl, 6 tbl, 6 ex
FIELD: individual and household supplies.
SUBSTANCE: processing method for natural leather uppers after stretching and lasting operations involves high-frequency low-temperature unbalanced plasma effect in vacuum chamber with plasma generation air flow rate of 0.04-0.06 g/second for 180-280 seconds at 13-26 Pa pressure with discharge power of 0.7-2.0 kW.
EFFECT: enhanced shoe shape stability and adhesion durability in the wearing process.
1 dwg, 1 tbl
SUBSTANCE: modified leather is meant for making internal components of shoes with good biocidal properties and relates to light industry. The modified leather includes a collagenic base with a multilayer structure, tanning, retan, oiling compounds and a biocidal additive, the later being in form of silver nanoparticles and alkyldimethylbenzyl ammonium chloride in ratio of 1-:-0-1.5 respectively. Content of silver nanoparticles is 7×10-5 - 6.4×10-3 wt %.
EFFECT: wide range of lining leather while cutting on number of biocidal agents used on the leather and stabilisation of deformation-strength characteristics of the leather during its use, as well as improved environmental friendliness of the process of manufacturing said leather.