(19)
(11) EP 0 513 948 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.04.1993 Bulletin 1993/16

(43) Date of publication A2:
19.11.1992 Bulletin 1992/47

(21) Application number: 92250105.1

(22) Date of filing: 04.05.1992
(51) International Patent Classification (IPC)5: C11D 7/32, C11D 7/34, C11D 7/50, C11D 3/26, C11D 3/43, C11D 3/34
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU NL PT SE

(30) Priority: 15.05.1991 US 701417

(71) Applicant: HAMPSHIRE CHEMICAL CORPORATION
Lexington, Massachusetts 02173 (US)

(72) Inventors:
  • Woodbury, Richard Paul
    Amherst, N.H. (US)
  • Hartman, JudithAnn Ruth
    Columbia, MD 21046 (US)

(74) Representative: UEXKÜLL & STOLBERG 
Patentanwälte Beselerstrasse 4
22607 Hamburg
22607 Hamburg (DE)


(56) References cited: : 
   
       


    (54) Hard-surface cleaning compositions containing biodegradable chelants


    (57) Hard-surface cleaning composition containing chelating agent and an organic solvent having a boiling point of about 90°C are disclosed. The chelating agent are selected from an alkyliminoacetic acid compound or a compound of the formula


    in which m is NR' or sulfur; X is SO₃H or COOH; Y is hydrogen, SO₃H or COOH; R and R' are, independently, hydrogen, -CH(Z)CH₂(Z'), -CH(Z)CH(Z')(Z'') or -CH₂COOH; and Z, Z', and Z'' are, independently, hydrogen, OH, SO₃H or COOH; or a sodium, potassium or ammonium salt thereof.





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