Bitumen-polymer material and method for production the same

FIELD: road, industrial and civil building, in particular sealing and hydraulic insulating material.

SUBSTANCE: invention relates to industrial method for production of modified bitumen mastic. Claimed bitumen-polymer material contains (mass %) oil bitumen 60-70; synthetic resin 2-10; oil solvent and/or black oil 18-30; sulfur-containing compounds 0.5-5.0; and additionally oxyethylated alkylphenol as surfactant 0.1-5.0. Sulfated mixture of oil bitumen, synthetic resin, oil solvent and/or black oil treated for sulfitation at 140-2300C is used as sulfur-containing compounds. Method for production of said material also is disclosed.

EFFECT: polymer-modified bitumen mastic and sealing of improved quality; method for production of increased capability; inexpensive raw materials; energy-conversation technology.

6 cl, 3 ex, 4 tbl, 1 dwg

 

The invention relates to the field of industrial production of modified bitumen compositions for road, industrial and civil construction, manufacture of waterproofing and roofing materials, sealants and mastics with improved technical characteristics. The resulting materials have a wide range of applications in various climatic zones, resistant to moisture, high and low temperatures, have adaptability in production and application.

There are various biomaterialia materials, which impose an additional variety of supplements, such as rubbers, thermoplastics, mineral fillers, plasticizers, antioxidants, adhesives, etc. depending on the destination and the required characteristics of their ratio may be different. However, the ways of introduction of the components, their distribution in the bitumen, homogenization and bringing them to the desired settings determine the time of the production process, technology, energy and quality that affects the cost of the produced materials. Therefore, because of these difficulties spread only a limited number of developments. Quite successful in this regard include: polymer-bitumen mastic hot applications “IZHORA”, MBR-G-90, MBR-G/BL-75,THE 5775-002-11149403-97; rubber-bitumen comp is sicyonia mastic MRBC AND/D, TO-003-40010445-2000; mastic and sealant materials “BITREX DI”, patent RU №2167898, NO. 2178434, TO-004-05204776.

Closest to the technical essence is a bitumen-polymer composition EN 2132857 containing rubber, bitumen, sulphur and organic accelerator of vulcanization, which as rubber contains a ternary copolymer of ethylene, propylene and Dicyclopentadiene, and also contains oil or industrial oil, or toluene in the following ratio of components, parts by weight:

bitumen 41-94

oil, or industrial

oil or toluene 3-48

rubber 3-8

sulfur 0,06-2,4

organic accelerator of vulcanization 0,06-0,24

Method for producing 2, EN 2132857, characterized in that the rubber is mixed with fuel oil or industrial oil, or toluene at 100-180°until a homogeneous mass, the resulting mass is added to the bitumen, sulphur and organic accelerator of vulcanization.

The disadvantages of bitumen-polymer compositions EN 2132857 are the presence of oil or oil as a solvent or plasticizer in the unbound form, thinning material, increase penetration and reduce the softening temperature and the result is used during operation, under the influence of kislotno-ozone destruction and solar radiation oxidizes and dries out and thus loses its original physicist who-chemical properties and performance characteristics (stated benefits). For compositions characterized by the absence of the metals or insufficient cohesive strength, tendency to ageing under the influence of solar radiation and oxygen. In addition, the authors stated that the lower limit of the content of the plasticizer oil or industrial oil may be 3 parts by weight, which implies according to the formula the minimum concentration of rubber in the mixture of all possible solvents to 50%of that under any circumstances it is impossible to achieve. Really the minimum amount of fuel oil or industrial oil, or toluene should not be less than 9 wt. hours while maintaining the composition of the other components in the composition, according to the formula and description EN 2132857. Increasing the softening temperature of the prototype is only possible with the increasing content of serosoderjaschei or time of vulcanization, resulting in too viscous, inhomogeneous, and thus not appropriate in the work material. The use of aromatic hydrocarbons (toluene) in the composition affects the ecological situation in the factory and on the construction site, among other things, no effect of improvement of technical characteristics of the material lowers the temperature of the flash, which increases the danger of fire, explosion, accident, accident, etc.

The aim of the present invention is to increase ADH is Ziya, resistance to atmospheric influences (moisture, oxygen and solar radiation, reduce manufacturing costs, simplify the process, and the conversion characteristics of the obtained materials to the requirements of Russian regulatory documents: SNiP 2.05.03-84, SNiP 3.06.04-91 “Bridges and pipes”, SNiP 2.03.11-85 “Ashita building structures from corrosion, VSN 32-81 instructions for waterproofing structures of bridges and pipes on railway, road and urban roads.”

Cost reduction is achieved by applying rubber mass production, such as SKI-3, SCA-ARKM, SCMS-ARKM, SKD-2, BK-1675N (T), (C), ethylene-propylene and etilenpropilendienovogo qualified electronic signature certificate-(T), shortening time process when using sulfonation and oxidation sulfoalkylation obtaining sulfonated mixture of petroleum bitumen, synthetic rubber, oil solvent with the presence of alkanesulfonyl R-SO2-OH, where R is a hydrocarbon radical, impact and influence which simultaneously contributes to the expansion of the range of thermal resistance and the strengthening of cohesive ties in the resulting bitumen-polymer material in the future BPM. Additionally, the use of sulfolobales allows controlled aging, get rid of aging during operation and the sweat and the quality of technical properties. The use of alkali, caustic soda, allows to obtain the composition of the bitumen-polymer materials mixtures, which contain salts of higher alkanesulfonyl - alkyl sulphonates R-SO3IU, where IU - metal. In particular, the participants of the alkyl sulphonates comprising BPM additionally affect surface-active properties, which increases the ability of the material to the wetting of the treated surface and enhance adhesion.

Prior receipt of a solution of rubber in the oil solvent and/or oil makes it easy to combine elastomer, which is the main modifier component that affect the physical and mechanical properties of the resulting bitumen-polymer materials with bitumen, which ensures uniform distribution of the components in the mixture. The application of different organic and mineral fillers allows to obtain a wide range of manifestations of mechanical properties, such as deformation strength, toughness, ductility, etc.

Material composition of the technical task of the present invention is implemented by obtaining a bitumen-polymer material consisting of petroleum bitumen, synthetic rubber, petroleum solvent and/or fuel oil, serosoderjaschei compounds and optionally containing a surfactant of axitinib the config alkyl phenol, as serosoderjaschei compounds it contains a sulfonated mixture of petroleum bitumen, synthetic rubber, petroleum solvent and/or oil processed before sulphurization of air at a temperature of 140-230°With, in the following ratio of components, parts by weight:

bitumen 60-70;

rubber 2-10;

sulfonated mixture of petroleum bitumen, synthetic rubber, petroleum solvent and/or fuel oil 0,5-5,0;

petroleum solvent and/or oil 18-30;

ethoxylated alkyl phenol is 0.1 to 5.0.

In bitumen-polymer material as one of serosoderjaschei components present alkanesulfonyl. After introduction of the mixture of sulfolobales in the reaction of sulfonation appear alkanesulfonyl increasing specifications BPM.

Additional introduction into the mixture after sulphurization of caustic soda allows you to get in the composition BPM salts of higher alkanesulfonyl - alkyl sulphonates.

The amount of introduction of alkali regulate the neutralization of alkanesulfonyl and accordingly the content of the alkyl sulphonates, and serosoderzhashchimi additionally can be alkanesulfonyl, alkylsulfonate or a mixture of alkanesulfonyl with alkyl sulphonates and other sulfur-containing compounds obtained by sulphonation of bitumen, rubber, petroleum solvent and/and and oil.

Additionally, BPM can contain as filler mineral powders, organic chips or multicomponent mixture in the following ratio of components, parts by weight:

bitumen 60-70;

rubber 2-10;

sulfonated mixture of petroleum bitumen, synthetic rubber, petroleum solvent and/or fuel oil 0,5-5,0;

petroleum solvent and/or oil 18-30;

ethoxylated alkyl phenol 0,1-5,0;

filler 1,0-15,0.

By the way, the technical problem is solved by obtaining a bitumen-polymer material comprising a mixture by mixing petroleum bitumen with a solution of synthetic rubber in the oil solvent and/or oil at a temperature with subsequent sulfonation, where you mix the oil with bitumen from 6.25 30% solution of rubber in the oil solvent and/or fuel oil, is stirred at a temperature of 140-230°processing the air until a homogeneous mixture, followed by sulfonation introduction within 10-60 min sulfolobales with getting in a mixture of serosoderjaschei connection, then enter the ethoxylated alkyl phenol in the following ratio, wt. including:

bitumen 60-70;

a solution of rubber in the oil solvent and/or oil 20-40;

structurae connection 0,5-5,0;

ethoxylated alkyl phenol is 0.1 to 5.0.

Also getting technical is does is solved by introduction after sulphonation in the bitumen, of rubber solution, serosoderjaschei compounds, prior to the introduction of acetylindole alkylphenol, alkali, in the following ratio, wt. including:

bitumen 60-70;

a solution of rubber in the oil solvent and/or oil 20-40;

structurae connection 0,5-5,0;

ethoxylated alkyl phenol 0,1-5,0;

lye (caustic soda) 0,5-5,0.

Thus the reaction is complete or partial neutralization of alkanesulfonyl with getting in BPM of alkyl sulphonates, the degree of neutralization regulate the amount of added alkali, depending on the desired technical characteristics of BPM.

If necessary to obtain the BPM with a higher viscosity indices, higher stiffness, higher melting point and heat resistance in addition enter the filler in the amount of 1.0 to 15.0 parts by weight of

The technology of BPM is as follows.

Pre-crushed crumbs of synthetic rubber, then it is mixed with fuel oil and petroleum solvent, or with one of them, and petroleum solvent may be kerosene, naphtha or oil solvent, white spirit, nefras, etc.

After obtaining a homogeneous solution with the required concentration in the range of 6.25-30%, it is introduced into a preheated to a temperature of 100°petroleum bitumen, which can be, for example, BND/130 or bn-90/10, who take the temperature to 140-230° With and mix with the processing air samozatachivanie into the mixture using a mechanical mixing device or force from a compressor, or any other vozduhonagrevatelej device.

After complete mixing of components in a mixture of bitumen with solution enter sulfoacetate, which may be, for example, sulfuric acid (H2SO4, discrete portions or by using calibrated to the flow rate per unit time of the dispenser within 10-60 min, and the time of introduction determine experimental way, depending on the feedstock used and the necessary requirements to the technical characteristics of finished products, such as the softening temperature and fragility.

Then injected surfactant is ethoxylated alkyl phenol, which can be polietilenglikolya ester of mono - and dialkylphenols R-C6H4O-(CH2CH2)n-CH2CH2HE, for example, OP-10 or ethoxylated monoalkylphenols based trimers of propylene neonol brand AF-10 in the right quantity and mix. If necessary, depending on the particular purpose of the material obtained, in the resulting add the filler, which may be dolomite powder, silica or carbon black, crumb rubber, mineral powder or multicomponent mixtures the ü. After mixing of incoming components and achieve homogeneity of the finished product is drained and stariway.

Recommended substances for bitumen-polymer material:

a) rubber - qualified electronic signature certificate-(T), TO-035-05766801-95;

BK-1675N TO-034-05766801-95;

SKI-3, GOST 14925-79; SCDC(N), TU-073-05766801-98

b) fuel oil M-100 GOST 10585-75;

C) bitumen BND 90/130, GOST 22245-90; bn-90/10, GOST 6617-76;

g) surfactant - AF 9-10, THE 2483-077-05766801-98; OD-10, GOST 8433-81;

d) solvent naphtha K-6, TU-0250-001-04855329-94; solvent oil GOST 10214-78; white spirit C4-155/200;

(e) the filler is carbon black P-514, TO-41558-97; crumb rubber fraction 1.0-1.5mm, THE 38.00149438-48-92, mineral powder, GOST 16557-78;

g) sulfoalkylation - sulfuric acid, GOST 2184-77;

C) alkali - caustic soda NaOH.

The invention is illustrated by the following examples.

Example 1

1.1 Crumb rubber, SKEPT-40 in the amount of 15 kg are mixed and dissolved in 85 kg of fuel oil M-100 at a temperature of 100°C.

1.2 the resulting solution is introduced into 300 kg preheated liquid bitumen BND 90/130 and raise the temperature to 180°With simultaneous mixing and processing of air provided by samozatachivanie in the mixture during operation of the mixing device.

1.3 After a homogeneous mixture with continued stirring over 20 minutes to enter sulfoalkylation, 15 kg of concentrated deer is th acid (H 2SO4. After 30 min after cessation of acid take the analysis of the material obtained according to the softening temperature T Kish°With the required specifications and in case of positive result in the mixture injected 15 kg of polyoxyethylene monoalkylphenol brand neonol AF-10 and mixed for 30 min, the temperature maintained within the range of 160-180°C.

1.4 At the end of the cooking product is drained. The ratio of incoming components and composition of the resulting bitumen-polymer material are presented in Table 1.

Example 2

2.1 Crumb rubber SKI-3 in the amount of 15 kg are mixed and dissolved in 80 kg of fuel oil M-100 and 5 kg of C4 155/200 at a temperature of 100°to obtain a homogeneous mass.

2.2 the resulting solution is injected 350 kg preheated liquid bitumen BND 90/130, raise the temperature to 180°and mix with the processing of mixtures of air.

2.3 After a homogeneous mixture with continued stirring for 20 minutes introduce 15 kg of sulphuric acid.

2.4 After 30 min after cessation of acid after oxidation and sulfonation with simultaneous distillation of light fractions of solvent C4 produce a sample for analysis of the softening temperature. In case of discrepancy Dis°With the necessary mixing process continues until you reach the desired result and the hen in the mixture injected 5 kg of OP-10 and mixed for 10 min at T=160-180° C.

2.5 At the end of the process obtained introducing a mixture of mineral powder, rubber crumb 25 kg each, and within 45 min mix to the full distribution and uniformity.

2.6 the Finished product is drained and stariway. The ratio of incoming components and the composition obtained BPM is presented in Table 2.

Example 3

3.1 Crumb rubber SDK(N) in an amount of 15 kg is mixed with 80 kg of fuel oil M-100 at T=100°and dissolved to obtain a homogeneous mass.

3.2 the resulting solution is injected 350 kg of liquid bitumen BND 90/130, raise the temperature to 180°and mix with the processing of mixtures of air.

3.3 After a homogeneous mixture, with continued stirring for 20 minutes being 15 kg of sulphuric acid.

3.4 30-50 min after cessation acid and carrying out the sulfonation determine the softening temperature of the material obtained in the case of obtaining a positive result, i.e. achieve the necessary Dis°, enter 15 kg crystalline caustic soda NaOH and mixed for 30 min to obtain the composition BPM sulfonated mixture of alkyl sulphonates.

3.6 Then enter 5 kg of neonols AF-10 and stirred for 20 minutes at a temperature of 160-180°C.

3.7 At the end of the process of mixing with the surfactant in the resulting injected carbon black P-514 in the amount of 50 kg and mix to one of the one state. The finished product is drained and stariway. The ratio of incoming components and the composition obtained BPM in Example 3 are presented in Table 3. Characteristics of the resulting BPM is presented in Table 4.

The kinetic dependence of the degree of preparation of bitumen-polymer materials when applying sulfolobales in the process, in comparison with the method for production of modified bitumen and bitumen-polymer materials by air oxidation are shown in the graph 1.

Curve 1 shows the dynamics of changes in the softening temperature T°With quiche without the use of sulfolobales. Curve 2 shows the dynamics of changes in the softening temperature T°With Kish using sulfolobales.

Depending on the purpose of the bitumen-polymer material ratio of its components can vary. The softening temperature is a decisive indicator for determining the degree of readiness of material and is regulated by the amount of sulfolobales, time of mixing, the temperature of the process. Physico-mechanical properties of bitumen-polymer materials BPM allow you to use them as mastics for repair of highways, sealants for sealing the bulkhead joints, coating masses for waterproofing, corrosion protection master is selected pipelines and metal structures. The material is resistant to low and high temperatures, which allows them to operate in the Northern and southern regions of Russia.

The ratio of incoming components and composition of the resulting bitumen-polymer materials BPM.

Example 1

Table 1
Incoming componentsThe number of kgThe composition BPMThe quantity wt. h
Rubber, SKEPT-4015Rubber, SKEPT-403,5
Mazut M-10085Mazut M-10020
Bitumen BND/130300Bitumen BND/13066,5
H2SO415H2SO4-
  Sulfur-containing compounds3,5
Neowolf-1015Neonol AF-103,5

Example 2

Table 2
Incoming componentsThe number of kgThe composition BPMThe quantity wt. PM
Rubber SKI-315Rubber SKI-3
Mazut M-10080Mazut M-10015,5
Bitumen BND/130350Bitumen BND/13065
H2SO415H2SO4-
  Sulfur-containing compounds3
C4-155/2005C4-155/200-
The substance of the OP-105The substance of the OP-101
Mineral powder FR. 0,07 mm25Mineral powder FR. 0,07 mm4,8
Crumb rubber25Crumb rubber4,8

Example 3

Table 3
Incoming componentsThe number of kgThe composition BPMAmount, parts by weight
Rubber SDK(N)15Rubber SDK(N)2.8
Mazut M-10080Mazut M-10015,1
Bitumen BND/130350Bitumen BND/13063,2
H2SO415H2SO 4-
Caustic soda15Caustic soda-
  Sulfur-containing compounds, including: Alkanesulfonyl, alkyl sulphonates2,8
Neowolf-1015Neowolf-9-1015
Carbon black P-51450Carbon black P-51410

Table of the main technical indicators of the bitumen-polymer material

Table 4
Name of indicatorExample 1Example 2Example 3The placeholder
Softening temperature, T°, Kish, not below80959054
The depth of penetration of the needle of 0.1 mm, at +25°With not less than252533103
Flexibility on the beam radius R=25 mm, °C, not above-25-25--
Low temperature brittleness at Fraas, °C, not above-30-25-25-33
Theplot icost, do not lower °708580-
Compliance, cm, at +25°With not less than675-
The adhesive strength of concrete, MPa, not less, at +20°0,20,30,5-
The nature of separationcohesion

NYY
cohesion

NYY
cohesion

NYY
-
Adhesion to steel, MPa, not less, at T=+20°0,7--no.
Water absorption for 24 hours, mass%, not more than0,10,20,15-
Elasticity at +25°,%, not less than507050-
Flashpoint °C, not below220230220170-180

1. Bitumen-polymer material consisting of a mixture of petroleum bitumen, synthetic rubber, petroleum solvent and/or fuel oil, serosoderjaschei compounds, characterized in that it additionally contains as a surfactant ethoxylated alkyl phenol, as serosal rasih compounds it contains a sulfonated mixture of petroleum bitumen, synthetic rubber, a petroleum solvent and/or fuel oil, to the sulphurization of the treated air at a temperature of 140-230°With the following ratio of components, parts by weight:

bitumen 60-70;

rubber 2-10;

the above sulfur-containing compounds 0,5-5,0;

petroleum solvent and/or oil 18-30;

ethoxylated alkyl phenol is 0.1 to 5.0.

2. Bitumen-polymer material according to claim 1, wherein the sulfonated mixture is further treated with caustic soda.

3. Bitumen-polymer material according to claims 1 and 2, characterized in that it further contains a filler in an amount of 1.0 to 15.0 parts by weight of

4. A method of obtaining a bitumen-polymer material comprising a mixture by mixing petroleum bitumen with a solution of rubber, SKEPT in the oil solvent and/or oil at a temperature with subsequent sulfonation, characterized in that mix oil with bitumen from 6.25 30% solution of rubber in the oil solvent and/or fuel oil, is stirred at a temperature of 140-230°processing the air until a homogeneous mixture, followed by sulfonation introduction within 10-60 min sulfolobales with getting in a mixture of sulfur-containing compounds, then enter the ethoxylated alkyl phenol with the following ratio of components, parts by weight:

bitumen 60-70;

the above solution of rubber 20-40;

sulfur-containing compound 0,5-5,0;

ethoxylated alkyl phenol is 0.1 to 5.0.

5. The method of receiving according to claim 4, characterized in that before the introduction of the ethoxylated alkylphenol after sulphonation injected alkali in amount of 0.5 to 5.0 parts by weight of

6. The way of getting claims 4 and 5, characterized in that after the introduction of the ethoxylated alkylphenol impose additional filler in the amount of 1.0 to 15.0 parts by weight and stirred.



 

Same patents:

FIELD: highway and aerodrome engineering, in particular binder for highway engineering.

SUBSTANCE: claimed binder contains (mass %): bitumen 95-98.5; propylene pentamers (waste from fractionation of propylene oligomers to produce propylene trimers and dimers).

EFFECT: decreased brittle point, improved adhesion, and increased elasticity.

1 ex, 3 tbl

Bitumen emulsion // 2244725

FIELD: road-building materials.

SUBSTANCE: pavement-intended bitumen emulsion contains, wt %: bitumen, 45-49; surfactant-type emulsifier in the form of amines, diamines, polyamines, and quaternary ammonium salts, 0.125-0.25; aqueous hydrochloric acid for neutralization of emulsifier, 1-2; additionally, polyalkylbenzene resin produced as by-product in isopropylbenzene production process, 1-15; and water, the balance.

EFFECT: increased resistance of bitumen component to oxidative ageing processes without losses in other performance characteristics.

2 tbl, 12 ex

FIELD: highway building and repair, in particular surface treatment of pavements.

SUBSTANCE: claimed emulsion contains (mass %) mineral material 83.5-87.5 and cation bitumen emulsion 11.5-14.5. Mineral material additionally contains cement 1.0-2.0; cation bitumen emulsion contains (mass %) bitumen 60/90 59.0-65.0; cation emulsifier 0.7-0.9; surfactant admixture 0.15-0.25; calcium chloride 0.07-0.13; hydrochloric acid 0.35-0.60; oxyethylated phenolic alcohol 0.65-0.80; and balance: water.

EFFECT: mixture with improved adhesive quality of binder with mineral acidic and basic rocks; improved strength characteristic, increased water resistance coefficient, enhanced emulsion decay time.

1 ex, 4 tbl

Bitumen emulsion // 2243245
The invention relates to cationic bitumen emulsions, which are used as the binder material for the device and repair the road surface, and can be used for rough-surface treatment and for patching pavement

The invention relates to materials used for the insulation of pipes and pipe systems, and can be used in the construction and repair of pipelines for various purposes, including underground pipelines, oil pipelines and gas pipelines in the summer and winter periods of time

Binder for pavement // 2241723
The invention relates to a binder for pavement and can be used in road and airfield construction and in the construction of roofs, waterproofing and sealed seams

The invention relates to the construction of roads and can be used when the device is thin surface treatments pavements, for preparation of cold mixes for construction and repair of road surfaces, etc

FIELD: rubber industry.

SUBSTANCE: curing agent contains, wt %: sulfur 45.0-90.0, 1,4-bis(trichloromethyl)benzene 5.0-40.0, hexamethylenetetramine 1.0-5.0, and wax 2.0-10.0. Agent is prepared by mixing sulfur melt with molten 1,4-bis(trichloromethyl)benzene at 115-120°C followed by adding hexamethylenetetramine and wax, raising temperature to 140-150°C, and stirring resulting melt at this temperature during 30-40 min, whereupon melt is cooled in thin layer to 15-20°C.

EFFECT: improved distribution of curing agent in rubber compound, increased resistance to reversion during prolonged vulcanization of rubber and to thermal-oxidative action.

3 cl, 5 tbl, 7 ex

FIELD: rubber industry.

SUBSTANCE: curing agent contains, wt %: sulfur 45.0-90.0, 1,4-bis(trichloromethyl)benzene 5.0-40.0, hexamethylenetetramine 1.0-5.0, and wax 2.0-10.0. Agent is prepared by mixing sulfur melt with molten 1,4-bis(trichloromethyl)benzene at 115-120°C followed by adding hexamethylenetetramine and wax, raising temperature to 140-150°C, and stirring resulting melt at this temperature during 30-40 min, whereupon melt is cooled in thin layer to 15-20°C.

EFFECT: improved distribution of curing agent in rubber compound, increased resistance to reversion during prolonged vulcanization of rubber and to thermal-oxidative action.

3 cl, 5 tbl, 7 ex

FIELD: organic chemistry, rubber industry.

SUBSTANCE: invention relates to a chemical compound, namely to polyaniline (poly-p-phenyleneamineimine) that is used as an antiager for rubbers. Polyaniline of the formula: wherein m = n = 1 with molecular mass 25 x 103 Da is used as an antiager. Invention provides enhancing thermostability of vulcanized rubbers.

EFFECT: improved and valuable properties of antiager.

2 tbl, 2 ex

FIELD: woodworking industry, in particular composition for soft groundwood board.

SUBSTANCE: claimed composition contains (mass %): wood fiber 86.7-92.5; fiber-containing precipitate 9.6-3.8; paraffin emulsion 2.5; and sulfuric acid 1.2; wherein ratio of wood fiber and fiber-containing precipitate is 90-96:10-4, respectively. Fiber-containing precipitate used as wood raw material represents waste from wet method for production of soft groundwood board and sulfate method for production of cellulose.

EFFECT: method for production of soft groundwood board with reduced prime wood mass consumption without deterioration of characteristics.

2 tbl, 1 ex

FIELD: highway and aerodrome engineering, in particular binder for highway engineering.

SUBSTANCE: claimed binder contains (mass %): bitumen 95-98.5; propylene pentamers (waste from fractionation of propylene oligomers to produce propylene trimers and dimers).

EFFECT: decreased brittle point, improved adhesion, and increased elasticity.

1 ex, 3 tbl

Bitumen emulsion // 2244725

FIELD: road-building materials.

SUBSTANCE: pavement-intended bitumen emulsion contains, wt %: bitumen, 45-49; surfactant-type emulsifier in the form of amines, diamines, polyamines, and quaternary ammonium salts, 0.125-0.25; aqueous hydrochloric acid for neutralization of emulsifier, 1-2; additionally, polyalkylbenzene resin produced as by-product in isopropylbenzene production process, 1-15; and water, the balance.

EFFECT: increased resistance of bitumen component to oxidative ageing processes without losses in other performance characteristics.

2 tbl, 12 ex

FIELD: highway building and repair, in particular surface treatment of pavements.

SUBSTANCE: claimed emulsion contains (mass %) mineral material 83.5-87.5 and cation bitumen emulsion 11.5-14.5. Mineral material additionally contains cement 1.0-2.0; cation bitumen emulsion contains (mass %) bitumen 60/90 59.0-65.0; cation emulsifier 0.7-0.9; surfactant admixture 0.15-0.25; calcium chloride 0.07-0.13; hydrochloric acid 0.35-0.60; oxyethylated phenolic alcohol 0.65-0.80; and balance: water.

EFFECT: mixture with improved adhesive quality of binder with mineral acidic and basic rocks; improved strength characteristic, increased water resistance coefficient, enhanced emulsion decay time.

1 ex, 4 tbl

Bitumen emulsion // 2243245
The invention relates to cationic bitumen emulsions, which are used as the binder material for the device and repair the road surface, and can be used for rough-surface treatment and for patching pavement

Bitumen emulsion // 2243245
The invention relates to cationic bitumen emulsions, which are used as the binder material for the device and repair the road surface, and can be used for rough-surface treatment and for patching pavement

The invention relates to compositions of expandable styrene polymer in the form of beads, for cooking, for materials - foam balls and molded components made of polystyrene

The rubber mixture // 2241010
The invention relates to rubber industry and can be used in aggressive environments, in particular in the communication system for the manufacture of bushings for the suspension of the self-supporting fiber optic cables
Up!