SU587141A1 - Compound - Google Patents

Description

(54) MASTICS

I

The invention relates to compositions of mastic for roofing and hydro-, vapor-eole constructions.

Known mastic, including bitumen / mineral filler, plasticizer, solvent, polyvinyl chloride and antiseptic l. Its disadvantage is small: concrete to concrete (up to 2 kg / cm 2) and insufficient frost resistance (up to -20 ° C).

Closest to the invention by its technical essence and (the effect obtained is mastic, bitumen bitumen, modifier (coal tar), synthetic rubber, filler and solvent t2l.

It has an increased temperature range of plasticity compared to bitumen-polyvinyl chloride mastic, but its cold and heat resistance do not allow this mastic to be used in all climatic zones of the USSR.

The aim of the invention is to reduce the plasticity interval, increase adhesion to concrete and reduce mastic.

This is achieved by the fact that the mastic includes Bitumen, modifier, syn2

Tetic rubber, filler and solvent, contains as a modifier a heavy pyrolysis resin containing condensed aromatic hydrocarbons b9-: 79% and a boiling point of 65 ° C; as synthetic rubber - substandard butyl rubber with a content of the main substance 70-80% oxidized rubber 1525% and additionally - substandard dichloropropane with a content of 2,3 dichloropropane 50-60% and a boiling point of 45 s, as well as substandard trichloropropane with a content of the main substance of 33-35%, boiling point 45 ° C and a density of 1.34 g / cm in the following ratio of components, wt.%:

Bitumen 43-44 Filling. 10-12 T of the desired pyrolysis resin11-12

Substandard

butyl rubber 1.9-2.3 Solvent 6.1-6.7 Unconditioned dichloropropane 16-22. Unconditioned. trichloropropane 6-7 Asbestos copja can be used as a filler, and 6eji3HH, kerosene, toluene / xylene, etc. can be used as a solvent. Rubber is introduced into the composition as a solution in the entire amount of solvent. Unqualified butyl rubber contains, in mass%: Rubber 70-80 Old oxidized rubber 15-25 Chalk, oil, etc. — D 5 5 T pyrolysis resin (TU6-0117-02-72) - low boil flammable liquid with a density of 1 , 04 g / cm, the temperature of the distillate is 45 ° C, the initial boiling point is 6583 ° C, distilled at up to 10% of the volume, and contains no more than 3% water. It consists of condensed aromatic hydrocarbons - naphthalene, anthracene, phenanthrene (69-79%) and benzene (18-30%). Substandard dichloropropane (light fraction) - colorless liquid with density 1.13 g / cm, temperature. Spikes, boiling point 45s, contains,%: 2,3-dichlopropane, epichlorohydrin 7-th, allyl chloride 3-5 and water 28-30 . Subconditioned trichloropropane is a colorless liquid with a density of 1.34 g / cm, teratra boiling start temperature 45 ° С, contains in its composition,%: trichloropropane 33--34, dichlorohydrin 28-30, allyl chloride and its attendant impurities 25-28, ethers and other heavy impurities. The method of making mastic is as follows. With continuous stirring, dichlopropane, trichloro propane, pyrolysis resin, butyl rubber solution and small doses of asp are used in the mixer.

Thus, mastic has a wide range of plasticity and improved adhesion to concrete. Oia can be used for the device be 10 vt tu in from in on the axis in f x n m n

roofs and hydro-, vaporization of structures in climatic regions of the country with variations in seasonal temperatures from -40 to. t-humidity not more than 5%. After 14 minutes of mixing, the components of the t d dehydrated bitumen with temperature. 150-1 lbs / s and mixed again for 10 g-15 min. The finished mastic of the mixer is pumped over the akopitel, and from there to the automotive transducers and sent to the construction sites. The supply of mastic to the workplace is carried out by a gear pump, and the application to the prepared base is sprayed with air by a hole in one or two layers in both one and half a mountain than the condition. After evaporation of the solvent, tic forms an elastic monolithic coating. Composition 1 mastic, wt.%: Bitumen BN- | U43 Asbestos 7 grade 10 T iron pyrolysis resin11 Unqualified butyl rubber in white alcohol (23% concentration) 8 Unqualified trichloropropane Unmatched dichloropropane 22 Composition 2 mastic, mass%: Bitumen BN -U44 Asbestos 7, grade 12, T, pyrolysis, resin, 12 Unqualified butyl rubber in gasoline (25% concentration) 9 Unqualified trichloropropane7 Unqualified dichloropropane 1 b The properties of mastics are shown in the table.

Claims (2)

Invention Formula Mastic, including bitumen, modifier, synthetic rubber, filler and solvent, in order to expand the plasticity range, increase adhesion to concrete and reduce mastic, as a modifier heavy pyrolysis resin containing condensed aromatic hydrocarbons 69- 79% and an initial boiling point of 65 ° C; as synthetic rubber, substandard butn rubber with a basic substance content of 70-80%, oxidized rubber of 15-25%, and additionally substandard dichlorprop n with the content of 2,3-dichloropropane 50-60% and a boiling point of 45 ° C, as well as substandard trichloropropane with the content of the main substance ZZ-ZB, boiling point 45 ° С and density 1.34 g / cm in the following ratio of components, wt.% Bitumen 43-44 Filler 10-12 T pyrolysis resin 11-12 on resin Unqualified butyl rubber 1,9-2,3 6,1-6,7 Unqualified solvent 16-22 dichloropropane Unqualified 6-7. trichloropropane Sources of information taken into account in the examination 1, USSR Author's Certificate No. 336302, cl. From 04 To 25/00, 1972. 2. Reznichenko P. T. and others. Mastic in construction. Dnipropetrovsk, ed. Promin, 1975, pp. 92-93.