Global patent index - EP 0915954 A4

EP 0915954 A4 2000-03-22 - A DETERGENT COMPOSITION

Title (en)

A DETERGENT COMPOSITION

Title (de)

WASCHMITTELZUSAMMENSETZUNG

Title (fr)

COMPOSITION DE DETERGENCE

Publication

EP 0915954 A4 (EN)

Application

EP 97936179 A

Priority

  • GB 9616112 A
  • US 9712896 W

Abstract (en)

[origin: GB2315762A] A detergent composition, preferably in granular form, comprises: (i) a surfactant, preferably comprising more than 1% by weight of the composition; (ii) a system, which yields a gas on reaction, comprising: (A) an alkaline source, preferably selected from an alkali metal carbonate, an alkali metal bicarbonate, an alkali metal sesquicarbonate, an alkali metal percarbonate, an alkaline earth metal carbonate, an alkaline earth metal bicarbonate or an alkaline earth metal sesquicarbonate; (B) a dicarboxylic acid, preferably selected from fumaric acid, malic acid, maleic acid, tartaric acid or malonic acid, and the salts or esters thereof; wherein: (I) the mole ratio of (B) to (A) is from 0.005:1 to 2:1; (II) (B) has an effervescence optimum index (EOI) of not more than 4.00, wherein: EOI = MW multiplied by HI multiplied by reciprocal of (10.2 - pKa1) multiplied by reciprocal of (10.2 - pKa2) wherein: ```MW is the molecular weight of the acid source; ```HI (hydrophobicity index) represents the ratio, in the empirical formula of the dicarboxylic acid source, of the number of carbon atoms to the number of oxygen atoms; ```pKa1 and pKa2 represent the logarithm of the first, and second, dissociation constants of the dicarboxylic acid; ``` provided that: said EOI value does not take into consideration a pKa value of at least 10.2; ``` provided that: said composition does not comprise an alkali metal chloroisocyanurate.

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

C11D 7/08; C11D 7/12

IPC 8 full level (invention and additional information)

C11D 3/04 (2006.01); C11D 3/00 (2006.01); C11D 3/10 (2006.01); C11D 3/20 (2006.01); C11D 3/39 (2006.01)

CPC (invention and additional information)

C11D 3/2086 (2013.01); C11D 3/0052 (2013.01); C11D 3/10 (2013.01); C11D 3/2082 (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 2315762 A 19980211; GB 9616112 D0 19960911; AR 008116 A1 19991209; AU 3891397 A 19980220; BR 9710638 A 19990817; CA 2261944 A1 19980205; CZ 9900299 A3 19990714; EP 0915954 A1 19990519; EP 0915954 A4 20000322; HU 9904366 A2 20000428; HU 9904366 A3 20011128; JP H11514041 A 19991130; MA 24283 A1 19980401; NO 990410 A 19990331; NO 990410 D0 19990128; TR 9900175 T2 19990521; WO 9804667 A1 19980205; ZA 9706672 B 19980211

INPADOC legal status

2003-01-29 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020716

2002-04-17 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020304

2000-03-22 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20000204

2000-03-22 [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

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

- Ref Legal Event Code: 17P

- Effective date: 19990125

1999-05-19 [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