CS247753B1 - Material especially for roof covering - Google Patents

Abstract

The subject of the invention is a substance, in particular for roofing, usable both as a roof covering cladding, as well as for gluing waterproofing membranes, both rubber and plastic, optionally as a sealing and jointing material. Mass replaces asphalt products. SUMMARY OF THE INVENTION is that matter consists of 13 to 50 parts by weight of waste pitch remaining vacuum distillation in the production of dimethyl- terephthalate, 3 to 15 wt. parts softened and 8 to 25 parts by weight of a vinyl chloride copolymer with vinyl acetate. Waste pitch contains up to 75% by weight of carbon; 25 weight percent oxygen and 4 to 5 weight percent percent hydrogen. The plasticizer may be advantageous by dibutyl phthalate, dioctyl adipate or aliphatic light oils with a viscosity index of 40 to 50. Copolymer % vinyl chloride contains 8 to 30 wt. percent vinyl acetate. Furthermore, it is advantageous for this mass Add 0.5 to 16 wt. percent stabilizer, for example aluminum powder or zinc oxide.

Description

The invention relates to a material, in particular for roofing materials, which can be used both as a roof covering and for bonding waterproofing membranes, both rubber and plastic, and possibly as a sealing and jointing compound.

At present, asphalt-based materials are used most frequently for roofing materials, the price of which is constantly rising, becoming a scarce raw material, and in some cases does not even meet the physical and durability requirements of the roofing, which is extremely cyclically stressed by weather conditions. Asphalt processing and preparation for this purpose is very energy intensive.

The processing of plastics into prefabricated strips for floor coverings or sheets for external waterproofing results in a considerable contraction of these materials, whether in a shorter or longer period, which in practice precludes the use of these materials in a number of areas, particularly in roofing and waterproofing.

Also in the field of gluing, especially waterproofing coatings, for example of rubber and plastic foils, there is a lack of materials affordable with satisfactory physico-mechanical properties that the product retains for the necessary lifetime of the waterproofing coat. There are also problems with the universality of adhesives for various substrates such as concrete, asphalt roofing strips, sheet metal, PVC-like plastics, glass and the like.

These drawbacks are eliminated by the mass, in particular for the roof covering according to the invention. The essence of the invention is that the mass consists of 13 to 50 wt. parts of acetone, toluene or a combination thereof, from 10 to 75 parts by weight of the waste pitch remaining in the vacuum distillation to produce dlmethylterephthalate, 3 to 15 parts by weight of the plasticizer and 8 to 25 parts by weight of the resin; parts of copolymers. The waste pitch contains up to 75 wt.% Carbon, 20 to 25 wt.% Oxygen, and 4 to 5 wt.% Hydrogen. The plasticizer may conveniently be formed by dibutyl phthalate, dioctyladipate or aliphatic light oils having a viscosity index of 40 to 50. The vinyl chloride-vinyl acetate copolymer contains 8 to 30 weight percent vinyl acetate. It is further preferred to add 0.5 to 16% by weight of a stabilizer, for example aluminum powder or zinc oxide, into the composition.

The material according to the invention is based on waste raw materials, which are mostly not further processed, in many areas completely replacing asphalt products and in some properties the material according to the invention even surpasses the asphalt products. This material does not contract even after a very long period of time, which makes it ideal for roofing and waterproofing. However, it has proven itself as a very good adhesive for insulation purposes and its properties within the range of the given recipe also make it suitable for use as grout.

The composition according to the invention exhibits heat recovery even after several years and high adhesion to all kinds of substrates, including concrete, plastics and glass. An exemplary composition according to the invention is described in the following examples.

Example 1

The mass consists of 660 kg of acetone, 1600 kg of waste pitch from the production of dlmethylterephthalate, 340 kg of dibutyl phthalate, 425 kg of vinyl chloride-vinyl acetate copolymer and 50 kg of aluminum powder. This material exhibits the following physicochemical properties. Density 1,1 to 1,2 kij 'per liter, brittleness after aging to -10 ° C, heat stability after aging - permanent up to plus 80 ° C and short-term up to plus 90 ° C. Shrinkage of film heated at 70 ° C for 7 days 1 percent and frost resistance to -25 ° C. Flash point min. plus 150 ° C.

Example 2

Another material already tested is a composition having the same composition as in Example 1 with the addition of an additional 20 percent of dibutyl phthalate. This material is intended especially for bonding waterproofing coatings made of rubber and plastic foils and is intended for performing these works in winter.

Claims (2)

SUBJECT OF THE INVENTION A composition, in particular for roofing materials, characterized in that it consists of 13 to 50 parts by weight, parts of acetone, toluene or a combination thereof, 10 to 75 parts by weight of the waste pitch remaining in vacuum deduction for dimethylterephthalate production and containing 70 to 75 parts. wt. % carbon, 20 to 25 wt.% oxygen, and 4 to 5 wt. % of hydrogen, from 3 to 15% by weight, parts of a plasticizer, for example dibutyl phthalate, dioctyladipate or aliphatic light oils having a wavelength index of 40 to 50 and 8 to 25 parts by weight of a copolymer of vinyl chloride and vinyl acetate containing 8 to 30% by weight; percent vinyl acetate. Compound according to claim 1, characterized in that it further comprises from 0.5 to 16 parts by weight of a stabilizer, for example aluminum powder or zinc oxide.