Poly(ethylene glycol) geminal ester phosphate, use as additive in hydraulic compositions and compositions containing same

Patent metadata

Field	Value
Publication number	US-2016176759-A1
Application number	US-201414909640-A
Country	US
Kind code	A1
Filing date	Aug 1, 2014
Priority date	Aug 8, 2013
Publication date	Jun 23, 2016
Grant date	—

Abstract

The present invention relates to the technical field of hydraulic compositions, for example concrete and mortar compositions. More specifically, the present patent application relates to additives used in hydraulic compositions, to the compositions containing same, and also to the method for preparing these additives and to the various uses thereof.

First claim

1 . An additive for hydraulic compositions, the additive comprising a mixture of the compounds of the following formulas (I), (II) and (III):

wherein:
the groups (CH 2 —CH 2 —O) and (CH 2 —CH(CH 3 )—O) are arranged in blocks, alternately or randomly,
n, n 1 and n 2 , independently of one another, are integers which vary between 1 and 150 (inclusive),
m, m 1 and m 2 , independently of one another, are integers which vary between 0 and 150 (inclusive),
with n+m≧10,
with n 1 +m 1 ≧1,
with n 2 +m 2 ≧1,
the group R is at least one selected from the group consisting of H, CH 3 , C 2 H 5 , C 3 H 7 , C 4 H 9 , PO 3 X 2 and a group NYZ in which:
Y and Z may be identical or different,
Y represents (EO) n3 —(PO) m3 —PO 3 X 2 or (EO) n3 —(PO) m3 —H,
Z represents (EO) n4 —(PO) n4 —PO 3 X 2 or (EO) n4 —(PO) m4 —H,
n 3 and n 4 , independently of one another, are integers which vary between 1 and 150 (inclusive) and
m 3 and m 4 , independently of one another, are integers which vary between 0 and 150 (inclusive),
X represents H or M and
M represents a monovalent, divalent or trivalent cation.

2 . The additive of claim 1 , wherein n 1 +m 1 ≦10 and n 2 +m 2 ≦10.

3 . The additive of claim 1 , wherein, in formulas (I), (II) and (III), n 1 and n 2 are equal to 1 and m 1 and m 2 are equal to 0.

4 . The additive of claim 1 , wherein, in formulas (I), (II) and (III), R represents CH 3 .

5 . The additive of claim 1 , wherein M is selected from the group consisting of potassium ion, sodium ion, lithium ion, calcium ion, magnesium ion, ammonium ion and a mixture thereof.

6 . The additive of claim 1 , wherein, in formula (I), m is equal to 0.

7 . The additive of claim 1 , wherein, formula (I), n varies between 20 and 120 (inclusive).

8 . A hydraulic composition, comprising:
water, a hydraulic binder comprising a cement, and at least one additive of claim 1 .

9 . The hydraulic composition according to claim 8 , comprising, relative to a total weight of the composition:
from 2 to 15% by weight of the water, from 10 to 30% by weight of the hydraulic binder, and from 0.05 to 3% by weight of the at least one additive.

10 . The hydraulic composition according to claim 9 , further comprising from 10 to 60% by weight of sand.

11 . The hydraulic composition of claim 8 , comprising:
from 2 to 15% by weight of the water, from 10 to 30% by weight of the hydraulic binder, from 0.05 to 3% by weight of the at least one additive, from 10 to 60% by weight of sand, and from 10 to 60% by weight of one or more gravels.

12 . A method for preparing the additive of claim 1 , the method comprising
oxyalkylation of a compound of formula (XIV):

in the presence of at least (n 1 +n 2 ) moles of ethylene oxide and at least (m 1 +m 2 ) moles of propylene oxide per mole of the compound of formula (XIV),
phosphatization of an intermediate compound of formula (XV):

in the presence of P 2 O 5 and water, and
optionally, partial or complete neutralization of a phosphate compound thus obtained, so as to obtain the additive comprising a mixture of the compounds of formulas (I), (II) and (III).

13 . A hydraulic composition, comprising the additive of claim 1 in the form of a concrete or a mortar.

14 . A method for preparing a hydraulic composition, the method consisting of adding the additive of claim 1 to a composition.

Assignees

• Coatex Sas

Inventors

• Platel David
• Suau Jean-Marc

Classifications

• C04B24/243 Primary

  Phosphorus-containing polymers · CPC title

• C04B2103/308

  Slump-loss preventing agents · CPC title

• C04B28/02

  containing hydraulic cements other than calcium sulfates · CPC title

• C08G65/327

  containing phosphorus · CPC title

• C04B2103/32

  Superplasticisers · CPC title