Lavatory cleansing blocks

• US 5,711,920 A
• Filed: 06/06/1995
• Issued: 01/27/1998
• Est. Priority Date: 04/13/1988
• Status: Expired due to Term

• Current Assignee: Jeyes Group Limited (Henkel AG & Co KGaA)
• Original Assignee: Jeyes Limited (Henkel AG & Co KGaA)
• Inventors: Marshall, John, Barford, Eric Dennis, Jeffrey, Daniel John, Raynor, Paul Anthony
• Primary Examiner(s): MCMAHON, TIMOTHY M
• Application Number:
  US08/467,901
• Time in Patent Office: 966 Days
• Field of Search: 422/282, 422/937, 252/94, 252/106, 252/186.33, 252/186.35, 134/6
• US Class Current: 422/282
• CPC Class Codes: C11D 1/143 Sulfonic acid esters
• CPC Class Codes: C11D 1/146 Sulfuric acid esters
• CPC Class Codes: C11D 1/22 derived from aromatic compounds
• CPC Class Codes: C11D 1/72 Ethers of polyoxyalkylene glycols
• CPC Class Codes: C11D 1/83 Mixtures of non-ionic with anionic compounds
• CPC Class Codes: C11D 17/0047 Detergents in the form of bars or tablets
• CPC Class Codes: C11D 17/0056 Lavatory cleansing blocks
• CPC Class Codes: C11D 3/046 Salts
• CPC Class Codes: C11D 3/3955 Organic bleaching agents C11D3/3951 takes precedence

Abstract

A solid lavatory cleaning block is formed of a composition comprising a mixture of (A) a surface active component comprising one or more anionic surface active agents; (B) a chlorine release agent component consisting of one or more chlorinated cyanuric acid derivatives; and (C) a source of barium, cadmium, calcium, copper, iron, magnesium, manganese or nickel ions.

In order that the invention may be well understood the following examples are given by way of illustration only.

Claims

1. A solid lavatory cleansing block for positioning standing free or in a container in a cistern of a lavatory or urinal or in a container in the path of flushing water and formed of a composition consisting of a mixture of (A) a surface active component comprising one or more anionic surface active agents;

(B) a chlorine release agent component consisting of one or more chlorinated cyanuric acid derivatives; and

(C) a water-soluble salt having its anion selected from the group consisting of sulphate and chloride and its cation selected from the group consisting of barium, cadmium, calcium, copper, iron, magnesium, manganese and nickel.

2. The block as claimed in claim 1 in which component (C) is a source of barium, cadmium, calcium, iron or magnesium ions.

3. The block as claimed in claim 2 in which compound (C) is a source of calcium or magnesium ions.

4. The block as claimed in claim 1 in which the anionic surface active agent is an alkali metal paraffin sulphonate, alkali metal alkyl sulphate or alkali metal alkyl aryl sulphonate.