Title of Invention	BLEACHING COMPOSITION
Abstract	A bleaching composition comprising (i) 2 to 30% by-weight of a peroxy compound and <ii) a bleaching and * oxidation catalyst comprising a manganese-based coordination complex of the general formula (A) of the accompanying drawings; wherein Mn is manganese in the IV-oxidation state; n and m are independent integers from 2-8; x represents a co-ordination or bridging species; p is an integer from 0-32; Y is a counter-ion, the type of which is dependent on the charge z of the complex which can be positive, zero or negative; q=z/[charge Y]; and L is a ligand which is an organic molecule containing a number of hetero-atoms selected form N,P,0, and S, which co-ordinates via all or some of its heter-atoms and/or carbon atoms to the Mn (IV}-center (s) , which latter are anti-ferromagnetically coupled, or a bleaching and oxidation catalyst precursor being a manganese-based co-ordination complex which, in the presence of the peroxy compound/ is transformed into a Mn{IV)-based co-ordination complex with anti-ferromagnetically coupled Mn(IV)-centers said catalyst or catalyst precursor being present at a level corresponding to a manganese content of from 0.0005% to 1.0% by weight in the bleaching composition.

Title of Invention

BLEACHING COMPOSITION

Abstract

A bleaching composition comprising (i) 2 to 30% by-weight of a peroxy compound and <ii) a bleaching and * oxidation catalyst comprising a manganese-based coordination complex of the general formula (A) of the accompanying drawings; wherein Mn is manganese in the IV-oxidation state; n and m are independent integers from 2-8; x represents a co-ordination or bridging species; p is an integer from 0-32; Y is a counter-ion, the type of which is dependent on the charge z of the complex which can be positive, zero or negative; q=z/[charge Y]; and L is a ligand which is an organic molecule containing a number of hetero-atoms selected form N,P,0, and S, which co-ordinates via all or some of its heter-atoms and/or carbon atoms to the Mn (IV}-center (s) , which latter are anti-ferromagnetically coupled, or a bleaching and oxidation catalyst precursor being a manganese-based co-ordination complex which, in the presence of the peroxy compound/ is transformed into a Mn{IV)-based co-ordination complex with anti-ferromagnetically coupled Mn(IV)-centers said catalyst or catalyst precursor being present at a level corresponding to a manganese content of from 0.0005% to 1.0% by weight in the bleaching composition.

Full Text

Documents:

146-BOM-1991-CANCELLED PAGES.pdf

146-BOM-1991-CORRESPONDENCE(IPO).pdf

146-BOM-1991-CORRESPONDENCE(RECEIVED).pdf

146-BOM-1991-FORM 2(GRANTED).pdf

146-BOM-1991-FORMS.pdf

146-BOM-1991-SPECIFICATION(AMENDED).pdf

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Patent Number

172881

Indian Patent Application Number

146/BOM/1991

PG Journal Number

40/2012

Publication Date

05-Oct-2012

Grant Date

02-Sep-1994

Date of Filing

20-May-1991

Name of Patentee

HINDUSTAN LEVER LIMITED

Applicant Address

HINDUSTAN LEVER HOUSE, 165/166, BACKBAY RECLAMTION, BOMBAY

Inventors:

#	Inventor's Name	Inventor's Address
1	THOMAS LOUIS F. FAVRE	B. NOOIJSTRAAT 2, 2642 BS PIJNACKER, THE NETHERLANDS
2	TON SWARTHOFF	DEBUSSYSTRAAT 3, 3223 TE HELLEVOETSLUIS, THE NETHERLANDS
3	MARTEN ROBERT P. VAN VLIET	VERGIERDEWEG 266, 2026 ZK HAARLEM, THE NETHERLANDS
4	RONALD HAGE	VAN 'T HOFFSTRAAT 16A, 2313 SP LEIDEN, THE NETHERLANDS
5	KARIN VAN DER HELM RADEMAKER	ROBERT SCHUMANNRING 31. 3137 VB VLAARDINGEN, THE NETHERLANDS
6	JEAN HYPOLTES KOEK	ZWALUWENLAAN 410, 3136 VG VLAARDINGEN, THE NETHERLANDS
7	RUDOLF JOHAN MARTENS	OOSTERSTRAAT 77, 3134 NN VLAARDINGEN, THE NETHERLANDS

PCT International Classification Number

C01G45/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	9011338.2	1990-05-21	GB
2	9027415.0	1990-12-18	GB