EP0153146A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Article suitable for wiping surfaces
Assignee: Unilever NV
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Filing: 1985-02-13
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Granted: —
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Expires: 2005-02-13
Abstract
Abstract A wiping cloth or similar article especially suitable for wiping glossy hard surfaces to give a streak-free result comprises a flexible absorbent substrate of fibrous material, advante- geously consisting at least partially of natural cellulosic fibers, treated with a cationic polyacrylamide to enhance its soil capture capability. Preferably the article carriers a fully formulated streak-free cleaning composition.
Inventors
- 👤 John Lloyd
- 👤 George Kerr Rennie
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 20:12
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3769; A; A47; A47L; A47L13/00; A47L13/10; A47L13/16; A47L13/17; C11D17/00; C11D17/04; C11D17/049; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/285; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/31; Y10T442/00; Y10T442/20; Y10T442/2279; Y10T442/2508; Y10T442/2762; Y10T442/277
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
41 words
An article suitable for wiping surfaces, said article comprising a flexible absorbent substrate of fibrous material treated with a cationic polymeric dirt-capture agent and optionally carrying a cleaning agent, characterised in that the cationic polymeric dirt-capture agent is a cationic polyacrylamide.
Claim 2
Dependent Claim
41 words
An article suitable for wiping surfaces, said article comprising a flexible absorbent substrate of fibrous material treated with a cationic polymeric dirt-capture agent and optionally carrying a cleaning agent, characterised in that the cationic polymeric dirt-capture agent is a cationic polyacrylamide.
Claim 3
Dependent Claim
47 words
An article according to claim 1, characterised in that the cationic polymeric dirt-capture agent is a copolymer comprising at least 50 mole % of acrylamide units and up to 50 mole % of an aminoalkyl ester of acrylic or methacrylic acid which is wholly or partially quaternised.
Claim 4
Dependent Claim
43 words
An article according to claim 2, characterised in that the cationic polymeric dirt-capture agent is a copolymer comprising from 80 to 97 mole % of acrylamide units and from 3 to 20 mole % of units of said wholly or partially quaternised ester.
Claim 5
Dependent Claim
32 words
An article according to claim 2 or claim 3, characterised in that the cationic polymeric dirt-capture agent comprises acrylamide units and units of wholly or partially quaternised dimethylamino acrylate or diethylamino acrylate.
Claim 6
Dependent Claim
45 words
An article according to any one of claims 2 to 4, characterised in that the cationic polymeric dirt-capture agent comprises acrylamide units and units of an aminoalkyl ester of acrylic or methacrylic acid having a degree of quaternisation of from 3 to 50 mole %.
Claim 7
Dependent Claim
29 words
An article according to any one of claims 1 to 5, characterised in that the cationic polymeric dirt-capture agent has a molecular weight of from 5 to 20 million.
Claim 8
Dependent Claim
24 words
An article according to any one of claims 1 to 6, characterised in that the substrate consists at least partially of natural cellulosic fibres.
Claim 9
Dependent Claim
34 words
An article according to any one of claims 1 to 7, characterised in that the substrate is in the form of a single-layer or multiple-layer sheet having a thickness of at least 0.5 mm.
Claim 10
Dependent Claim
37 words
An article according to any one of claims 1 to 8, characterised in that the substrate is in the form of a single-layer or multiple-layer sheet having a base weight of at least 50 g/m 2 .
Claim 11
Dependent Claim
42 words
An article according to any one of claims 1 to 9, characterised in that the substrate is in the form of a single-layer or multiple-layer sheet and comprises a layer of bulky fibrous sheet material having a porosity of at least 80%.
Claim 12
Dependent Claim
47 words
An article according to claim 10, characterised in that at least one outer surface of said layer of bulky fibrous sheet material has flattened areas including thermoplastic fibres coalesced by the application of heat and pressure to such an extent as substantially to lose their fibrous identity.
Claim 13
Dependent Claim
37 words
An article according to any one of claims 1 to 11, characterised in that all the cationic polymeric dirt-capture agent present is so held by the fibres of the substrate that it cannot be removed by washing.
Claim 14
Dependent Claim
33 words
An article according to any one of claims 1 to 12, characterised in that the substrate consists of a single layer of flexible fibrous wet-strength sheet material impregnated with a liquid cleaning composition.
Claim 15
Dependent Claim
37 words
An article according to any one of claims 1 to 12, characterised in that the substrate comprises at least two layers of flexible fibrous wet-strength sheet material laminated together and is impregnated with the liquid cleaning composition.
Claim 16
Dependent Claim
25 words
An article according to any one of claims 1 to 12, characterised in that the substrate carries a liquid cleaning composition in controlled release form.
Claim 17
Dependent Claim
39 words
An article according to claim 15, characterised in that the substrate comprises two layers of flexible fibrous wet-strength sheet material having a layer of absorbent material positioned between them, said absorbent material being impregnated with the liquid cleaning composition.
Claim 18
Dependent Claim
41 words
An article according to claim 16, characterised in that said absorbent material is a porous polymer capable of retaining at least 5 ml of liquid per g polymer against gravity and of releasing said liquid on the application of hand pressure.
Claim 19
Dependent Claim
26 words
An article according to claim 17, characterised in that the porous polymer is a styrene homo- or copolymer or a chemically modified styrene homo- or copolymer.
Claim 20
Dependent Claim
16 words
An article according to claim 18, characterised in that the porous polymer is a sulphonated polystyrene.
Claim 21
Dependent Claim
54 words
An article according to any one of claim 13 to 19, characterised in that the liquid cleaning composition is a homogeneous aqueous solution having a surface tension of less than 45 mNm which when applied to a surface and allowed to dry, dries substantially without forming discrete droplets or particles larger than 0.25 µm.
Claim 22
Dependent Claim
37 words
An article according to claim 20, characterised in that the liquid cleaning composition contains water, a nonionic surfactant is an amount not exceeding 1.5% by weight, and optionally a lower aliphatic alcohol selected from ethanol and isopropanol.
Claim 23
Dependent Claim
96 words
A process for the production of an article suitable for wiping surfaces, said article comprising a flexible absorbent substrate of fibrous material treated with a cationic polymeric dirt-capture agent and carrying a liquid cleaning composition, characterised in that: (i) the substrate is treated with a solution of a cationic polyacrylamide; (ii) the substrate is dried; (iii) optionally the substrate is washed with water or with the liquid cleaning composition to remove any of said cationic polyacrylamide not bound to the fibres of the substrate ; and (iv) the substrate is impregnated with the liquid cleaning composition.
Claim 24
Dependent Claim
96 words
A process for the production of an article suitable for wiping surfaces, said article comprising a flexible absorbent substrate of fibrous material treated with a cationic polymeric dirt-capture agent and carrying a liquid cleaning composition, characterised in that: (i) the substrate is treated with a solution of a cationic polyacrylamide; (ii) the substrate is dried; (iii) optionally the substrate is washed with water or with the liquid cleaning composition to remove any of said cationic polyacrylamide not bound to the fibres of the substrate ; and (iv) the substrate is impregnated with the liquid cleaning composition.
References Cited (Backward Citations)
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