DE2216825B1 - Process for the production of masses containing tar - Google Patents

Description

The invention relates to a method of manufacture a tar-containing mass based on tars and epoxy resins, which contains one or more tars, which are subjected to chemical treatment. The mixture obtained in this way enables the production of coatings for buildings and of industrial floor coverings, of road surfaces for Roads and the like

Substance compositions based on empty. Dicpoxy resin and hardening agents have long been known. Efforts were made to reduce the viscosity of coating slips by adding non-inactive diluents such as spruce or pine oil or tap oil to diminish. Unfavorably, the products obtained are brittle in the cold and brittle in the cold Warmth soft. The solution is therefore to mix in reactive, mono- or bifunctional Oxydic diluents, such as butyl glycidides. epoxidized phenols, dicpoxidized llex.idiol. In this lall were the surviving strangers generally more stable with the passage of time: their mechanical properties, however, remained within a wide range Unsatisfactory temperature range. Ίο

The subject of the German O. Triepoxydc are included as a highly reactive diluent, and which at 10 and 85 percent by weight of the total mass ^h 5 have good physical and mechanical properties within an extensive range of temperatures.

There are already curable mixtures, especially molding compounds, known that are made from polyepoxides and special amines exist as hardeners, which act as the main structural element have a bishydantoin grouping (German OlTenlegungsschnft 1 9M 466). These known molding compounds consist practically of the curable epoxy resin and exclusion wedge the hardener · it is only mentioned that it is additionally Can contain customary extenders, fillers and thinners, including numerous customary ones Materials also include coal tar and bitumen on the basis of this general information However, there was no conclusion that tar was retained. Mass possible, the tar or tar mixture and em or more Aryldiepoxyde in a very special And in which tar must have very special properties.

The possibility has now been found. Tar emc: subject to chemical treatment, which at the same time the use of the masses due to cü .. · reduced viscosity of the tar and the mechanical properties of the products improved.

The invention relates to a method /ι.· Production of a tar-containing mass by mixing a tar or a mixture of tar with one or more aryl diepoxides in a ratio of tar to diepoxide between 0.3 and ·! as well as with thinners and hardeners. This method is characterized in that a Te ··· or tar mix is used, which was previously added to a ·. ·· Temperature from 50 to 100 C. preferably 80 1 in the presence of at least one catalyst du ·.:, Treatment with an epihalohydrin in a quantity of 0.5 to 2 molar equivalents of epihalohydrin: i hydrui. based on the hydroxyl group content of deTeers, has been chemically modified.

The most frequently used epihalohydrin is epichlorohydrin: however, epibiomhydrin and epijodhydrin can also be used ^; n can be used.

The tars modified in this way make it possible to produce misses that ooHe Aryldicpoxy resins. like ^ 2.2-bis (4-hydroxyphcnyl) -pivpandiepoxyd in a ratio of tar to diepoxyd between 0.3 and 4. Diluent, such as dicpoxidized hexanediol. in an Ante.il between 5 and 15 percent by weight of the end product and hardening agent. like aminoamide c. contain.

It is also possible to use all the masses Add additives such as surface active agents. Adhesion promoters, active or non-active 1 lubricants. Pigments. Aggregates.

In the following, for the purpose of clarifying the Invention examples given.

Examples 1 to IO

L in tar obtained from a tar pitch KS 38 41 (90 parts by weight) and an Anthiacenö] (K) Ckwasstieilen) been reconstituted sn.ii was at an I cmperalur of 80 C with epichlorohydrin in Treated the presence of various catalysts. The masses produced are in the following Table summarized il. The reference: Jeten Abki'ivungen have the following meaning:

DME: dimethylformamide.
T) MP K): Dimethylaminomelhylplienol.
DMP 30: Ί ris (dinieihylaminomethyl) phenol.

Table 1

1 500 g Epi- Ante ! of the catalyst DaULT the tar 2 500 g chlorine- Treat 3 500 g hjdrin lung 4th 500 g 2.5 g DMF (Hours I 5 500 g 25 g 2.5 g DMF + water 1 6th 500g 25 g 2.5 g DMP 30 1 7th 500g 25 g 2.5 g Triethanolamine 1 8th 500g 25 g 2.5 g BF ₃ 1 9 500 g 25 g 2.5 g Fyridine 1 IO 500 g 25 g 2.5 g DMP 10 1 25 g 2.5 g DMP 10 1 25 g 2.5 g DMP 10 7th 25 g 2.5 g DMP 10 22nd 25 g 28

The tars thus treated became material compositions using a diglycid ether of 2,2-bis- {4-hydroxyphenyi) -propane, which with the oxidized hexadiol was diluted. These compositions of matter or masses were then with the help of an amidoamine obtained by the reaction of one mole of the dimer of linoleic acid is obtained with 2 moles of triethylenetetramine, hardened.

The total mass wu.-de shed at 70 ⁰ C. The plates obtained were de-heated after 48 hours and then conditioned for 2 days at 50 ° C and 1 day at 20 ° C.

The tensile strength was then tested; the values obtained are in Table 2 listed.

Table 2 Dimensions Share of
drnxyphen \ D-
propane-diepowd
(Weight
percent I Share of
Hexanediol
diepo \\ d
(Weight
percent I tar
iGevichlv-
procept! 63 63 63 Harder
(Weight
percent) Zuglestigk
at 20 C express ikgcnr)
at 50 C 1 11.8 7th 63 7 63 7 63 18.2 33 5 2 11.8 7th 03 7 63 7th 18.2 38 5 3 7 6-i 7 63 18.2 44 6th 4th 7 j 63 7th 18.2 46 5.5 5 7th 18.2 42 5.5 6th 18.2 37 5 7th 18.2 53 7th 8th 18.2 53 7th 9 18.2 53 7th 10 18.2 53 7th Untreated
Comparative sample 18.2 25th 3.5 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8

This table clearly shows the advantages. those by chemically modifying the tar be achieved. Especially when using Dimethylaminomelhyiphenol as a catalyst the tensile strength at 20 C as well as at 50 C doubles! '.. at a temperature at which the properties of the previously known compositions are generally poor.

so

1 eer No. 7 6λ '! · - <ι

2.2-bis (4-hydroxyphenyl) propane

diepoxyd 11.8 "0

Diepoxidized hexanediol 7%

Amidoamine. obtained by reacting one mole of dimeric
Linoleic acid with 2 moles of triethylenetetramine 18.2%

Application example

The following is an example of the practical use of the compositions prepared according to the present invention given which contain a modified in the manner according to the invention tar.

A protective coating of the following composition is applied to a previously sanded sheet metal in a thickness of 8 (X) gm ^2:

A coating is then applied by applying a mixture of 3 parts by weight of the above-mentioned composition and 8 parts by weight of silicon dioxide to a thickness of 18 kg m ² on the treated sheet metal plate.

The plate is then attached to a clonclag and driven on for 3 days after its manufacture exposed by automobiles. After 7 months

The coating was not damaged in any way found, although the temperatures fluctuated between -20 and ■ + όΟ L '.

Claims (5)

Patent claims: 1. A process for the production of a tar-containing mass by mixing a tar or a mixture and tars with one or more aryl diepoxides in a ratio of tar to diepoxide between 0.3 and 4 as well as diluents and hardeners, characterized in that a tar or a tar mixture i & is used which has previously been chemically modified at a temperature of 50 to 10O ⁰ C in the presence of at least one catalyst by treatment with an epihalohydrin in an amount of 0.5 to 2 molar equivalents of epihalohydrin, based on the hydroxyl group content of the tar. 2. The method according to claim 1, characterized in that the chemical modification of the Tar has been made at a temperature of 80 ° C. 3. The method according to claim 1 or 2, characterized in that the tar or tars have been modified by treatment with epichlorohydrin. 4. Process according to Claims 1 to 3, characterized in that the tar or tars in the presence of Dnnelhylaminomethylphenoi modified wor ^ n. 5. Use of a composition containing tecr produced according to Claims 1 to * for production of hardened coatings for timpani. Seals or connections, road surfaces for Roads or runways. 35