US4532261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filler system for a non-flammable rigid foam and use of the rigid foam as a building material
Assignee: Individual
•
Filing: 1984-10-31
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Granted: 1985-07-30
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Expires: 2004-10-31
Abstract
Abstract There is disclosed a non-flammable rigid foam on the basis of phenolic resin and furane resin, containing aluminum hydroxide and further components as a filler system. The weight ratio of resin substance:filler substance is at least 1:2.5 and up to 1:3.2 and the bulk density is from 50 kg/m 3 to 450 kg/m 3 . The resin compound is the reaction product obtained by the reaction with one another of 50-62 weight parts resolic resin 0-15 weight parts furanic resin 25-40 weight parts furfuryl alcohol 0.5-1.5 weight parts foam stabilizer including 14-17 parts by weight per 100 parts by weight of resin component+filler substance of a curing agent mixture composed of 40-50 weight parts phosphoric acid 12-17 weight parts boron hydrofluoric acid 6-7 weight parts p-toluene sulfonic acid or p-phenol sulfonic acid and 32-35 weight parts water, wherein the filler system is composed of: 40-50 weight parts aluminum hydroxide; 10-20 weight parts boric acid; 7-25 weight parts cryolite; 1-3 weight parts copper-II oxide; and 2-5 weight parts sodium tetraborate or a filler component selected from the group consisting of zinc borate, magnesium hydroxide, zinc hydroxide and mixtures thereof, the ratio of borate or said filler component:boric acid being 1:5.
Inventors
- 👤 Erich Ruhl
- 👤 Johann Thenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:02
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/141; C08G; C08G16/00; C08G16/02; C08G16/025; C08G16/0256; C08G16/0262; C08J9/143; C08J9/147; C08K; C08K3/00; C08K3/01; C08K3/013; C08K3/18; C08K3/20; C08K3/22; C08K3/38; C08L; C08L61/00; C08L61/34; C08J2361/00; C08J2361/34; Y; Y10; Y10S; Y10S521/00; Y10S521/907
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
182 words
A non-flammable rigid foam on the basis of phenolic resin and furane resin, containing aluminum hydroxide and further components as a filler system, the weight ratio of resin substance : filler substance is at least 1:2.5 and up to 1:3.2 and the bulk density is from 50 kg/m 3 to 450 kg/m 3 and the resin compound is the reaction product obtained by the reaction with one another of 50-62 weight parts resolic resin 0-15 weight parts furanic resin 25-40 weight parts furfuryl alcohol 0.5-1.5 weight parts foam stabilizer including 14-17 parts by weight per 100 parts by weight of resin component + filler substance of a curing agent mixture composed of 40-50 weight parts phosphoric acid 12-17 weight parts boron hydrofluoric acid 6-7 weight parts p-toluene sulfonic acid or p-phenol sulfonic acid and 32-35 weight parts water, wherein the filler system is composed of: 40-50 weight parts aluminum hydroxide; 10-20 weight parts boric acid; 7-25 weight parts cryolite; 1-3 weight parts copper-II oxide; and 2-5 weight parts sodium tetraborate the ratio of borate: boric acid being 1:5 in said filler system.
Claim 2
Dependent Claim
182 words
A non-flammable rigid foam on the basis of phenolic resin and furane resin, containing aluminum hydroxide and further components as a filler system, the weight ratio of resin substance : filler substance is at least 1:2.5 and up to 1:3.2 and the bulk density is from 50 kg/m 3 to 450 kg/m 3 and the resin compound is the reaction product obtained by the reaction with one another of 50-62 weight parts resolic resin 0-15 weight parts furanic resin 25-40 weight parts furfuryl alcohol 0.5-1.5 weight parts foam stabilizer including 14-17 parts by weight per 100 parts by weight of resin component + filler substance of a curing agent mixture composed of 40-50 weight parts phosphoric acid 12-17 weight parts boron hydrofluoric acid 6-7 weight parts p-toluene sulfonic acid or p-phenol sulfonic acid and 32-35 weight parts water, wherein the filler system is composed of: 40-50 weight parts aluminum hydroxide; 10-20 weight parts boric acid; 7-25 weight parts cryolite; 1-3 weight parts copper-II oxide; and 2-5 weight parts sodium tetraborate the ratio of borate: boric acid being 1:5 in said filler system.
Claim 3
Dependent Claim
29 words
The non-flammable rigid foam according to claim 1 wherein said sodium tetraborate in said filler system is replaced by zinc borate, magnesium hydroxide, zinc hydroxide or a mixture thereof.
Claim 4
Dependent Claim
16 words
The non-flammable rigid foam according to claim 1 containing 2-5 weight parts of said filler compound.
Claim 5
Dependent Claim
47 words
The non-flammable rigid foam according to claim 1 wherein a portion of the aluminum hydroxide is replaced by acid activated bentonite, montmorrilonite or zeolite whereby the filler system contains 30 - 45 weight parts aluminum hydroxide combined with 5 - 15 weight parts bentonite, montmorrilonite or zeolite.
Claim 6
Dependent Claim
41 words
The non-flammable rigid foam according to claim 4 wherein said aluminum hydroxide, acid activated bentonite, montmorillonite and zeolite have a screen analysis curve according to the following screen passing data: ______________________________________
25% 5.5 μm
50% 52.0 μm
75% 80.0 μm
______________________________________
Claim 7
Dependent Claim
63 words
The non-flammable rigid foam according to claim 1 wherein a portion of the aluminum hydroxide is replaced by magnesium aluminate, zinc aluminate, natural spinels, ground blast furnace slag or natural perlites whereby the filler system contains 20 - 40 weight parts aluminum hydroxide combined with 10 - 30 weight parts magnesium aluminate, zinc aluminate, natural spinels, ground blast furnace slag or natural perlites.
Claim 8
Dependent Claim
48 words
The non-flammable rigid foam according to claim 6 wherein said aluminum hydroxide, magnesium aluminate, zinc aluminate, natural spinels, ground blast furnace slag and natural perlites have a screen analysis curve according to the following screen passing data: ______________________________________
25% 5.5 μm
50% 52.0 μm
75% 80.0 μm
______________________________________
Claim 9
Dependent Claim
16 words
The non-flammable rigid foam according to claim 7 wherein the foam stabilizer is pyrogenic silicic acid.
Claim 10
Dependent Claim
16 words
The non-flammable rigid foam according to claim 6 wherein the foam stabilizer is pyrogenic silicic acid.
Claim 11
Dependent Claim
16 words
The non-flammable rigid foam according to claim 5 wherein the foam stabilizer is pyrogenic silicic acid.
Claim 12
Dependent Claim
16 words
The non-flammable rigid foam according to claim 4 wherein the foam stabilizer is pyrogenic silicic acid.
Claim 13
Dependent Claim
16 words
The non-flammable rigid foam according to claim 3 wherein the foam stabilizer is pyrogenic silicic acid.
Claim 14
Dependent Claim
16 words
The non-flammable rigid foam according to claim 2 wherein the foam stabilizer is pyrogenic silicic acid.
Claim 15
Dependent Claim
16 words
The non-flammable rigid foam according to claim 1 wherein the foam stabilizer is pyrogenic silicic acid.
Claim 16
Dependent Claim
16 words
The method which comprises utilizing the rigid foam of claim 1 as a non-flammable building material.
Claim 17
Dependent Claim
20 words
The method which comprises utilizing the rigid foam of claim 1 as pre-manufactured board, panel, half shell or pipe cladding.
Claim 18
Dependent Claim
17 words
The method which comprises injecting the rigid foam of claim 1 in situ into cavities in buildings.
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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |