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US4576864A
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Water spreading plastic material, method for its manufacture and its use as a glazing and roofing material
Assignee: Roehm GmbH Darmstadt
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Filing: 1985-01-02
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Granted: 1986-03-18
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Expires: 2005-01-02
Abstract
Abstract A water-spreading plastic material, comprising a plastic base having a water-repellent surface and having coated thereon: (1) an adhesive comprising a non-water-soluble, organic solvent soluble and essentially non-swellable polar group containing polymer and, (2) a water-spreading layer adhered to said base by said adhesive, being composed of colloid particles selected from the group consisting of silicon oxide, a metallic oxide, and a mixture thereof.
Inventors
- 👤 Jurgen Krautter
- 👤 Willi Dzialas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:15
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/259; Y10T428/31504; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
64 words
A water-spreading plastic material, comprising a plastic base having a water-repellent surface and having coated thereon: (1) an adhesive comprising a non-water-soluble, organic solvent soluble and essentially non-swellable polar group containing polymer and, (2) a water-spreading layer adhered to said base by said adhesive, being composed of colloid particles selected from the group consisting of silicon oxide, a metallic oxide and a mixture thereof.
Claim 2
Dependent Claim
64 words
A water-spreading plastic material, comprising a plastic base having a water-repellent surface and having coated thereon: (1) an adhesive comprising a non-water-soluble, organic solvent soluble and essentially non-swellable polar group containing polymer and, (2) a water-spreading layer adhered to said base by said adhesive, being composed of colloid particles selected from the group consisting of silicon oxide, a metallic oxide and a mixture thereof.
Claim 3
Dependent Claim
21 words
The water-spreading plastic material of claim 1, wherein the polar group of the polymer is neither a base nor a salt.
Claim 4
Dependent Claim
50 words
The water-spreading plastic material of claim 1, wherein at least one of the polar groups of the polymer is selected from the group consisting of a nitrile group, a hydroxyl group, a primary carboxylic acid amide group, a carboxyl group, a sulfonyl group, a silanol group, and a mixture thereof.
Claim 5
Dependent Claim
19 words
The water-spreading plastic material of claim 1, wherein the water-spreading layer is from about 0.01 to 4 μm thick.
Claim 6
Dependent Claim
19 words
The water-spreading plastic material of claim 1, wherein the adhesive layer is from about 0.01 to 20 μm thick.
Claim 7
Dependent Claim
29 words
The water-spreading plastic material of claim 1, wherein said material includes a water-soluble coating over the water-spreading layer, and a protective foil which is detachably adhered to said coating.
Claim 8
Dependent Claim
40 words
The water-spreading plastic material of claim 6, wherein said water-soluble coating contains at least one member selected from the group consisting of dextrine, a cellulose ether, a sodium polyacrylate, a sodium polymethacrylate, polyvinyl alcohol, a gelatin and a mixture thereof.
Claim 9
Dependent Claim
35 words
The water-spreading plastic material of claim 1, wherein said water-spreading layer is composed of colloid particles selected from the group consisting of a non-water-soluble metallic oxide, an anionically modified silicon dioxide and a mixture thereof.
Claim 10
Dependent Claim
31 words
The water-spreading plastic material of claim 1, wherein said water-spreading layer contains a mixture of silicon oxide and aluminum oxide with a Si to Al ratio of from 1:1 to 30:1.
Claim 11
Dependent Claim
39 words
The water-spreading plastic material of claim 1, wherein said water-spreading layer is further composed of colloid particles selected from the group consisting of a zinc oxide, a titanium oxide, a zirconium oxide, a chromium oxide and a mixture thereof.
Claim 12
Dependent Claim
29 words
The water-spreading plastic material of claim 1, wherein said silicon oxide and metallic oxide each have a solubility in water at 20° C., of less than about 200 ppm.
Claim 13
Dependent Claim
19 words
The water-spreading plastic material of claim 1, wherein said colloid particles have a size of less than 200 nm.
Claim 14
Dependent Claim
26 words
The water-spreading plastic material of claim 1, wherein said water-spreading layer forms a contact angle with a water droplet lying thereon, of less than about 20°.
Claim 15
Dependent Claim
14 words
The water-spreading plastic material of claim 1, wherein said polymer is an organic polymer.
Claim 16
Dependent Claim
20 words
The water-spreading plastic material of claim 1, wherein said polymer has a weight average molecular weight of more than 1000.
Claim 17
Dependent Claim
19 words
The water-spreading plastic material of claim 1, wherein at saturation the polymer does not swell above 10% by volume.
Claim 18
Dependent Claim
25 words
The water-spreading plastic material of claim 1, wherein the adhesive forms a contact angle with a water droplet lying thereon, of from 20° to 70°.
Claim 19
Dependent Claim
26 words
The water-spreading plastic material of claim 1, wherein the adhesive contains from 0.4 to 100 polar groups milliequivalents for each 100 g of the polymeric material.
Claim 20
Dependent Claim
67 words
The water-spreading plastic material of claim 1 wherein said polymer is made up of at least one monomer selected from the group consisting of acrylic acid, methacrylic nitrile, a hydroxyalkyl ester of an unsaturated polymerizable carboxylic acid, acrylic amide, methacrylic amide, methacrylic acid, maleic acid, fumaric acid, itaconic acid, vinylsulphonic acid, styrenesulphonic acid, acrylic amidoalkanesulphonic acid, methacrylic amidoalkanesulphonic acid, a acryloxy-trialkylsilane, a methacryloxytrialkylsilane and a mixture thereof.
Claim 21
Dependent Claim
36 words
The water-spreading plastic material of claim 1, wherein said polymer is at least one member selected from the group consisting of a polyester, a polyether, a polycarbonate, a polyurethane, an epoxy resin and a mixture therof.
Claim 22
Dependent Claim
14 words
The water-spreading plastic material of claim 1, wherein said polymer contains a Si-OH group.
Claim 23
Dependent Claim
34 words
The water-spreading plastic material of claim 1, wherein said plastic base is at least one member selected from the group consisting of polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyester, polymethylmethacrylate, polycarbonate and a mixture thereof.
Claim 24
Dependent Claim
25 words
The water-spreading plastic material of claim 1 wherein said plastic base forms a contact angle with a water droplet lying thereon, of at least 70°.
Claim 25
Dependent Claim
72 words
A water-spreading plastic material, comprising a plastic base having a water repellent surface and having coated thereon (1) an adhesive comprising a non-water-soluble, organic solvent soluble and essentially non-swellable polar group containing polymer, and (2) a water-spreading layer adhered to said base by said adhesive, being composed of colloid particles selected from the group consisting of a zinc oxide, a titanium oxide, a zirconium oxide, a chromium oxide and a mixture thereof.
Claim 26
Dependent Claim
72 words
A water-spreading plastic material, comprising a plastic base having a water repellent surface and having coated thereon (1) an adhesive comprising a non-water-soluble, organic solvent soluble and essentially non-swellable polar group containing polymer, and (2) a water-spreading layer adhered to said base by said adhesive, being composed of colloid particles selected from the group consisting of a zinc oxide, a titanium oxide, a zirconium oxide, a chromium oxide and a mixture thereof.
References Cited (Backward Citations)
US4481254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-17 | 1989-09-16 | 1990-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-17 | 1993-09-16 | 1994-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-17 | 1997-09-16 | 1998-03-18 | $7700.00 | Window Closed / Lapsed |