FIELD: chemistry.
SUBSTANCE: present invention relates to a chemical marker for concealed marking of substances, materials and articles, which contains a mechanical mixture of phthaleins, silca gel, carboxylic acid and weakly oxidised atactic polypropylene, characterised by that it further contains 3-(3'-methyl-4'-hydroxyphenyl)-3-(4"-hydroxyphenyl) phthalide of structural formula 
, with the following ratio of components, wt %: phenolphthalein- 0.5-28.0; o-cresol phthalein - 14.1-56.5; silica gel - 15.0-25.0; citric acid or oxalic acid- 2.0-4.0; weakly oxidised atactic polypropylene - 10.0-16.0; 3-(3'-methyl-4'-hydroxyphenyl)-3-(4"-hydroxyphenyl) phthalide - 8.0-39.3. The present invention also relates to a method of preparing a mixture of phenolphthalein homologues.
EFFECT: high output of 3-(3'-methyl-4'-hydroxyphenyl)-3-(4"-hydroxyphenyl) phthalide, which increases reliability of marking substances, materials and articles, reduces the probability of falsification of the marker and simplifies composition thereof.
2 cl, 5 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| CHEMICAL MARKER AND PREPARATION METHOD THEREOF | 2010 |
|
RU2461596C2 |
| PHTHALIDE-CONTAINING COOLIGOMERS FOR PRODUCING CROSS-LINKED PHTHALIDE-CONTAINING COPOLYMERS, PRODUCTION METHOD THEREOF (VERSIONS), PHTHALIDE-CONTAINING CROSS-LINKED COPOLYMERS BASED THEREON AS ENGINEERING POLYMERS | 2011 |
|
RU2463315C1 |
| CHEMICAL MARKER AND METHOD FOR PRODUCTION THEREOF | 2011 |
|
RU2489476C2 |
| OXIDIZED ATACTIC POLYPROPYLENE WITH THE POLAR FUNCTIONAL GROUPS, THE METHOD OF ITS PRODUCTION AND THE INSTALLATION FOR THE METHOD REALIZATION | 2005 |
|
RU2301812C1 |
| CO-OLIGOPHENOL-FORMALDEHYDE NOVOLACS, METHODS FOR PRODUCTION THEREOF (VERSIONS) AND CROSSLINKED COPOLYMERS BASED THEREON | 2014 |
|
RU2569310C1 |
| THERMOPLASTIC SEALING MATERIAL AND METHOD FOR ITS OBTAINING | 2006 |
|
RU2309969C1 |
| 3-PHENYL-3-[4'-HYDROXY-3', 5'-DI(HYDROXYMETHYL)-PHENYL]PHTHALIDE AS MONOMER FOR PRODUCING PHENOL FORMALDEHYDE PHTHALIDE-CONTAINING OLIGOMERS AND AS CURING AGENT FOR PRODUCING CROSS-LINKED PHTHALIDE-CONTAINING POLYMERS, PRODUCTION METHOD THEREOF, COMPOSITION BASED THEREON FOR PRODUCING PHTHALIDE-CONTAINING CROSS-LINKED POLYMERS AND PHTHALIDE-CONTAINING POLYMER | 2010 |
|
RU2425064C1 |
| METHOD FOR PRODUCING BITUMEN-POLYMER BINDER | 2016 |
|
RU2629678C1 |
| MARKER COMPOSITIONS AND METHODS FOR THEIR PRODUCTION AND USE | 2017 |
|
RU2787074C2 |
| ASPHALT-POLYMER BINDER | 2000 |
|
RU2181733C2 |
