Global Patent Index - EP 0915957 A4

EP 0915957 A4 2001-12-12 - A PROCESS AND COMPOSITION FOR DETERGENTS

Title (en)

A PROCESS AND COMPOSITION FOR DETERGENTS

Title (de)

VERFAHREN UND ZUSAMMENSETZUNG FÜR WASCHMITTEL

Title (fr)

PROCEDE ET COMPOSITION RELATIFS A DES DETERGENTS

Publication

EP 0915957 A4 (EN)

Application

EP 97934283 A

Priority

  • GB 9616114 A
  • US 9712964 W

Abstract (en)

[origin: GB2315764A] A detergent composition is selected from: (i) a particulate base composition having a core which comprises a solid surfactant and an alkaline source, and an outer layer comprising an acid source; (ii) a particulate base composition comprising an alkaline source and having a core comprising an acid source, and an outer layer comprising a surfactant. A process for the manufacture of a detergent composition is selected from: (i) admixture of a solid surfactant with an alkaline source, and coating at least said surfactant with an acid source; (ii) making a base composition comprising a solid acid source, coating said source with a surfactant, and further adding an alkaline source. A gas is produced on reaction of the acid source and alkaline source. The alkaline source is preferably selected from an alkali metal carbonate, alkali metal bicarbonate, alkali metal sesquicarbonate, alkali metal percarbonate, alkaline earth metal carbonate, alkaline earth metal bicarbonate or alkaline earth metal sesquicarbonate. The acid source may be selected from organic acids (preferably citric acid, glutaric acid, succinic acid or adipic acid) and inorganic (including mineral) acids (preferably monosodium phosphate, sodium hydrogen sulphate or boric acid).

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

C11D 11/00; C11D 17/00; C11D 17/06

IPC 8 full level (invention and additional information)

C11D 3/00 (2006.01); C11D 3/02 (2006.01); C11D 3/20 (2006.01); C11D 11/00 (2006.01); C11D 11/04 (2006.01); C11D 17/00 (2006.01); C11D 17/06 (2006.01)

CPC (invention and additional information)

C11D 3/046 (2013.01); C11D 3/0052 (2013.01); C11D 3/042 (2013.01); C11D 3/2082 (2013.01); C11D 3/2086 (2013.01); C11D 11/0082 (2013.01); C11D 17/0039 (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

GB 2315764 A 19980211; GB 9616114 D0 19960911; AR 008270 A1 19991229; BR 9710900 A 20001024; CA 2261348 A1 19980205; CA 2261348 C 20021015; EP 0915957 A1 19990519; EP 0915957 A4 20011212; JP H11514042 A 19991130; WO 9804671 A1 19980205

INPADOC legal status


2004-05-06 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20031028

2003-07-30 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030617

2001-12-12 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20011029

2001-12-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

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

1999-05-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990125

1999-05-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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