Patent · US Expired

Method for cleaning a glass surface with solutions of dissolved pelleted components containing high molecular weight polyphosphates, carbonates and acid-forming substances

US4502892A · kind A · utility

5Cited by

6References

15Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Lothar Westermann · Cologne, DE
Horst-Dieter Wasel-Nielen · Hürth, DE
G/u/ nter Sorbe · Bad Mergentheim, DE

Key dates

Filing date	Jul 13, 1983
Grant date	Mar 5, 1985
Priority date	—
Expiry date	Jul 13, 2003

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC11D3/10
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to a composition suitable for use in cleaning panes of glass, consisting of a pelleted blend of surfactants, the composition containing: PA0 (a) a water-soluble alkali metal polyphosphate of high molecular weight with a P.sub.2 O.sub.5 -content of 60 to 70 weight %; PA0 (b) at least one alkali metal carbonate or hydrogen-carbonate; PA0 (c) at least one crystalline substance producing an acid reaction in aqueous solution; PA0 (d) at least one anion-active and/or non-ionic surfactant; and PA0 (e) at least one filler, if desired or convenient.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.