EP0239379A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Water spot control and dish-washing compositions
Assignee: Amway Corp
•
Filing: 1987-03-25
•
Granted: —
•
Expires: 2007-03-25
Abstract
Abstract Compositions containing an oxygen bleach, and a proteolytic enzyme, for use in cleaning dishes and the like in a machine dishwasher. The compositions also containing a polyacrylate are water spot reduction compositions.
Inventors
- 👤 Ernest H. Brumbaugh
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 10:18
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3769; C11D3/3757; C11D3/3761; C11D3/38; C11D3/386; C11D3/38609; C11D3/39; C11D3/3942
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
25 words
A composition which comprises an oxygen bleach and a proteolytic enzyme, together with (a) a poly-electrolyte and/or (b) a phosphate compound, a surfactant and silicate.
Claim 2
Dependent Claim
25 words
A composition which comprises an oxygen bleach and a proteolytic enzyme, together with (a) a poly-electrolyte and/or (b) a phosphate compound, a surfactant and silicate.
Claim 3
Dependent Claim
25 words
A water spot reduction composition for use in combination with machine dishwasher detergent components which comprises an oxygen bleach, a proteolytic enzyme, and a polyacrylate.
Claim 4
Dependent Claim
25 words
A water spot reduction composition for use in combination with machine dishwasher detergent components which comprises an oxygen bleach, a proteolytic enzyme, and a polyacrylate.
Claim 5
Dependent Claim
19 words
A composition as claimed in claim 2, wherein the polyacrylate has a molecular weight of from 500 to 200,000.
Claim 6
Dependent Claim
29 words
A composition as claimed in claim 2 or 3, wherein the polyacrylate is selected from polymers and copolymers of acrylic acid, methacrylic acid, esters of these acids, and acrylonitrile.
Claim 7
Dependent Claim
25 words
A composition as claimed in any of claims 2 to 4, wherein the polyacrylate comprises from 0.1% to 20% by weight of the total composition.
Claim 8
Dependent Claim
26 words
An automatic dishwashing composition for use in a machine dishwasher which comprises a phosphate compound, a surfactant, a silicate, an oxygen bleach and a proteolytic enzyme.
Claim 9
Dependent Claim
26 words
An automatic dishwashing composition for use in a machine dishwasher which comprises a phosphate compound, a surfactant, a silicate, an oxygen bleach and a proteolytic enzyme.
Claim 10
Dependent Claim
14 words
A composition as claimed in claim 6, wherein the phosphate compound is a polyphosphate.
Claim 11
Dependent Claim
23 words
A composition as claimed in claim 6 or 7, wherein said phosphate compound comprises from 0% to 80% by weight of the composition.
Claim 12
Dependent Claim
27 words
A composition as claimed in any of claims 6 to 8, wherein the surfactant is selected from low-foaming fatty alcohol ethoxylates and ethylene oxide/propylene oxide block polymers.
Claim 13
Dependent Claim
24 words
A composition as claimed in any of claims 6 to 9, wherein the surfactant comprises from 0.5% to 10% by weight of the composition.
Claim 14
Dependent Claim
19 words
A composition as claimed in any of claims 6 to 10, wherein the silicate is an alkali metal silicate.
Claim 15
Dependent Claim
24 words
A composition as claimed in any of claims 6 to 11, wherein the silicate comprises from 5% to 40% by weight of the composition.
Claim 16
Dependent Claim
16 words
A composition as claimed in any of claims 6 to 12, which also contains a sulphate.
Claim 17
Dependent Claim
17 words
a composition as claimed in claim 13, which contains up to 50% by weight of sodium sulphate.
Claim 18
Dependent Claim
22 words
A composition as claimed in any of claims 6 to 14, which also contains up to 50% by weight of sodium carbonate.
Claim 19
Dependent Claim
15 words
A composition as claimed in any of claim 6 to 15, which contains a polyacrylate.
Claim 20
Dependent Claim
20 words
A composition as claimed in claim 16, wherein the polyelectrolyte is as defined in any of claims 3 to 5.
Claim 21
Dependent Claim
29 words
A composition as claimed in any of claims 1 to 17, wherein the oxygen bleach is selected from alkali metal and alkaline earth metal perborates, percarbonates, perphosphates and persulphates.
Claim 22
Dependent Claim
34 words
A composition as claimed in any of claims 1 to 18, wherein the oxygen bleach provides from 0.05% to 5% by weight available oxygen on the basis of the total weight of the composition.
Claim 23
Dependent Claim
32 words
A composition as claimed in any of claims 1 to 19, wherein the proteolytic enzyme is selected from trypsin, chymotripsin, pepsin, papain, bromelin, carboxylase, collagenase, keratinase, elastase, amino peptidase, subtilisin and aspergillopeptidase.
Claim 24
Dependent Claim
40 words
A composition as claimed in any of claims 1 to 20, wherein the proteolytic enzyme is present in an amount such that the composition has an enzyme activity of from 2 KNPU to 200 KNPU per kilogram, of total composition.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.