Composition for flowable fire-resistant materials

Patent metadata

Field	Value
Publication number	US-2021261463-A1
Application number	US-201917252523-A
Country	US
Kind code	A1
Filing date	Jun 25, 2019
Priority date	Jul 6, 2018
Publication date	Aug 26, 2021
Grant date	—

Abstract

A composition may be suitable for flowable refractory materials and include calcium aluminate cement, a filler, a plasticizer in the form of a copolymer comprising polyether side chains, and a retarder having at least one acid. An article may include such a composition.

First claim

1 . A composition suitable for a flowable refractory material, the composition comprising:
calcium aluminate cement; a filler; a plasticizer comprising a copolymer comprising a main chain and polyether side chains; and a retarder comprising an acid.

2 . The composition of claim 1 , wherein the main chain
(i) consists of at least one structural unit consisting of a carbon chain having at least 16 carbon atoms, or (ii) consists of at least one structural unit consisting of a (C—C—O) n chain, n being number of at least 5, or (iii) consists of at least one structural unit consisting an aromatic or a heteroaromatic system.

3 . The composition of claim 1 , wherein the polyether side chains of the copolymer are polyether side chains of structural unit (I)
*—U—(C(O)) k —X-(AlkO) z —W  (I),
wherein is a bonding site to the polymer, U is a chemical bond or an alkylene group comprising 1 to 8 carbon atoms and optionally substituted by at least one carboxyester, carboxyl, phosphono, sulfino, sulfo, sulfamido, sulfoxy, sulfoalkyloxy, sulfinoalkyloxy, and/or phosphonooxy, X is oxygen, sulfur, or NR 1 , k is 0 or 1, z is an integer, a mean of which, based on the polymer, is in a range of from 3 to 300, Alk is independently C 2 -C 4 -alkylene, W is H, a C 1 -C 6 -alkyl radical, an aryl radical, or or Y—F, Y is a linear or branched alkylene group comprising 2 to 8 carbon atoms and optionally bearing a phenyl ring, F is a nitrogen-bonded 5- to 10 membered nitrogen heterocycle optionally comprising, as ring members, in addition to the nitrogen atom and carbon atoms, 1, 2, or 3 additional oxygen, nitrogen, and/or sulfur, where the nitrogen ring members optionally comprise a group R 2 , and 1 or 2 carbon ring members optionally form a carbonyl group, R 1 is H, C 1 -C 4 -alkyl, or benzyl, and R 2 is H, C 1 -C 4 -alkyl, or benzyl.

4 . The composition of claim 1 , wherein the copolymer comprises carboxyester, carboxyl, phosphono, sulfino, sulfo, sulfamido, sulfoxy, sulfoalkyloxy, sulfinoalkyloxy, and/or phosphonooxy group.

5 . The composition of claim 1 , wherein the copolymer is a polycondensation product comprising
(II) a structural unit comprising an aromatic or heteroaromatic system and the polyether group, and/or (III) a phosphated structural unit comprising an aromatic or heteroaromatic system.

6 . The composition of claim 5 , wherein the structural units (II) and (III) have formulae
A-U—(C(O)) k —X-(AlkO) z —W  (II),
wherein A is independently an optionally substituted aromatic or heteroaromatic compound comprising 5 to 10 carbon atoms in the aromatic system, further radicals as defined for structural unit (I);

wherein
D is independently an optionally substituted aromatic or heteroaromatic compound comprising 5 to 10 carbon atoms in the aromatic system,
wherein
E is independently N, NH, or O,
m is 2 if E is N and m is 1 if E is NH or O,
R 3 and R 4 are independently a C 1 to C 10 -alkyl radical, C 5 - to C 8 -cycloalkyl radical, aryl radical, heteroaryl radical, or H,
b is independently an integer in a range of from 0 to 300.

7 . The composition of claim 1 , wherein the acid comprises hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid, citric acid, sulfonic acid, and/or metal salt.

8 . The composition of claim 7 , wherein the metal salt is present and comprises an aluminum salt.

9 . The composition of claim 7 , wherein the acid is a sulfonic acid of formula (VII)
R 17 —(CH 2 ) p —SO 3 M a   (VII),
wherein R 17 is a C 1 -C 20 -alkyl radical, C 6 -C 10 -aryl radical optionally substituted by one or more C 1 -C 20 -alkyl radicals, NR 18 R 19 , or a substituent of formula (VIII),

R 18 and R 19 are independently H or C 1 -C 20 -alkyl,
R 20 and R 21 are independently H or C 1 -C 20 -alkyl,
V is —O— or —NH—,
R 22 is H or methyl,
p is a number in a range of from 0 to 10,
M is H, a metal cation, or an ammonium cation, and
a is 1 or 1/valence of the metal cation.

10 . The composition of claim 9 , wherein the acid is a sulfonic acid of formula (VII), wherein
R 17 is an unbranched C 1 -C 2 -alkyl radical or NR 18 R 19 , R 18 and R 19 are H, R 20 and R 21 are methyl, W is —NH—, R 22 is H, p is a number in a range of from 0 to 2, and M is H.

11 . The composition of claim 1 , comprising, based on total composition weight:
the calcium aluminate cement in a range of from 1.0 to 20.0 wt. %, the filler in a range of from 60.0 to 98.99 wt. %, the plasticizer in a range of from 0.01 to 3.0 wt. %; and the retarder in a range of 0.01 to 5.0 wt. % from.

12 . The composition of claim 1 , wherein the filler is aluminum oxide.

13 . The composition of claim 1 , which is free from boron.

14 . The composition of claim 1 , comprises Portland cement in an amount of less than 3.0 wt. %, based on total composition weight.

15 . An article, comprising:
the composition of claim 1 .

16 . A flowable refractory material, comprising:
the composition of claim 1 .

17 . A refractory article, comprising:
the composition of claim 1 .

Assignees

• Basf Se

Inventors

• Faerberboeck Adolf
• Wutz Konrad
• Assmann Alexander
• Gaedt Torben

Classifications

• C04B24/2647

  containing polyether side chains · CPC title

• C04B24/16

  Sulfur-containing compounds · CPC title

• C04B24/246

  containing polyether side chains · CPC title

• C04B2111/28

  Fire resistance, i.e. materials resistant to accidental fires or high temperatures · CPC title

• C04B14/303

  Alumina · CPC title