Patent US4397906A successfully refreshed from Google Patents.
US4397906A
Expired / Lapsed
US
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Multilayer structural building material
Assignee: Sekisui Chemical Co Ltd
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Filing: 1981-04-29
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Granted: 1983-08-09
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Expires: 2001-04-29
Abstract
Abstract A multilayer structural building material comprising a polyolefin or polybutadiene foam sheet as a base layer, a dry coated layer of a polychloroprene-type adhesive as an interlayer, and a dry coated layer of a mixture of a water-base adhesive and an inorganic filler as a surface layer.
Inventors
- 👤 Yoshihiro Nakagawa
- 👤 Hachirou Yuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:50
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; C08J9/00; C08J9/36; C08J9/365; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/26; C09J7/30; C09J7/38; C08L; C08L11/00; C08L23/00; C08L23/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/249921; Y10T428/249953; Y10T428/249976; Y10T428/249982; Y10T428/249983; Y10T428/249985; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/25; Y10T428/256; Y10T428/28; Y10T428/2848; Y10T428/2852; Y10T428/2878; Y10T428/2883; Y10T428/2891
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
A multilayer structural building material which is especially suitable as a backing material with one side bonded to walls, ceilings or floors and the other side bonded to a surface material of wall paper or a non woven fabric, said multilayer structural material comprising a polyolefin or polybutadiene foam sheet as a base layer, a dry coated layer of a polychloroprene-type adhesive as an interlayer, and a dry coated layer of a mixture of a water-base adhesive and an inorganic filler as a surface layer.
Claim 2
Dependent Claim
85 words
A multilayer structural building material which is especially suitable as a backing material with one side bonded to walls, ceilings or floors and the other side bonded to a surface material of wall paper or a non woven fabric, said multilayer structural material comprising a polyolefin or polybutadiene foam sheet as a base layer, a dry coated layer of a polychloroprene-type adhesive as an interlayer, and a dry coated layer of a mixture of a water-base adhesive and an inorganic filler as a surface layer.
Claim 3
Dependent Claim
34 words
The material of claim 1 wherein the amount of the inorganic filler is 50 to 90% by weight based on the total weight of the inorganic filler and the solid of the water-base adhesive.
Claim 4
Dependent Claim
21 words
The material of claim 1 or 2 wherein the average particle diameter of the inorganic filler is 0.1 to 300 microns.
Claim 5
Dependent Claim
16 words
The material of claim 1 or 2 wherein the water-base adhesive is a vinyl acetate-type adhesive.
Claim 6
Dependent Claim
20 words
The material of any one of claims 1 or 2 wherein the inorganic filler is aluminum silicate or aluminum hydroxide.
Claim 7
Dependent Claim
24 words
The material of claims 1 or 2 wherein the mixture of a water-base adhesive and an inorganic filler is coated in dots or lines.
Claim 8
Dependent Claim
16 words
The material of claims 1 or 2 wherein the foam sheet is a polyethylene foam sheet.
Claim 9
Dependent Claim
20 words
The material of any one of claims 1 or 2 wherein the foam sheet is a closed cellular foam sheet.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |