US3677820A - Method to prevent glassware etching in a dishwasher - Google Patents

Method to prevent glassware etching in a dishwasher Download PDF

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US3677820A
US3677820A US3677820DA US3677820A US 3677820 A US3677820 A US 3677820A US 3677820D A US3677820D A US 3677820DA US 3677820 A US3677820 A US 3677820A
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glassware
dishwasher
metal
washing
method
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Beverly J Rutkowski
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Whirlpool Corp
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Whirlpool Corp
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0002Washing processes, i.e. machine working principles characterised by phases or operational steps
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0018Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0049Detection or prevention of malfunction, including accident prevention
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2601/00Washing methods characterised by the use of a particular treatment
    • A47L2601/02Pressurised cleaning liquid delivered by a pump

Abstract

A METHOD OF AND APPARATUS FOR SUBSTANTIALLY PREVENTING CORROSION OF GLASSWARE DURING WASHING THEREOF WITH A CORROSION PRODUCING DETERGENT SOLUTION IN A MECHANICAL DISHWASHER OF THE HOUSEHOLD TYPE IN WHICH AN ALKALINE DETERGENT SOLUTION CONTACTS THE GLASSWARE FOR CLEANING THEREOF

WHILE SIMULTANEOUSLY CONTACTING A PIECE OF METAL COMPRISING EITHER ZINC OR MAGNESIUM OF A MIXTURE THEREOF.

Description

July 18, 1972 u ws 3,677,820

METHOD TO PREVENT GLASSWARE E'ITCHING IN A DISHWASHER Filed Ma 28, 1970 INVENTOR BEVERLY J. RUTKOWSKI ATTORNEYS United States Patent 3,677,820 METHOD TO PREVENT GLASSWARE ETCHNG IN A DISHWASHER Beverly J. Rntkowski, Benton Harbor, Mich., assignor to Whirlpool Corporation Filed May 28, 1970, Ser. No. 41,186 Int. Cl. A471 /00; B08b 3/02 US. Cl. 134-25 A 8 Claims ABSTRACT OF THE DISCLOSURE BACKGROUND OF THE INVENTION In washing glassware particularly in mechanical dishwashers of the household type the detergent used to produce the washing solution is quite alkaline with the result that over a period of time the surfaces of the glassware are attacked by the washing solution to produce a permanent cloudy efiect due to the corrosion or etching of the glassware surface by the alkaline solution. This glassware etching or corrosion problem is particularly common in soft water areas, but the problem is not limited to such areas. There have been methods and apparatus proposed in the past for preventing such glassware etching or corrosion but these previously proposed methods and apparatus have depended on a galvanic action involving a sacrificial electrode or adding a corrosion inhibiting salt or oxide to the detergent solution.

SUMMARY OF THE INVENTION In the present invention the corroding or etching of the glassware in a mechanical dishwasher is substantially prevented by contacting the washing solution with a metal comprising either metallic zinc, metallic magnesium or a mixture thereof simultaneously with the applying of a detergent solution to the glassware in the washing portion of the cycle. Although this invention is not limited to any theory of operation it appears that the inhibiting effect of the metal is not the result of a galvanic action and the metallic zinc or magnesium or mixtures thereof does not function as a sacrificial electrode. What appears to be the case is that the washing solution slowly dissolves the metal and deposits it as a protective barrier layer on the glass surface. Because the metal is slowly dissolved it is of course necessary after a period of time to replace the used metal with a fresh metal structure.

One of the features of this invention therefore is to provide an improved method of substantially preventing corrosion of glassware during washing thereof by contacting the washing solution with metallic zinc, metallic magnesium or mixtures thereof.

Another feature of the invention is to provide a mechanical dishwasher for washing glassware which would ordinarily be subjected to corrosive conditions therein by including in the tub in which the glassware is retained during Washing a supply of metallic zinc, metallic magnesium or a mixture of these in position to be contacted by the washing liquid.

BRIEF DESCRIPTION OF THE DRAWINGS In the single figure of the drawing there is illustrated a mechanical dishwasher of the household type embodying Patented July 18, 1972 the apparatus of this invention with which the method of the invention is practiced.

DESCRIPTION OF THE PREFERRED EMBODIMENT In the illustrated embodiment of the drawing the dishwasher disclosed is of the type described and claimed in the prior patent to J. B. Lyman No. 3,444,870 assigned to the same assignee as the present application. Thus, the dishwasher 10 is of the household type that comprises a cabinet 11 enclosing a tub 12 that contains a rack 13 for retaining glassware 14 as illustrated by the single glass held by the rack 13.

In order to circulate washing solution over the rack 13 and dishes including glassware 14 retained therein the bottom of the tub 12 is recessed to form a sump 15 in which is located a motor pump unit 16 that not only draws liquid from the sump 15 for circulation over the rack 13 but which also rotates the customary spray arm 17 through which the washing liquid is forced in sprays to contact articles held in the racks 13. As can be seen the arm 17 is positioned above the top 18 of the sump 15.

In order to prevent substantial corrosion of the glassware 14 by the washing liquid there is mounted on the side of the basket or rack 13 an elongated strip 20 comprising the metal of this invention. This metal may be either zinc, magnesium or a mixture of these and when mounted in this postiion is contacted by the circulating washing liquid substantially simultaneously with its contacting with the glassware 4. Preferably this mass or strip of metal has an exposed surface area of about sixty square inches with a thickness of at least inch.

In practicing the method of this invention it was noted that with the use of ordinary dishwasher detergent and particularly those containing sequestering materials such as polyphosphates the corroding of the glassware began almost immediately and after relatively few washings the cloudy effect produced on the glassware became quite noticeable. Because this is the result of etching the surface of the glassware and not due to a foreign deposit it was of course impossible as a practical matter to remove it.

In contrast, when metallic Zinc or magnesium was present such as by mounting the strip 20 in the tub 12 of the dishwasher and using the same detergent having a high polyphosphate content etching or corroding of the glassware could not be detected even after repeated washings of the glassware. Furthermore, the dissolution of the zinc or magnesium was so slow that it did not have to be replaced until after greatly extended periods of time.

The block of metal used in this invention may of course be any shape desired and is not limited to the illustrated elongated strip. Similarly, it may be mounted at any desired area in the liquid circuit where there is space available and where it will not materially interfere with the liquid flow.

Having described my invention as related to the embodiment shown in the accompanying drawing, it is my intention that the invention be not limited by any of the details of description, unless otherwise specified, but rather be construed broadly within its spirit and scope as set out in the appended claims.

The embodiment of the invention in which an exclusive property or privilege is claimed is defined as follows:

1. The method of substantially preventing corrosion of glassware during washing thereof with an alkaline detergent in a mechanical dishwasher comprising contacting an alkaline detergent solution With a solid piece of metal of the class consisting of zinc and magnesium and with said glassware for cleaning of said glassware.

2. The method of claim 1 wherein said metal comprises z1nc.

3. The method of claim 1 wherein said metal comprises magnesium.

4. The method of claim 1 wherein said contacting is accomplished by circulating said solution over both said glassware and said metal.

5. A mechanical dishwasher for washing glassware while substantially preventing corrosion thereof by a washing liquid, comprising: a tub in which said glassware is retained during said washing thereof; a solid piece of zinc in said tub, said metal having an exposed surface area of about sixty square inches with a thickness of at least A inch; and means for circulating said washing liquid in contact with said metal and with the glassware to prevent substantial corrosion of said glassware by said washing liquid.

6. The dishwasher of claim 5 wherein said metal comprises zinc.

7. The dishwasher of claim 5 wherein said means for contacting said liquid with said metal comprises means for mounting said metal in said tub and means for simultaneously circulating said liquid over said glassware and said metal in said tub.

8. A mechanical dishwasher for washing glass-ware while substantially preventing corrosion thereof by a washing liquid, comprising: a tub in which said glassware is retained during said washing thereof; a solid piece of zinc in said tub; and means for circulating said washing liquid in contact with said zinc and with the glassware to prevent substantial corrosion of said glassware by said Washing liquid.

References Cited UNITED STATES PATENTS 2,447,297 8/1948 Wegst et a1 252-156 X 3,278,446 10/1966 Irani 252156 X 2,957,813 10/ 1960 Reincrt l3429 X 3,444,870 5/1969 Lyman 134-179 MORRIS O. WOLK, Primary Examiner D. G. MILLMAN, Assistant Examiner US. Cl. X.R.

212; l3457 D, 58 D

US3677820D 1970-05-28 1970-05-28 Method to prevent glassware etching in a dishwasher Expired - Lifetime US3677820A (en)

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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070587A1 (en) * 1981-07-17 1983-01-26 THE PROCTER & GAMBLE COMPANY Rinse aid composition
US4908148A (en) * 1989-02-13 1990-03-13 The Procter & Gamble Company Rinse additive compositions providing glassware protection comprising insoluble zinc compounds
US4933101A (en) * 1989-02-13 1990-06-12 The Procter & Gamble Company Liquid automatic dishwashing compositions compounds providing glassware protection
EP0383482A2 (en) * 1989-02-13 1990-08-22 THE PROCTER & GAMBLE COMPANY Granular automatic dishwasher detergent composition providing glassware protection
US5624892A (en) * 1995-05-19 1997-04-29 Lever Brothers Company, Division Of Conopco, Inc. Process for incorporating aluminum salts into an automatic dishwashing composition
WO2001064823A1 (en) * 2000-03-02 2001-09-07 Reckitt Benckiser N.V. Ceramic dishwashing composition
US6622736B1 (en) * 1998-12-29 2003-09-23 Reckitt Benckiser N.V. Water-soluble glass as corrosion protection for glassware in a dishwashing machines
US20040163675A1 (en) * 2001-03-27 2004-08-26 Karlheinz Hanh Device
US20040176269A1 (en) * 2002-12-30 2004-09-09 The Procter & Gamble Company Process of preparing in-situ water-soluble zinc salt for use in automatic dishwashing compositions
US20040176264A1 (en) * 2002-12-30 2004-09-09 The Procter & Gamble Company Rinse aid composition containing water-soluble metal salt for use in automatic dishwashing for glassware corrosion protection
US20040180807A1 (en) * 2002-12-30 2004-09-16 The Procter & Gamble Company Rinse aid composition containing water-soluble metal salt for use in automatic dishwashing for metal corrosion and rust formation protection
US20050003979A1 (en) * 2003-07-02 2005-01-06 Ecolab Inc. Warewashing composition for use in automatic dishwashing machines, comprising a mixture of aluminum and zinc ions
US20050020464A1 (en) * 2003-07-02 2005-01-27 Smith Kim R. Warewashing composition for use in automatic dishwashing machines, and methods for manufacturing and using
US20050039781A1 (en) * 2002-11-01 2005-02-24 The Procter & Gamble Company Dispensing device for liquid detergent compositions
US20050090417A1 (en) * 2002-02-09 2005-04-28 Hahn Karlheinz U.G. Glassware corrosion inhibitor
US20050087213A1 (en) * 2001-02-22 2005-04-28 Hahn Karlheinz U.G. Water-soluble glass as corrosion protector in dishwashing machines
US20050113271A1 (en) * 2002-06-06 2005-05-26 Ulrich Pegelow Automatic dishwashing detergent with improved glass anti-corrosion properties II
US7153816B2 (en) 2001-08-17 2006-12-26 Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa) Dishwasher detergent with improved protection against glass corrosion
US20070054826A1 (en) * 2003-10-17 2007-03-08 Reckitt Benckiser N.V. Water-soluble glass composition
US20070054824A1 (en) * 2003-05-28 2007-03-08 Rackitt Benckiser N.V. Composition for the protection of glassware in a dishwashing process
US20070054825A1 (en) * 2003-10-17 2007-03-08 Reckitt Benckiser N.V. Composition for protection of glassware in dishwashers
US20080020960A1 (en) * 2006-07-24 2008-01-24 Smith Kim R Warewashing composition for use in automatic dishwashing machines, and method for using
US20090082245A1 (en) * 2007-05-04 2009-03-26 Ecolab Inc. Method for formulating a branded cleaning product
US20090099054A1 (en) * 2007-05-04 2009-04-16 Ecolab Inc. Method for formulating a reduced phosphorus branded cleaning product or cleaning system
EP2263980A1 (en) * 2009-06-16 2010-12-22 Innovent e.V. Technologieentwicklung Corrosion protection agent for glass
WO2012140438A1 (en) 2011-04-15 2012-10-18 Revolymer Limited Novel composite
WO2012140442A1 (en) 2011-04-15 2012-10-18 Revolymer Limited Particles with hydroxyl vinylic copolymer coating sensitive to ionic strength
WO2012153143A2 (en) 2011-05-12 2012-11-15 Reckitt Benckiser N.V. Improved composition
EP1673428B2 (en) 2003-10-16 2017-12-13 The Procter & Gamble Company Corrosion protection agents for treating glassware surfaces
EP3409755A1 (en) 2008-08-16 2018-12-05 Reckitt Benckiser Finish B.V. Polyethyleneimine as corrosion inhibitor in washing or rinsing processes

Cited By (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0070587A1 (en) * 1981-07-17 1983-01-26 THE PROCTER & GAMBLE COMPANY Rinse aid composition
US4443270A (en) * 1981-07-17 1984-04-17 The Procter & Gamble Company Rinse aid composition
US4908148A (en) * 1989-02-13 1990-03-13 The Procter & Gamble Company Rinse additive compositions providing glassware protection comprising insoluble zinc compounds
US4933101A (en) * 1989-02-13 1990-06-12 The Procter & Gamble Company Liquid automatic dishwashing compositions compounds providing glassware protection
EP0383480A1 (en) * 1989-02-13 1990-08-22 THE PROCTER & GAMBLE COMPANY Rinse additive compositions providing glassware protection
EP0383482A2 (en) * 1989-02-13 1990-08-22 THE PROCTER & GAMBLE COMPANY Granular automatic dishwasher detergent composition providing glassware protection
EP0387997A2 (en) * 1989-02-13 1990-09-19 THE PROCTER & GAMBLE COMPANY Liquid automatic dishwashing compositons providing glassware protection
EP0387997A3 (en) * 1989-02-13 1991-01-23 THE PROCTER & GAMBLE COMPANY Liquid automatic dishwashing compositons providing glassware protection
EP0383482A3 (en) * 1989-02-13 1992-03-18 THE PROCTER & GAMBLE COMPANY Granular automatic dishwasher detergent composition providing glassware protection
US5624892A (en) * 1995-05-19 1997-04-29 Lever Brothers Company, Division Of Conopco, Inc. Process for incorporating aluminum salts into an automatic dishwashing composition
US6622736B1 (en) * 1998-12-29 2003-09-23 Reckitt Benckiser N.V. Water-soluble glass as corrosion protection for glassware in a dishwashing machines
WO2001064823A1 (en) * 2000-03-02 2001-09-07 Reckitt Benckiser N.V. Ceramic dishwashing composition
DE10010209A1 (en) * 2000-03-02 2001-09-13 Reckitt Benckiser Nv Use of ceramic dishwashing composition for protection of glassware from corrosion, involves using ceramic composition comprising at least one compound which releases active agent to protect glassware
US20030050205A1 (en) * 2000-03-02 2003-03-13 Reckitt Benckiser N.V. Ceramic dishwashing composition and method for inhibiting corrosion of glassware
US20040220068A1 (en) * 2000-03-02 2004-11-04 Reckitt Benckiser N.V. Ceramic dishwashing composition for inhibiting corrosion of glassware
US7179776B2 (en) 2000-03-02 2007-02-20 Reckitt Benckiser, N.V. Ceramic dishwashing composition for inhibiting corrosion of glassware
US6806245B2 (en) 2000-03-02 2004-10-19 Reckitt Benckiser N.V. Ceramic dishwashing composition and method for inhibiting corrosion of glassware
US7456142B2 (en) * 2001-02-22 2008-11-25 Reckitt Benckiser N.V. Water-soluble glass as corrosion protector in dishwashing machines
US20050087213A1 (en) * 2001-02-22 2005-04-28 Hahn Karlheinz U.G. Water-soluble glass as corrosion protector in dishwashing machines
US7361632B2 (en) * 2001-02-22 2008-04-22 Reckitt Benckiser N.V. Water soluble glass as corrosion protector in dishwashing machines
US7939483B2 (en) * 2001-02-22 2011-05-10 Reckitt Benckiser N.V. Water-soluble glass as corrosion protector in dishwashing machines
US20100186451A1 (en) * 2001-02-22 2010-07-29 Reckitt Benckiser N.V. Water-soluble glass as corrosion protector in dishwashing machines
US20080015101A1 (en) * 2001-02-22 2008-01-17 Hahn Karlheinz U G Water-Soluble Glass as Corrosion Protector in Dishwashing Machines
US20050253116A1 (en) * 2001-02-22 2005-11-17 Reckitt Benckiser N.V. Water soluble glass as corrosion protector in dishwashing machines
US20040163675A1 (en) * 2001-03-27 2004-08-26 Karlheinz Hanh Device
US7153816B2 (en) 2001-08-17 2006-12-26 Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa) Dishwasher detergent with improved protection against glass corrosion
US20050090417A1 (en) * 2002-02-09 2005-04-28 Hahn Karlheinz U.G. Glassware corrosion inhibitor
US7276470B2 (en) 2002-02-09 2007-10-02 Reckitt Benckiser N.V. Glassware corrosion inhibitor
US20050113271A1 (en) * 2002-06-06 2005-05-26 Ulrich Pegelow Automatic dishwashing detergent with improved glass anti-corrosion properties II
US20050039781A1 (en) * 2002-11-01 2005-02-24 The Procter & Gamble Company Dispensing device for liquid detergent compositions
US20060100118A1 (en) * 2002-12-30 2006-05-11 Song Brian X Process of preparing in-situ water-soluble zinc salt for use in automatic dishwashing compositions
US20040176264A1 (en) * 2002-12-30 2004-09-09 The Procter & Gamble Company Rinse aid composition containing water-soluble metal salt for use in automatic dishwashing for glassware corrosion protection
US20040176269A1 (en) * 2002-12-30 2004-09-09 The Procter & Gamble Company Process of preparing in-situ water-soluble zinc salt for use in automatic dishwashing compositions
US20040180807A1 (en) * 2002-12-30 2004-09-16 The Procter & Gamble Company Rinse aid composition containing water-soluble metal salt for use in automatic dishwashing for metal corrosion and rust formation protection
US6992052B2 (en) 2002-12-30 2006-01-31 The Procter & Gamble Company Process of preparing in-situ water-soluble zinc salt for use in automatic dishwashing compositions
EP1961803A1 (en) 2003-05-28 2008-08-27 Reckitt Benckiser N.V. Composition for the protection of glassware in a dishwashing process
US20070054824A1 (en) * 2003-05-28 2007-03-08 Rackitt Benckiser N.V. Composition for the protection of glassware in a dishwashing process
US8097576B2 (en) * 2003-05-28 2012-01-17 Reckitt Benckiser N.V. Composition for the protection of glassware in a dishwashing process
EP2767580A2 (en) 2003-05-28 2014-08-20 Reckitt Benckiser N.V. Composition for the protection of glassware in a dishwashing process
US20110114127A1 (en) * 2003-05-28 2011-05-19 Reckitt Benckiser N.V. Composition for the Protection of Glassware in a Dishwashing Process
EP2194115A2 (en) 2003-05-28 2010-06-09 Reckitt Benckiser N.V. Composition for the protection of glassware in a dishwashing process
US20050020464A1 (en) * 2003-07-02 2005-01-27 Smith Kim R. Warewashing composition for use in automatic dishwashing machines, and methods for manufacturing and using
US7135448B2 (en) 2003-07-02 2006-11-14 Ecolab Inc. Warewashing composition for use in automatic dishwashing machines, comprising a mixture of aluminum and zinc ions
US20060270580A1 (en) * 2003-07-02 2006-11-30 Ecolab Inc. Warewashing composition for use in automatic dishwashing machines, and methods for manufacturing and using
US7452853B2 (en) 2003-07-02 2008-11-18 Ecolab Inc. Warewashing composition comprising zinc and aluminum ions for use in automatic dishwashing machines
US7196045B2 (en) 2003-07-02 2007-03-27 Ecolab Inc. Warewashing composition comprising a corrosion inhibitor with Al and Zn ions
US20090038649A1 (en) * 2003-07-02 2009-02-12 Ecolab Inc. Warewashing composition for use in automatic dishwashing machines, and methods for manufacturing and using
US20070149431A1 (en) * 2003-07-02 2007-06-28 Lentsch Steven E Warewashing composition for use in automatic dishwashing machines, and methods for manufacturing and using
US7196044B2 (en) 2003-07-02 2007-03-27 Ecolab, Inc. Warewashing composition for use in automatic dishwashing machines, comprising a zinc ion and aluminum ion corrosion inhibitor
US7524803B2 (en) 2003-07-02 2009-04-28 Ecolab Inc. Warewashing composition for use in automatic dishwashing machines comprising an aluminum/zinc ion mixture
US7638473B2 (en) 2003-07-02 2009-12-29 Ecolab Inc. Warewashing composition for use in automatic dishwashing machines, and methods for manufacturing and using
US20050003979A1 (en) * 2003-07-02 2005-01-06 Ecolab Inc. Warewashing composition for use in automatic dishwashing machines, comprising a mixture of aluminum and zinc ions
US7829516B2 (en) 2003-07-02 2010-11-09 Ecolab Usa Inc. Warewashing composition comprising a Zn/Al corrosion inhibitor for use in automatic dishwashing machines
EP1673428B2 (en) 2003-10-16 2017-12-13 The Procter & Gamble Company Corrosion protection agents for treating glassware surfaces
US20090239731A1 (en) * 2003-10-17 2009-09-24 Reckitt Benckiser N.V. Water-soluble glass composition
US20070054825A1 (en) * 2003-10-17 2007-03-08 Reckitt Benckiser N.V. Composition for protection of glassware in dishwashers
US8216990B2 (en) * 2003-10-17 2012-07-10 Reckitt Benckiser N.V. Composition for protection of glassware in dishwasher
US20070054826A1 (en) * 2003-10-17 2007-03-08 Reckitt Benckiser N.V. Water-soluble glass composition
US7741236B2 (en) * 2003-10-17 2010-06-22 Reckitt Benckiser N.V. Water-soluble glass composition
US7858574B2 (en) 2006-07-24 2010-12-28 Ecolab Usa Inc. Method for using warewashing composition comprising AI and Ca or Mg IONS in automatic dishwashing machines
US20100242997A1 (en) * 2006-07-24 2010-09-30 Ecolab Usa Inc. Method for using warewashing composition in automatic dishwashing machines
US7759299B2 (en) 2006-07-24 2010-07-20 Ecolab Inc. Warewashing composition for use in automatic dishwashing machines
US20080020960A1 (en) * 2006-07-24 2008-01-24 Smith Kim R Warewashing composition for use in automatic dishwashing machines, and method for using
US20090099054A1 (en) * 2007-05-04 2009-04-16 Ecolab Inc. Method for formulating a reduced phosphorus branded cleaning product or cleaning system
US20090082245A1 (en) * 2007-05-04 2009-03-26 Ecolab Inc. Method for formulating a branded cleaning product
EP3409755A1 (en) 2008-08-16 2018-12-05 Reckitt Benckiser Finish B.V. Polyethyleneimine as corrosion inhibitor in washing or rinsing processes
EP2263980A1 (en) * 2009-06-16 2010-12-22 Innovent e.V. Technologieentwicklung Corrosion protection agent for glass
WO2012140442A1 (en) 2011-04-15 2012-10-18 Revolymer Limited Particles with hydroxyl vinylic copolymer coating sensitive to ionic strength
WO2012140438A1 (en) 2011-04-15 2012-10-18 Revolymer Limited Novel composite
US9096816B2 (en) 2011-05-12 2015-08-04 Reckitt Benckiser N.V. Composition
WO2012153143A2 (en) 2011-05-12 2012-11-15 Reckitt Benckiser N.V. Improved composition
US10301577B2 (en) 2011-05-12 2019-05-28 Reckitt Benckiser Finish B.V. Composition

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