Fluidizing compounds for hydraulic compositions

Patent metadata

Field	Value
Publication number	US-12503395-B2
Application number	US-202017786407-A
Country	US
Kind code	B2
Filing date	Dec 17, 2020
Priority date	Dec 17, 2019
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

Disclosed is a compound with the following formula (I):

as well as the use thereof, in particular as a chelating agent of positively charged ions, or as a fluidizing agent for hydraulic compositions. Also disclosed is a hydraulic composition comprising a compound with formula (I), at least one hydraulic binder, at least one aggregate, and water.

First claim

The invention claimed is:

1 . A compound with the following formula (I):

wherein:
M is chosen from the group consisting of H, alkaline and alkaline earth metals and + HNRR′ groups, R and R′ being chosen independently from each other from H, (C 1 -C 3 ) alkyl, either linear or branched, and alcohols in C 1 -C 3 , either linear or branched;
R 1 is chosen from the group consisting of H, A 1 and (C 1 -C 4 ) alkyl groups, either linear or branched, when A is described by formula (1) below, or, where A is described by formula (2) or (3) below, R 1 is chosen from the group consisting of H and (C 1 -C 4 ) alkyl groups, either linear or branched;
R 2 is chosen from the group consisting of H, OM, M being as defined above and from (C 1 -C 4 ) alkyl groups, either linear or branched;
A stands for:
a group A 1 with the following formula (1):

wherein:
n is an integer from 1 to 40;
m is an integer from 1 to 40; and
Z is chosen from the group consisting of:
 —CHR 3 —NH— groups, R 3 being chosen from the group consisting of H, COOH and (C 1 -C 6 ) alkyl groups, either linear or branched;
—C(═O)—NH— groups; and
—C(R 5 ) ═N— groups, where R 5 is H or Me;

* a group A 2 with the following formula (2):

wherein:
n is an integer from 1 to 40, preferentially from 1 to 31;
m is an integer from 1 to 40, preferentially from 1 to 31;
r is 0 or an integer from 1 to 6; and
M, R 1 and R 2 are as defined above in formula (I);

* a group A 3 with the following formula (3):

wherein:
n′ is an integer from 1 to 50;
the sum of m′+p′ varies from 1 to 6;
m′ is an integer from 1 to 5;
p′ is an integer from 1 to 5; and
M, R 1 and R 2 are as defined above in formula (I);
Z is as defined above in formula (1).

2 . The compound according to claim 1 , having the following formula (II):

wherein:
R 1 is chosen from the group consisting of H and (C 1 -C 4 ) alkyl groups, or stands for a group A 1 with formula (1) as defined in claim 1 ; and
M, R 2 , n, m are as defined in claim 1 .

3 . A hydraulic composition comprising:
the compound of claim 2 , at least one hydraulic binder, at least one aggregate, and water.

4 . The compound with formula (II) according to claim 2 , wherein:
R 2 is an OM group; n varies from 19 to 31; m varies from 3 to 10; and Z is chosen from the group consisting of:
—CHR 3 —NH— groups, where R 3 is chosen from the group consisting of H, COOH and (C 1 -C 6 ) alkyl groups, either linear or branched; and
—C(═O)—NH— groups.

5 . A hydraulic composition comprising:
the compound of claim 4 , at least one hydraulic binder, at least one aggregate, and water.

6 . The compound with formula (II) according to claim 4 , wherein R 1 is H or stands for a group A 1 with formula (1).

7 . A hydraulic composition comprising:
the compound of claim 6 , at least one hydraulic binder, at least one aggregate, and water.

8 . The compound according to claim 1 , having the following formula (III):

wherein:
R 1 is chosen from the group consisting of H and (C 1 -C 4 ) alkyl groups; and
M, R 2 , n, m and r are as defined in claim 1 .

9 . A hydraulic composition comprising:
the compound of claim 8 , at least one hydraulic binder, at least one aggregate, and water.

10 . The compound with formula (III) according to claim 8 , wherein R 1 is H and R 2 is an OM group and r is 0 or varies from 1 to 3.

11 . A hydraulic composition comprising:
the compound of claim 10 , at least one hydraulic binder, at least one aggregate, and water.

12 . The compound according to claim 1 , described by the following formula (IV):

wherein:
R 1 is chosen from the group consisting of H and (C 1 -C 4 ) alkyl groups; and
M, R 2 , n′, m′ and p′ are as defined in claim 1 .

13 . The compound with formula (IV) according to claim 12 , wherein:
R 1 is H; R 2 is an OM group; and Z is chosen from the group consisting of:
—CHR 3 —NH— groups, where R 3 is chosen from the group consisting of H, COOH and (C 1 -C 6 ) alkyl groups, either linear or branched; and
—C(═O)—NH— groups.

14 . A hydraulic composition comprising:
the compound of claim 12 , at least one hydraulic binder, at least one aggregate, and water.

15 . A chelating agent of positively charged ions comprising a compound according to claim 1 .

16 . A hydraulic composition comprising:
a compound according to claim 1 , at least one hydraulic binder, at least one aggregate, and water.

17 . A fluidizing agent for hydraulic compositions comprising a compound according to claim 1 .

18 . A admixture to hydraulic binders comprising a compound according to claim 1 , alone or in combination with at least one plasticizer and/or superplasticizer.

19 . A method to decrease the sensitivity to phyllosilicate clays of a hydraulic composition, comprising adding a compound according to claim 1 into said hydraulic composition.

20 . A method to decrease the sensitivity to alkaline sulfates in solution of a hydraulic composition, comprising adding a compound according to claim 1 into said hydraulic composition.

Assignees

• Chryso
• Saint Gobain Placo

Inventors

• Colas Antoine
• Froidevaux Vincent Etienne Claude
• LEISING FRéDéRIC

Classifications

• C04B2103/34

  Flow improvers · CPC title

• C04B2103/32

  Superplasticisers · CPC title

• C04B28/02

  containing hydraulic cements other than calcium sulfates · CPC title

• C04B40/0039

  Premixtures of ingredients · CPC title

• C04B2103/30

  Water reducers, plasticisers, air-entrainers, flow improvers · CPC title