Thermoplastic composition for marking road
(57) Abstract:The invention is used as a material for marking the roadway with asphalt concrete pavement. The composition includes a film-forming substance, a plasticizer, titanium dioxide, antiegalitarian additive, glass beads and mineral filler. As film-forming binders used solid polyester resin, containing in its composition to 55% of terephthalic acid, plasticized with one or more substances. The number of components in specific proportions (wt. %) allows to reduce the brittleness and increase the elasticity of thermoplastic composition for marking of the roadway. table 1. The invention concerns the establishment of a composition for marking the roadway with asphalt concrete pavement to ensure road safety.The number of known compositions road-marking coatings (PDA), which differ from each other primarily by the type of film-forming defining the main technical characteristics of the material. This is due to differences in the requirements for the PDA, climatic conditions, availability of raw materials and production Emeishan modifier used polyacrylates, copolymers of acrylates with styrene. Such binder used in the Japan patent (application 496976, MKI5C 09 D 4/02, C 09 D 5/00). In the patent of Russia 2083374, MKI6B 32 B 5/16, E 01 F 9/00 as polymeric bases are applied polyurethane and a mixture of polyester resin (patent of Russia 2074872, MKI6C 09 D 167/02).In other domestic developments thermoplastic marking compositions as used by various film-forming solid polyester resin in combination with plasticizers (USSR author's certificate 826733, CL E 01 F 9/04; patent of Russia 2074921, C1 E 01 F 9/04).The closest analogue is the composition of a polyester resin comprising a plasticizer, a pigment, antiegalitarian and lighting additives and filler (patent of Russia 2074921, C1 E 01 F 9/04).Disadvantages it is the increased brittleness at low temperatures and as a consequence not enough high durability on the road.The invention solves the problem of improving the film-forming substance from the point of view of reducing fragility, increase elasticity, and the whole mixture as a whole.These goals are achieved as follows.1. By using the polyester is the number to 55%, which reduces the glass transition temperature of the PDA 5-7oC.The resin is obtained by polycondensation of aliphatic glycols (C2-C5) (ethylene glycol, di - and triethylene glycol, neopentylglycol and others) and duotronic aliphatic acids not less than C4(phthalic anhydride, terephthalic acid in pure form or in the form of dimethyl terephthalate, polyethylene terephthalate, and others ), for example, taken in the following ratio, %:
The glycol - 31-28
Phthalic anhydride is a 41-17
Terephthalic acid - 28-55
Synthesis of polyester resins is carried out with a stepwise increase in temperature from 160 to 250oC to obtain the desired softening temperature of the resin.2. Use as a plasticizer compounds containing in their structure only aliphatic fragments.As is known, these compounds improve the frost resistance unlike plasticizers containing aromatic fragments.Given the polarity of the polyester resin for plasticization, were used polyesters with an acid number of from 0 to 80 mg KOH/g based on aliphatic dibasic acids (not less than C4) (adipic, azelaic, sabotinova and others) and aliphatic gli is a mini-polyesters is carried out at a stepwise increase in temperature from 130 to 220oC to obtain the desired acid number.The use of such plasticizers in combination with the above-mentioned polyester resin reduces the temperature brittleness at 10-13oC (Fraas).Composition for marking the roadway includes a film-forming substance in the form of a polyester resin containing up to 55% of terephthalic acid, with a melting point of at least 70oC, a plasticizer, a complex of the polyester based on aliphatic dibasic acids (not less than C4and aliphatic glycols (C2-C5), as well as titanium dioxide, antiegalitarian additive (kaolinite and others), glass beads, mineral fillers (quartz sand, quartz and glass crushed, carbonates and others).The content included in thermoplastic composition of the following components, percent:
Polyester resin - 15-30
Plasticizer - 3-10
Titanium dioxide - 4-10
Antidementia additive - 3-10
Glass beads - 0-30
Mineral filler - Rest
The results are illustrated by examples.Example 1.Take a sample of components for a particular part of the PDA (see table) is smetacek coating is used for drawing on the asphalt and for sample preparation. Thermoplastic composition for marking of the roadway, including film-forming substance, a plasticizer, titanium dioxide, antiegalitarian additive, glass beads, mineral filler, characterized in that used as film-forming polyester resin, containing in its composition to 55% of terephthalic acid, with a melting point not lower than 70°C and as plasticizers - polyesters with an acid number of from 0 to 80 mg KOH/g based on aliphatic dibasic acids not less than C4and aliphatic glycols (C2-C5), and its constituent components are taken in the following ratio, wt.%:
Polyester resin is 15 - 30
Plasticizer - 3 - 10
Titanium dioxide - 4 - 10
Antidementia additive - 3 - 10
Glass beads - 0 - 30
Mineral filler - Rest
FIELD: polymer materials.
SUBSTANCE: invention relates to polyester-based resins and utilization thereof in two-component compositions and water-based coating compositions and provides a resin based on ramified hydroxyl-functional polyester with average hydroxyl functionality >2, hydroxyl number 25-300 mg KOH/g and average number molecular mass 500-3000, which resin contains poly(alkylene oxide) groups and optionally sulfonate groups. Resin is characterized by that it contains reaction product of (i) carboxylic acid mixture containing 50-80 mol % m- and/or p-aromatic and/or cycloaliphatic monocarboxylic acid containing more than 6 carbon atoms and, optionally, acid containing three or more functional groups; and (ii) alcohol mixture including aliphatic diol containing at least 4 carbon atoms, C1-C4-alkoxypolyalkyleneoxyde glycol and/or C1-C4-alkoxypolyalkyleneoxyde-1,3-diol with average number molecular mass 500-3000 and, optionally, polyatomic alcohol containing 3 or more functional groups. Resin is further characterized by carboxylic number ≤20 mg KOH/g (less than 0.357 mequ COOH groups per 1 g polymer) and, optionally, sulfonate number ≤4 mg KOH/g (less than 0.070 mequ sulfonate groups per 1 g polymer), wherein acid groups are at least partly neutralized. Resin is used as a base for preparing aqueous dispersion, aqueous cross-linkable binding composition, and aqueous coating composition.
EFFECT: facilitated removal of water from resulting coating layer and accelerated setting velocity for binding composition.
14 cl, 7 tbl, 82 ex
SUBSTANCE: there is disclosed inhibition procedure of attack by organic acid, such as acetic acid, of thermoplastic polymer covering the body and/or bottom of a metal container. Said procedure involves heat treatment of all polymer-coated metal parts of the container to be in contact with organic acid with heating the polymer higher than its melting point.
EFFECT: polymer coating effectively protects a metal base from attack of organic acids.
4 cl, 4 dwg, 4 tbl, 2 ex
SUBSTANCE: thermoplastic for marking automobile roads and aerodromes contains polyester resin with melting point of 70-85°C and acid number 35-40 mg KOH/g, obtained based on phthalic anhydride and glycerin in amount of 20-30 wt %, rutile titanium dioxide in amount of 3-10 wt %, white quartz sand 21-37 wt %, glass microspheres in amount of 4-24 wt %, Laprol 3003 - polyether with molecular weight of 3000 based on propylene and ethylene oxides in amount of 1-10 wt % and 10-30 wt % crushed marble.
EFFECT: thermoplastic is characterised by high wear resistance, does not cause skidding, dries fast when deposited on the road surface, has good adhesion to the road surface and can be used in different climatic regions under the temperature of -40°C - +40°C.
2 tbl, 3 ex
SUBSTANCE: invention relates to processing plastics, specifically to a polyester composition for protective coating metal surfaces. A polyester composition is described, containing the following in wt %: polyethyleneterephthalate - 10.0-92.5, dimethylphthalate and/or diethylphthalate - 4.5-87.0, copolymer of ethylene with vinyl acetate - 1.5-12.0, hydroquinone - 0.1-0.8, heat stabiliser - 0.2-2.5 and talc or basalt as filler - 0.5-12.5.
EFFECT: proposed polyester composition provides 1,5 times increase in strength and 1,5-2 times increase in adhesion strength to steel at 20°C.
2 cl, 14 ex, 2 tbl
SUBSTANCE: composition contains a radiation-curable olibomer, having glass transition temperature Tg and/or melting point Tm lower than 30°C. The radiation-curable oligomer is obtained through reactionof one or more carboxyl functional polyesters with one or more monoepoxides modified with a (meth)acrylic compound, and/or one or more polyepoxides and one or more α, β-unsaturated carboxylic acids.
EFFECT: obtaining coating compositions, having good chemical resistance, solvent resistance, scratch resistance and surface hardness coupled with improved flexibility, adhesion and scratching during flexure and fast deformation, improved corrosion resistance and improved heat resistance and good electrical insulation properties.
12 cl, 2 tbl, 29 ex
SUBSTANCE: composition contains the following in wt %: 5-80 polyester A copolymer obtained as a result of condensation with itaconic acid; 5-80 (meth)acrylate homopolymer and/or copolymer B consisting of more than 50 wt % monomers of formula I where R1 denotes hydrogen or methyl and R2 denotes an alkyl residue, an aliphatic or aromatic residue with 1-5 carbon atoms and 10-80 graft copolymer from type A polymer and type B polymer (polymer AB). Polyester A has a straight or branched structure with OH number from 5 to 150 mg KOH/g, and acid number less than 10 mg KOH/g, and number-average molecular weight 700-25000 g/mol. Content of itaconic links in the polyester copolymer per total content of polycarboxylic acids ranges from 0.1 mol % to 20 mol %.
EFFECT: invention enables to obtain well compatible polymer structures which do not contain styrene or derivatives thereof, based on a polyester graft polymethacrylate copolymer.
17 cl, 3 tbl, 9 ex
SUBSTANCE: composition for fixing wrapping articles contains A) 1-60 wt % of at lest one resin of α,β-unsaturated polyether based on at least one unsaturated mono-, di- or tricarboxylic acid and/or substance containing molecules with mono-, di- or tricarboxylic acid groups, at least one polyol, B) 0.1-80 wt % of at least one inorganic and/or an organic-inorganic hybrid component, having functional groups for reaction with components A) and C), where said hybrid components are polymers or colloidal solutions based on silicon, titanium or zirconium and oxygen atoms, which contain hydroxyl and/or alkoxy groups and/or hydroxyalkyloxy groups and/or organic fragments, which have epoxy and/or isocyanate and/or unsaturated groups, C) 2-80 wt % of at least one monomer and/or oligomeric unsaturated component, which is styrene, vinyl toluene, hexanediol dimethacrylate, butanediol dimethacrylate and/or (meth)acrylates of products of a polyaddition reaction of ethylene oxide with trimethylolpropane capable of reaction with components A and B, and D) 0-15 wt % conventional additives, where wt % is calculated relative the total weight of the composition.
EFFECT: excellent heat conductivity properties and high level of electrical insulation along with excellent adhesion and thermal stability.
6 cl, 1 tbl, 2 ex
SUBSTANCE: invention relates to aqueous polyacrylate dispersions for coating. The dispersion contains a hydrophobic polymerisation product with hydroxyl functional groups, a hydrophilic polymerisation product with hydroxyl functional groups and contains, as a solvent, cosolvents consisting of at least one hydrophobic, water-immiscible hydrocarbon whose initial boiling point (according to ASTM D86-05) ranges from 170°C to 250°C and final boiling point (according to ASTM D86-05) ranges from 200°C to 280°C.
EFFECT: invention is suitable for producing aqueous two-component polyurethane lacquer with considerably larger thickness of the bubble-free layer.
8 cl, 2 tbl, 6 ex