# US 4,391,644 A · Shaped articles made from expanded minerals

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- Number: US 4,391,644 A
- Document ID: US4391644A
- Status: Granted
- Kind: A
- Application number: 06/341,233
- Filed: 1982-01-21
- Granted: 1983-07-05
- Earliest claimed: 1981-01-27
- Assignees: Hoechst Aktiengesellschaft
- Inventors: Peter Eckardt; Franz J. Voetz
- Web page: https://patentgrep.com/patent/US4391644A

## CPC

- C04B 28/34: containing cold phosphate binders
- C04B 20/1022: {Non-macromolecular compounds}
- C04B 2103/65: Water proofers or repellants
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE

## Abstract

Shaped articles made from expanded minerals obtained by treating a mixture of a hydrophobized expanded mineral and a calcium aluminate with an aqueous solution of aluminum phosphate, and subsequently consolidating it under the action of pressure and heat; the expanded mineral having been hydrophobized with a hydrophobizing agent consisting substantially of (a) a fatty amine of the formula ##STR1## in which R.sub.1 is C.sub.8 -C.sub.22 -alkyl, preferably C.sub.14 -C.sub.22 -alkyl, C.sub.14 -C.sub.22 -alkenyl or C.sub.8 -C.sub.22 -alkylphenyl, R.sub.2 and R.sub.3 each are hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.2 -C.sub.4 -alkenyl, phenyl or benzyl, and n is a number of from 0 to 4; (b) a fatty acid of the formula R.sub.5 CO(OCH.sub.2 CH.sub.2).sub.m OH or a fatty alcohol of the formula R.sub.6 (OCH.sub.2 CH.sub.2).sub.m OH in which R.sub.5 is C.sub.8 -C.sub.22 -alkyl, preferably C.sub.14 -C.sub.22 -alkyl or -alkenyl, R.sub.6 is C.sub.9 -C.sub.23 -alkyl, preferably C.sub.15 -C.sub.23 -alkyl or -alkenyl, and m is a number of from 0 to 2; and (c) a low molecular weight acid.

## Claims

### Claim 1

Shaped articles made from expanded minerals obtained by treating a mixture of a hydrophobized expanded mineral and a calcium aluminate with an aqueous solution of aluminum phosphate, and subsequently consolidating it under the action of pressure and heat; the expanded mineral having been hydrophobized with a hydrophobizing agent consisting substantially of
(a) a fatty amine of the formula ##STR3## in which R.sub.1 is C.sub.8 -C.sub.22 -alkyl, preferably C.sub.14 -C.sub.22 -alkyl, C.sub.14 -C.sub.22 -alkenyl or C.sub.8 -C.sub.22 -alkylphenyl, R.sub.2 and R.sub.3 each are hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.2 -C.sub.4 -alkenyl, phenyl or benzyl, and n is a number of from 0 to 4;
(b) a fatty acid of the formula
R.sub.5 CO(OCH.sub.2 CH.sub.2).sub.m OH
or a fatty alcohol of the formula
R.sub.6 (OCH.sub.2 CH.sub.2).sub.m OH
in which R.sub.5 is C.sub.8 -C.sub.22 -alkyl, preferably C.sub.14 -C.sub.22 -alkyl or -alkenyl, R.sub.6 is C.sub.9 -C.sub.22 -alkyl, preferably C.sub.15 -C.sub.23 -alkyl or -alkenyl, and m is a number of from 0 to 2; and
(c) a low molecular weight acid.

### Claim 2 (depends on 1)

The shaped articles as claimed in claim 1 manufactured with the use of from 2 to 25 weight % of monoaluminum phosphate, relative to the expanded mineral.

### Claim 3 (depends on 1)

The shaped articles as claimed in claim 1 manufactured with the use of from 10 to 50 weight % of aluminous cement, relative to the aluminum phosphate.

### Claim 4 (depends on 1)

The shaped articles as claimed in claim 1 manufactured from an expanded mineral treated with 0.3 to 3.5 weight % of the hydrophobizing agent.

### Claim 5

Shaped articles made from expanded minerals obtained by treating a mixture of hydrophobized expanded mineral and a calcium aluminate with an aqueous solution of aluminum phosphate, and subsequently consolidating it under the action of pressure and heat; the expanded mineral having been hydrophobized with a hydrophobizing agent consisting substantially of a hydrophobizing agent consisting essentially of a fatty amine of the formula ##STR4## in which R.sub.1 is C.sub.8 -C.sub.22 -alkyl, preferably C.sub.14 -C.sub.22 -alkyl, C.sub.14 -C.sub.22 -alkenyl or C.sub.8 -C.sub.22 -alkylphenyl, R.sub.2 and R.sub.3 each are hydrogen, C.sub.1 -C.sub.4 -alkul or C.sub.2 -C.sub.4 -alkenyl, phenyl or benzyl, and n is a number of from 0 to 4; and a low molecular weight acid; the molar mixing ratio of the fatty amine and the low molecular weight acid ranging from 10:1 to 1:10.