Global patent index - EP 1006177 A1

EP 1006177 A1 2000-06-07 - Enamel safe cleaning process

Title (en)

Enamel safe cleaning process

Title (de)

Emailfreundliches Reinigungsverfahren

Title (fr)

Procédé de nettoyage compatible avec de l'émail

Publication

EP 1006177 A1 (EN)

Application

EP 98870262 A

Priority

EP 98870262 A

Abstract (en)

The present invention describes a process of cleaning an enamel surface with a liquid acidic composition comprising an enamel safe acid wherein the pKa of said acid is 3.5 or higher; with the proviso that no mono-lower alkyl ethers or phenyl ethers or benzyl ethers of diethylene glycol, wherein the lower alkyl is of 2 to 6 carbon atoms, are present in said composition. The composition employed in said process is safe to enamel.

IPC 1-7 (main, further and additional classification)

C11D 11/00; C11D 3/02; C11D 3/20

IPC 8 full level (invention and additional information)

C11D 17/08 (2006.01); C11D 3/02 (2006.01); C11D 3/04 (2006.01); C11D 3/20 (2006.01); C11D 3/43 (2006.01); C11D 7/08 (2006.01); C11D 7/26 (2006.01); C11D 7/50 (2006.01); C11D 11/00 (2006.01)

CPC (invention and additional information)

C11D 11/0023 (2013.01); C11D 3/2075 (2013.01); C11D 3/2082 (2013.01); C11D 11/0052 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

EPO simple patent family

EP 1006177 A1 20000607; AU 1834900 A 20000619; CA 2350770 A1 20000608; EP 1135456 A1 20010926; JP 2002531634 A 20020924; TR 200101582 T2 20011022; WO 0032737 A1 20000608; ZA 200104001 B 20020816

INPADOC legal status

2006-06-21 [18R] REFUSED

- Ref Legal Event Code: 18R

- Effective date: 20060217

2005-04-06 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20050216

2001-02-14 [AKX] PAYMENT OF DESIGNATION FEES

- Ref Legal Event Code: AKX

- Free Format Text: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

2001-01-24 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20001125

2000-06-07 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

2000-06-07 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI