IP Library › Granted Patent US 7,456,142
Granted Patent B2
US 7,456,142 · App. 11/776,010 · Granted Nov 25, 2008

Water-soluble glass as corrosion protector in dishwashing machines

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Quick Facts
Patent No.
US 7,456,142
App. No.
11/776,010
Granted
Nov 25, 2008
Kind
B2
Abstract

A zinc-containing, water-soluble glass composition comprising from 41 to 54 mole % of P 2 O 5 , 10 to 30 mole % of alkali oxides, up to 5 mole % of SO 3 and up to 25 mole % of ZnO.

Claims (6)

1. A process for the inhibition of corrosion of glassware in an automatic dishwashing process which comprises the step of contacting the glassware with a zinc-containing, water-soluble glass composition comprising from 41 to 54 mole % of P 2 O 5 , 10 to 30 mole % of alkali metal oxides, up to 5 mole % of SO 3 and up to 25 mole % of ZnO.

2. The process of claim 1 wherein the composition is comminuted.

3. The process of claim 1 wherein the composition is present in the form of a transparent shaped body.

4. A process for the inhibition of corrosion of glassware in an automatic dishwashing process comprising providing a zinc-containing, water-soluble glass composition comprising from 41 to 54 mole % of P 2 O 5 , 10 to 30 mole % of alkali metal oxides, up to 5 mole % of SO 3 and up to 25 mole % of ZnO at an appropriate place within an automatic dishwashing machine wherein the composition is accessible to the wash liquor and/or rinse water.

5. The process of claim 4 wherein the composition is comminuted.

6. The process of claim 4 wherein the composition is present in the form of a transparent shaped body.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 3, 2015
From: RECKITT BENCKISER N.V.
To: RECKITT BENCKISER FINISH B.V.
Reel/Frame 037208/0328 →