EP0211664A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Article suitable for wiping surfaces
Assignee: Unilever PLC
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Filing: 1986-08-07
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Granted: —
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Expires: 2006-08-07
Abstract
Abstract A sheet-like article (1) suitable for wiping surfaces comprising at least one substrate layer (2,3), the outer surface of which may be abrasive (5), and a core (6) comprising surfactant entrapped within a polymerisation product of a hydroxyalkyl α, β-unsaturated ester, the core (6) also contains a highly absorbent polymeric material.
Inventors
- 👤 Donald Peter
- 👤 Serge Alfred Symien
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 15:47
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/049; A; A47; A47L; A47L13/00; A47L13/10; A47L13/16; A47L13/17
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
87 words
An article suitable for wiping surfaces comprising at least one substrate layer carrying a polymeric material capable of absorbing and retaining at least 3g of hydrophilic liquid per gram of polymer, of releasing at least some of that liquid on the application of hand pressure, and of absorbing further liquid on the release of hand pressure, characterised in that the article additionally comprises a polymerisation product of a hydroxyalkyl ester of an alpha, beta-unsaturated carboxylic acid and a surfactant, said surfactant being entrapped within said polymerisation product.
Claim 2
Dependent Claim
87 words
An article suitable for wiping surfaces comprising at least one substrate layer carrying a polymeric material capable of absorbing and retaining at least 3g of hydrophilic liquid per gram of polymer, of releasing at least some of that liquid on the application of hand pressure, and of absorbing further liquid on the release of hand pressure, characterised in that the article additionally comprises a polymerisation product of a hydroxyalkyl ester of an alpha, beta-unsaturated carboxylic acid and a surfactant, said surfactant being entrapped within said polymerisation product.
Claim 3
Dependent Claim
19 words
An article as claimed in claim 1 wherein the polymerisation product is a polymerisation product of a hydroxyalkyl methacrylate.
Claim 4
Dependent Claim
21 words
An article as claimed in claim 2 wherein the polymerisation product is a polymerisation product of hydroxyethyl methacrylate or hydroxypropyl methacrylate.
Claim 5
Dependent Claim
18 words
An article as claimed in any one of the preceding claims wherein the surfactant is a nonionic surfactant.
Claim 6
Dependent Claim
23 words
An article as claimed in any one of the preceding claims wherein the surfactant is an ethoxylated aliphatic alcohol or an ethoxylated alkylphenol.
Claim 7
Dependent Claim
28 words
An article as claimed in any one of the preceding claims wherein the porous polymeric material is a sulphonation product of a cross-linked polymer containing sulphonation aromatic residues.
Claim 8
Dependent Claim
25 words
An article as claimed in any one of the preceding claims wherein the polymeric material has a pore volume of from 3.0 to 99.5 cc/g.
Claim 9
Dependent Claim
24 words
An article as claimed in any one of the preceding claims wherein the substrate comprises one or more layers of paper and/or nonwoven fabric.
Claim 10
Dependent Claim
27 words
An article as claimed in any one of the preceding claims wherein one or each substrate layer carries a layer of abrasive material on its outer surface.
Claim 11
Dependent Claim
15 words
An article as claimed in claim 9 wherein the abrasive material comprises a particulate material.
Claim 12
Dependent Claim
24 words
An article as claimed in claim 10 wherein the abrasive material has a particle size within the range of from 50 to 1000 µm.
Claim 13
Dependent Claim
21 words
An article as claimed in any one of claims 9 to 11 wherein the abrasive material is a synthetic polymeric material.
Claim 14
Dependent Claim
23 words
An article as claimed in any one of claims 9 to 12 wherein the abrasive material comprises polystyrene, polyvinyl chloride or polymethyl methacrylate.
Claim 15
Dependent Claim
23 words
An article as claimed in claim 12 or 13 wherein the abrasive material is held on the substrate layer(s) by a thermoplastic adhesive.
Claim 16
Dependent Claim
61 words
An article as claimed in any one of the preceding claims comprising a first substrate layer having an abrasive wiping surface, a second substrate layer having a soft, flexible absorbent surface suitable for buffing or wiping surfaces to dryness, between which are sandwiched a core comprising a surfactant entrapped within the polymerisation product of a hydroxalkyl methacrylate, and a polymeric material.
References Cited (Backward Citations)
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