(57) Abstract:Usage: for painting metal, plastic, wood and other surfaces, used indoors and outdoors. The inventive anti-corrosive composition contains a foaming agent is a mixture of urea-formaldehyde resin and copolymer solution of an alkyd resin with methylmetacrylate in the ratio of 1:0.25 to 0.5 to 100 wt. 'clock, acid curing agent 5 - 10 wt.h., organic solvents 140 - 170 wt.h. table 2. The invention relates to the field of production of anticorrosive paint formulations intended for painting of metal, plastic, wood and other surfaces, used indoors and outdoors, in various industries, mainly in the furniture and automotive.Known anticorrosive composition, which is a suspension of soot in the gas mixture of urea-formaldehyde and alkyd resins in organic solvents (brand MCH-277, TU 6-10 - 1299-77).The coating on the basis of the specified structure also lacks luster.Closest to the claimed is protivore, modified derivatives of triazine 100
Alkyd resin 100
Polymethylvinylsiloxane 0,04 4,6
Acid compound, toluensulfonate 10 46
Organic solvent (Ed. mon. USSR N 1669956) else
The coating on the basis of the described composition is insufficiently high Shine.In addition, the resulting coating does not have a sufficiently high resistance, low resistance to static action of water and gasoline, and also atmosferostojkostju.The technical result, which provides the invention, is expressed in the increase of gloss.The achievement of the technical result is ensured by the fact that the anticorrosive composition comprising a foaming agent on the basis of urea-formaldehyde resin, an acid curing agent and organic solvents, as the foaming agent comprises a mixture of urea-formaldehyde resin and copolymer solution of an alkyd resin with methylmetacrylate in the ratio (on a dry basis) 1:0,25 0,5 in the following ratio, wt.h:
The foaming agent ( on a dry basis) 100
Acid compound 5 10
Organic rivotrilprescripiton made as follows: in disolver with a high-speed stirrer (n 1500 rpm) download urea-formaldehyde resin was added with stirring a solution of the copolymer alkyd resin with methylmetacrylate; the mixture is then heated to a temperature of 60 70oC and stirred at this temperature until complete dissolution of the mixture. The resulting mixture was cooled and filtered.The solution of copolymer alkyd resin with methylmetacrylate in organic solvents (for example, type AC-0133, THE 6-10-1319 - 88) is a colorless or yellowish liquid with a nominal viscosity of 80-110 (viscometer VZ-246 with the nozzle diameter of 4 mm at 205oC) and mass fraction of non-volatiles 502%
A mixture of urea-formaldehyde resin and copolymer solution of an alkyd resin with methylmetacrylate is a sticky transparent liquid colorless to light yellow color with a nominal viscosity by viscometer VZ-246 at a temperature of 205)oC 55 to 85 C; the content of non-volatiles 48 52 wt.The composition also contains:
acid compound of phosphoric acid (GOST 10678 - 77), p - toluensulfonate (TU 6-09-3668-77), hydrochloric acid (GOST 857-88), and others;
organic solvents xylene (GOST 9410-78); ethyl cellosolve (GOST 8313-76), butanol (GOST 5208-81), solvent (GOST 1928-79) and others.In addition, the composition may contain plasticizers, pigments, additives target.In table 1 presbytes with acid curing agent and optionally plasticizers, pigments, targeted supplements.The composition applying by conventional spray and lachenalia at ordinary temperature.Below is the table 2 test results of the coating based on the proposed composition in comparison with the coating on the basis of the prototype.As follows from the data presented in the table, the floor on the basis of the proposed composition has a high gloss, high light fastness, resistance to static action of water and gasoline, and high weather resistance (in comparison with based coating composition of the prototype). Anticorrosive composition comprising a foaming agent on the basis of urea-formaldehyde resin, an acid curing agent and organic solvents, characterized in that as the foaming agent contains a mixture of urea-formaldehyde resin and copolymer solution of an alkyd resin with methylmetacrylate in the ratio of 1:0.25 to 0.5, and in the following ratio, wt.h.The foaming agent (on a dry basis) 100
Acid compound 5 10
Organic solvents 140 a
FIELD: strain-sensitive brittle coats for determination of strain and stresses in members of oil and gas chemical equipment and pipe lines.
SUBSTANCE: proposed coat contains resorcinal-formaldehyde resin CF-282 with addition of carbamide-formaldehyde concentrate CFC-85; used as hardening agent of liquid carbamide-formaldehyde concentrate is aqueous solution of formalin, ethylene glycol and carboxymethyl cellulllose and hexamethylene-tetramine; 100 parts by mass of resorcinal-formaldehyde resin contain the following components, %: carbamide-formaldehyde concentrate CFC-85, 35-50; hardening agent, 22-25; hexamethylene-tetramine, 3-6.
EFFECT: enhanced resistance of coat to aggressive media.
2 cl, 1 tbl, 4 ex