EP2439261B1 - Flüssigprodukt auf basis von harnstoff-chlorhydrat zur eliminierung von unlöslichen kalziumsalzen - Google Patents

Flüssigprodukt auf basis von harnstoff-chlorhydrat zur eliminierung von unlöslichen kalziumsalzen Download PDF

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Publication number
EP2439261B1
EP2439261B1 EP11183907.2A EP11183907A EP2439261B1 EP 2439261 B1 EP2439261 B1 EP 2439261B1 EP 11183907 A EP11183907 A EP 11183907A EP 2439261 B1 EP2439261 B1 EP 2439261B1
Authority
EP
European Patent Office
Prior art keywords
product
chlorhydrate
concrete
residues
calcium salts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11183907.2A
Other languages
English (en)
French (fr)
Other versions
EP2439261A1 (de
Inventor
M. Barnabé Wayser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cba World Sarl
Original Assignee
CBA World Sarl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CBA World Sarl filed Critical CBA World Sarl
Publication of EP2439261A1 publication Critical patent/EP2439261A1/de
Application granted granted Critical
Publication of EP2439261B1 publication Critical patent/EP2439261B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • C11D3/2086—Hydroxy carboxylic acids-salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/32—Amides; Substituted amides
    • C11D3/323—Amides; Substituted amides urea or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces
    • C11D2111/24—Mineral surfaces, e.g. stones, frescoes, plasters, walls or concretes

Definitions

  • the present invention relates to a liquid product for the removal of insoluble calcium salts, such as calcium carbonate. More particularly, the product according to the present invention is intended for stripping concrete surfaces, metal surfaces or other to remove the residues and efflorescences of concrete or cement they carry.
  • the object of the present invention is to improve the quality and to reduce the pickling time with the aid of products based on urea hydrochloride.
  • the liquid product based on urea hydrochloride for the removal of residues and efflorescences of concrete on concrete, metal or other surfaces is remarkable in it is in the form of an aqueous solution of which 100 g comprise at least approximately 40 g of urea hydrochloride and 2 g of glycolic acid.
  • the addition of a small proportion of glycolic acid to urea hydrochloride does not increase the corrosivity of the product.
  • the Applicant has found that, since the glycolic acid is of the organic type, that its molar mass is small and that the molar ratio between said glycolic acid and urea hydrochloride is small, the addition of said glycolic acid to urea hydrochloride significantly increases the stripping action of the latter and reduces the removal time of concrete and cement residues.
  • the Applicant has found that under certain conditions there is a synergistic effect between urea hydrochloride and glycolic acid.
  • the Applicant believes that the low corrosivity and the low mass of glycolic acid allow it to penetrate deep into the concrete and cement residues without reacting immediately with them, but causing the hydrochloride of urea. Thus, the latter is brought deep inside said residues and can exert, in cooperation with said glycolic acid, a destructuring effect of said residues from the heart thereof.
  • the surface tension of the product can be adjusted by a surfactant, while it is advantageous to incorporate a corrosion inhibitor into said product, especially if the product is intended for pickling metal objects.
  • the present invention relates to an effective and non-corrosive pickling product capable of removing residues, efflorescences or heaps of concrete or cement hung on all kinds of surfaces, and particularly surfaces. concrete and metal surfaces.
  • the product of the invention can therefore be used, safely by the operators and without damage to the surfaces to be stripped, to strip concrete constructions, as well as the tools and equipment used for these constructions.
  • the product according to the invention can even be used to strip paint-coated surfaces without damaging the surfaces.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Detergent Compositions (AREA)

Claims (3)

  1. Flüssigprodukt auf Basis von Harnstoff-Chlorhydrat zur Eliminierung von Beton- oder Zementrückständen und -ausblühungen auf Beton, Metall- oder anderen Oberflächen,
    dadurch gekennzeichnet, dass das Flüssigprodukt die Form einer wässrigen Lösung aufweist, von der 100 g mindestens ungefähr 40 g Harnstoff-Chlorhydrat und 2 g Glykolsäure umfassen.
  2. Produkt nach Anspruch 1,
    dadurch gekennzeichnet, dass es ein Korrosionsschutzmittel umfasst.
  3. Produkt nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass es ein Tensid umfasst.
EP11183907.2A 2010-10-07 2011-10-05 Flüssigprodukt auf basis von harnstoff-chlorhydrat zur eliminierung von unlöslichen kalziumsalzen Active EP2439261B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1058147A FR2965817B1 (fr) 2010-10-07 2010-10-07 Produit liquide a base de chlorhydrate d'uree pour l'elimination de sels de calcium insolubles.

Publications (2)

Publication Number Publication Date
EP2439261A1 EP2439261A1 (de) 2012-04-11
EP2439261B1 true EP2439261B1 (de) 2015-12-02

Family

ID=43982178

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11183907.2A Active EP2439261B1 (de) 2010-10-07 2011-10-05 Flüssigprodukt auf basis von harnstoff-chlorhydrat zur eliminierung von unlöslichen kalziumsalzen

Country Status (2)

Country Link
EP (1) EP2439261B1 (de)
FR (1) FR2965817B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3004460B1 (fr) * 2013-04-16 2015-04-17 Cba World S A Rl Produit pour l'elimination de residus de sels de calcium insolubles.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5672279A (en) 1992-07-24 1997-09-30 Peach State Labs, Inc. Method for using urea hydrochloride
US5451264A (en) * 1994-04-04 1995-09-19 James, Jr.; Jarvis M. Method for removing hardened concrete
GB2416773A (en) * 2004-08-06 2006-02-08 Reckitt Benckiser Inc Aqueous acidic hard surface cleaning compositions and process for cleaning
US7534754B2 (en) * 2004-09-20 2009-05-19 Valspor Sourcing, Inc. Concrete cleaning and preparation composition
US8633191B2 (en) * 2004-09-21 2014-01-21 Stephen C. Perry Anti-microbial and anti-fungal shampoo for mammals especially humans and dogs

Also Published As

Publication number Publication date
FR2965817A1 (fr) 2012-04-13
FR2965817B1 (fr) 2012-11-30
EP2439261A1 (de) 2012-04-11

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