SU91571A1 - The method of obtaining thermosetting binding resins and adhesive compositions for cold forming, hot pressing or gluing - Google Patents

Description

A known method for producing thermo-reactive binding resins and adhesive compositions by condensation of petroleum sulfonic acids with aldehyde in the presence of aniline.

The proposed method differs from the well-known fact that salts of ligonosulfonic yislot are first treated with hydrochloric acid solutions, aniline ic condensation products with formmaldehyde, and then mixed with high molecular weight sulfonic acid 1M; Phenol sovvdest.no with TCpneiBaMiH, etc.

To accelerate the curing of the resins in sulfonic acids, hexamethylentetramin or a mixture of aMMiHaxa and formalin is introduced in ratios which are not equivalent to form hexa | methylenemetra: in: a.

The preparation of thermosetting binder resins or adhesive compositions according to the proposed tcnoco6y is carried out by scrubbing.

To 500 weight. Part of a 10% -: solution of a mixture of salts of lignosulphonic acid, (sulphite or bard) at 80-90 ° C is added with stirring to 60-65 weight. including a solution of anhydroformaldehydan.in in hydrochloric acid containing 0.1 g of angi (droformaldehydaniline and 0.05-0.07 g of PS1 in lc. and the precipitated yellow solid precipitate is decanted or filtered and washed with water until slightly acidic or neutral, and then dried at 50-60 °. A yield of 55% to 60% of the lignosulphonic salts contained in the liquor solution or bar | Dy is obtained.

A resin based on the precipitate separated from the “bar” (using an anhydroformaldehydaniline solution and petroleum sulfonic acids) is obtained in the following samples.

10 wt. including petroleum sulfonic acids with an average molecular weight of 250-300 are fused with 10 wt. including finely ground dry powder, isolated from bards, when heated ;. up to 60-65 ° for 10-15 minutes

The image of 1et; with adhesive resin black. The Kramer-Sarnov resin softening temperature is 53-54 °, the curing rate on the tile at 160 ° is approximately 1-2 minutes.

In order to speed up the hardening of amol and obtain neutral products, 15-20% hexadecid are introduced into the oil sulphacid in the ratios required for the formation of hydroxymethylantetra and a.

The resin obtained as a result of fusion, has a temperature of p 5zl1; (gcheN | OYa 80-90 ° and dissolves in the cold in acetone, benzene, b6b || (not; partly pacTBopwiMia IB with ethanol and water. Polyshma Omolite is not found in any of the list of solvents / solvents and in pacTBOpiHiMa.

Binding or adhesive formulations can be obtained by mixing the selected (aniline-formaldehyde-lignosulfone derivative with aqueous solutions of surface and t-1 and other cyclic sulphonic acids. The resulting resin emulsions can be used as the thermal grease and one 10-glue; plastics, manufacturing cores: etc.

For the preparation of press-forming forming compositions, it is possible to use amola obtained by the proposed method with mineral or organic material and an aggregate mm or, to form a complex resin, which plays the role of a binder during the subsequent process (for pressing or shaping your own body).

In the production of resinous resins, phenol is not required.

Subject invention

Claims (2)

1. A method for producing thermo-reactive super resins and adhesives for cold forming, hot waxing or splicing by condensation of petroleum sulfonic acid and aldehyde | dagMI in the presence of aniline, characterized by the fact that salts of lignosulfonic acids are first treated with hydrochloric acid the products of condensation of aniline with formaldehyde, and 3: then it is fused with high molecular weight sulphonic acids 1, measures, and nesht sulphonic acids; sulfonic acid, gluchennyh aulirovanii1Iam phenol sogamestnOn with terpenes, etc. 2. Acceptance of the method according to claim 1, is different in that, in order to accelerate the curing of amol, hexamethylantetramine or ammonia is introduced into the sulfoacid in the ratios required for the avium hexamethylenetetramne image.