RU2001063C1 - Composition for foamed plastic - Google Patents

Description

Ethylene glycol 8.0.

To prepare this composition, three of its last ingredients (benzenesulfonic acid, phosphoric acid and 5 ethylene glycol) are initially mixed with each other in appropriate weight proportions. This mixture was incubated for 24 hours at room temperature (20-25 ° C). Upon reaching the indicated duration of exposure of the mixture, the condensation product of acetone-phenol wastes is separately mixed with urea and then with the adduct of ethylene oxide and alkyl phenols in the above ratio, after which the required amount of aluminum powder is introduced into the resulting mixture. Then, both parts of the composition obtained by the described method are mixed with each other and immediately the resulting mass is poured into the mold, where it foams due to the liberated by mixing these two parts with hydrogen gas. The resulting mass was allowed to cool to room temperature and hardened. after which the formed foam 25 is removed from the mold and then directly used for its intended purpose.

Some characteristics of the resulting foam are presented in the table.

Example 2. Perform according to the General 30 flow chart of example 1. but to obtain a foam take a composition with the following ratio of ingredients, wt.%:

Condensation Product35

formaldehyde-free wastes of acetone-phenol production 60.0

Urea 5.0

Ethylene Oxide Adduct 40

and alkyl phenols 5.0

Aluminum powder 0.7

Benzenesulfonic acid 11.0 Orthophosphoric acid 12.3

Ethylene Glycol 6.0. 45

The indicators formed on the basis of this foam composition are presented in the table.

Example 3. Carried out according to the scheme of example 1, but to obtain a foam 50 use the composition, wt.%: The condensation product of waste acetonophenol production

55

formaldehyde 70.0

Urea 4.0 Ethylene Oxide Adduct

and alkyl phenols 4.0

Aluminum powder 0.5

Benzenesulfonic acid 8.0

Phosphoric acid 9.5

Ethylene glycol 4.0. Example 4 (prototype). A composition of the following composition is prepared, wt.%: Condensation product of wastes of acetonophenol production

formaldehyde 6.0 Ethylene oxide adduct

and alkyl phenols 3.0

Aluminum powder0.5

Benzenesulfonic acid 15.5

Phosphorist Acid 2.0 Urea-Formaldehyde Resin 19.0

The composition and the foam based on it are prepared by simple mechanical mixing at room temperature of the indicated amounts of ingredients and pouring the resulting mixture into molds. After hardening, the resulting foam is removed from the mold and then used as intended.

The indicators formed on the basis of this foam composition are also presented in the table.

As can be clearly seen from the data given in the table, the use of the claimed composition allows one to significantly (from 15–20%) increase the foam strength compared to that for a similar material obtained on the basis of composition (2) (from 0.42 MPa to 0.50– 0.52 MPa). Moreover, not only the qualitative, but also the quantitative composition of the composition is essential; deviation of the amounts of the ingredients composing the composition from the stated limits leads to a decrease in the mechanical strength of the foam, as well as the exclusion of at least one of these ingredients (urea, phosphoric acid and ethylene glycol) from its composition.

(56) Copyright witness of the USSR No. 328152, cl. C 08 J 9/06, 1968.

USSR copyright certificate No. 594135. cl. C 08 J 9/06, 1976.

Claims (1)

The claims COMPOSITION FOR PRODUCING FOAM PLASTIC,, Containing the product of condensation of wastes of acetone-phenol production with formaldehyde, an adduct of ethylene oxide and zlkephenols, aluminum powder and benzenesulfonic acid, characterized in that, in order to increase the strength of the foam, it additionally contains urea and ortho acid, ortho and ortho acid, ortho - lenglycol in the following ratio of ingredients, wt.%: Condensation product of wastes of acetonophenol production with formaldehyde Urea Adduct of ethylene oxide and alkyl phenols Aluminum powder Benzene sulfonic acid Orthophosphoric acid Ethylene glycol 50-70 4-6 4-7 0.5-1.0 8-13 9.5-15.0 4-8