# US 4,397,906 A · Multilayer structural building material

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- Number: US 4,397,906 A
- Document ID: US4397906A
- Status: Granted
- Kind: A
- Application number: 06/258,557
- Filed: 1981-04-29
- Granted: 1983-08-09
- Earliest claimed: 1980-04-30
- Assignees: Sekisui Kagaku Kogyo Kabushiki Kaisha
- Inventors: Yoshihiro Nakagawa; Hachirou Yuura
- Web page: https://patentgrep.com/patent/US4397906A

## CPC

- C08J 5/124: {using adhesives based on a macromolecular component}
- C08J 9/365: {Coating}
- C09J 7/22: Plastics; Metallised plastics
- C09J 7/26: Porous or cellular plastics
- C09J 7/38: Pressure-sensitive adhesives [PSA]
- C08L 11/00: Compositions of homopolymers or copolymers of chloroprene
- C08L 23/02: not modified by chemical after-treatment
- Y10T 428/24802: Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T 428/24893: including particulate material
- Y10T 428/249976: Voids specified as closed
- Y10T 428/249983: As outermost component
- Y10T 428/249985: Composition of adhesive or bonding component specified
- Y10T 428/249992: Linear or thermoplastic
- Y10T 428/25: Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T 428/256: Heavy metal or aluminum or compound thereof
- Y10T 428/2848: Three or more layers
- Y10T 428/2878: including addition polymer from unsaturated monomer
- Y10T 428/2883: including addition polymer of diene monomer [e.g., SBR, SIS, etc.]
- Y10T 428/2891: including addition polymer from alpha-beta unsaturated carboxylic acid [e.g., acrylic acid, methacrylic acid, etc.] Or derivative thereof
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## 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.

## Claims

### Claim 1

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 (depends on 1)

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 3 (depends on 1, 2)

The material of claim 1 or 2 wherein the average particle diameter of the inorganic filler is 0.1 to 300 microns.

### Claim 4 (depends on 1, 2)

The material of claim 1 or 2 wherein the water-base adhesive is a vinyl acetate-type adhesive.

### Claim 5 (depends on 1, 2)

The material of any one of claims 1 or 2 wherein the inorganic filler is aluminum silicate or aluminum hydroxide.

### Claim 6 (depends on 1, 2)

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 7 (depends on 1, 2)

The material of claims 1 or 2 wherein the foam sheet is a polyethylene foam sheet.

### Claim 8 (depends on 1, 2)

The material of any one of claims 1 or 2 wherein the foam sheet is a closed cellular foam sheet.