Patent US4291088A successfully refreshed from Google Patents.
US4291088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam products from furfuryl alcohol-amino-formaldehyde
Assignee: Greif International Holding BV
•
Filing: 1979-08-14
•
Granted: 1981-09-22
•
Expires: 1999-08-14
Abstract
Abstract Non-inflammable, non-flashing foam products such as foam boards, which comprise a layer of a rigid foam of a furfuryl alcohol-formaldehyde containing resin composition wherein at least one surface of said foam product has, as an integral part of its surface layer, porous glass fibre tissue. In accordance with another feature of the invention the glass fibre tissue surface is covered with a layer of an inorganic material such as a silicate. Methods of making these foam products are also disclosed.
Inventors
- 👤 Per L. Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:31
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/18; B32B15/00; B32B15/04; B32B15/046; B32B15/20; C; C08; C08J; C08J9/00; C08J9/34; C08J9/36; C08J9/365; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; B32B2255/00; B32B2255/10; B32B2255/102; B32B2255/20; B32B2262/00; B32B2262/10; B32B2262/101; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0285; B32B2305/00; B32B2305/08; B32B2311/00; B32B2311/24; C08J2361/00; C08J2361/34; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249985; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/298; Y10T442/00; Y10T442/60; Y10T442/647; Y10T442/696
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
99 words
A non-inflammable, non-flashing foam product, particularly foam board, comprising: (a) a layer of a rigid foam product of a furfuryl alcohol-aminoformaldehyde resin composition containing at least a sufficient amount of a boron compound so that the foam will pass the muffle furnace test at 500° C. and has no second exotherm at 200° C.; (b) at least one surface of said layer of rigid foam product having, as an integral part of its surface layer, a porous glass fibre tissue; (c) a solid or semi-solid layer of an inorganic material applied subsequently onto the glass fibre tissue containing surface.
Claim 2
Dependent Claim
99 words
A non-inflammable, non-flashing foam product, particularly foam board, comprising: (a) a layer of a rigid foam product of a furfuryl alcohol-aminoformaldehyde resin composition containing at least a sufficient amount of a boron compound so that the foam will pass the muffle furnace test at 500° C. and has no second exotherm at 200° C.; (b) at least one surface of said layer of rigid foam product having, as an integral part of its surface layer, a porous glass fibre tissue; (c) a solid or semi-solid layer of an inorganic material applied subsequently onto the glass fibre tissue containing surface.
Claim 3
Dependent Claim
130 words
A non-inflammable, non-flashing foam product, particularly foam board, comprising: (a) a layer of a rigid foam product of a furfuryl alcohol-aminoformaldehyde resin composition containing at least a sufficient amount of a boron compound so that the foam will pass the muffle furnace test at 500° C. and has no second exotherm at 200° C.; (b) at least one surface of said layer of rigid foam product having, as an integral part of its surface layer, a porous glass fibre tissue; (c) at least one surface of said rigid foam product layer on which has been applied, at least in part, an adhesive of a silicate base material, having a ratio of SiO 2 to alkali metal oxide of 1.6:1 to 3.9:1; (d) a rigid or flexible facing overlying said adhesive.
Claim 4
Dependent Claim
130 words
A non-inflammable, non-flashing foam product, particularly foam board, comprising: (a) a layer of a rigid foam product of a furfuryl alcohol-aminoformaldehyde resin composition containing at least a sufficient amount of a boron compound so that the foam will pass the muffle furnace test at 500° C. and has no second exotherm at 200° C.; (b) at least one surface of said layer of rigid foam product having, as an integral part of its surface layer, a porous glass fibre tissue; (c) at least one surface of said rigid foam product layer on which has been applied, at least in part, an adhesive of a silicate base material, having a ratio of SiO 2 to alkali metal oxide of 1.6:1 to 3.9:1; (d) a rigid or flexible facing overlying said adhesive.
Claim 5
Dependent Claim
21 words
The foam product of claims 2 wherein the fibers in the glass tissue range in size from 6 to 12 mm.
Claim 6
Dependent Claim
16 words
The laminate of claims 2 or 3, wherein the silicate base material contains a boron compound.
Claim 7
Dependent Claim
13 words
The foam product of claim 4 wherein said boron compound is a borate.
Claim 8
Dependent Claim
12 words
The foam product of claim 4 wherein said boron compound is borax.
Claim 9
Dependent Claim
14 words
The foam product of claim 2 wherein said flexible facing is a metallic foil.
Claim 10
Dependent Claim
14 words
The foam product of claim 7 wherein said metallic foil is an aluminium foil.
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) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |