US4012558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of flame-resistant boards, a flame-retardant mixture and a flame-retardant bonding composition containing the same
Assignee: Dead Sea Bromine Co Ltd
•
Filing: 1974-05-22
•
Granted: 1977-03-15
•
Expires: 1994-05-22
Abstract
Abstract Flame resistant boards of bonded wood sheets and/or lignocellulosic material wherein the boards are bonded with a bonding agent, such as a formaldehyde resin, and a flame retardant mixture comprising ammonium bromide, an organic phosphate such as urea phosphate and an amine derivative of a formaldehyde polymer such as hexamethylenetetramine whereby said amine derivative inhibits the rate of gelling of said bonding agent.
Inventors
- 👤 Eliahu Wurman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:10
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; E04B1/942; B; B27; B27D; B27D1/00; B27D1/04; C; C08; C08K; C08K3/00; C08K3/16; C08K5/00; C08K5/16; C08K5/34; C08K5/49; C08K5/51; C08K5/52; C08L; C08L97/00; C08L97/02; C09; C09J; C09J161/00; C09J161/20; C09J161/22; C09J161/24; C08L2201/00; C08L2201/02; C08L2666/00; C08L2666/28; C08L2666/54; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
60 words
A flame retardant mixture adapted for incorporation into the bonding agent used in the production of chipboard, plywood and the like consisting essentially of ammonium bromide, urea phosphate and hexamethylenetetraamine, said hexamethylenetetraamine being present in a sufficient amount to inhibit the rate of gelling of said bonding agent said ammonium bromide and urea phosphate being present in flame retarding amounts.
Claim 2
Dependent Claim
60 words
A flame retardant mixture adapted for incorporation into the bonding agent used in the production of chipboard, plywood and the like consisting essentially of ammonium bromide, urea phosphate and hexamethylenetetraamine, said hexamethylenetetraamine being present in a sufficient amount to inhibit the rate of gelling of said bonding agent said ammonium bromide and urea phosphate being present in flame retarding amounts.
Claim 3
Dependent Claim
27 words
A flame retardant composition according to claim 1 wherein the weight ratio of the ammonium bromide to urea phosphate to hexamethylenetetraamine is about 1:1:1 to about 1:1.8:1.48.
Claim 4
Dependent Claim
24 words
A flame retardant composition according to claim 1 wherein the weight ratio of the ammonium bromide to urea phosphate to hexamethylenetetraamine is about 25:37:37.
Claim 5
Dependent Claim
24 words
A flame retardant composition according to claim 1 wherein the weight ratio of the ammonium bromide to urea phosphate to hexamethylenetetraamine is about 25:45:30.
Claim 6
Dependent Claim
24 words
A flame retardant composition according to claim 1 wherein the weight ratio of the ammonium bromide to urea phosphate to hexamethylenetetraamine is about 25:42:33.
Claim 7
Dependent Claim
24 words
A flame retardant composition according to claim 1 wherein the weight ratio of the ammonium bromide to urea phosphate to hexamethylenetetraamine is about 1:1:1.
Claim 8
Dependent Claim
41 words
A flame retardant thermosetting bonding composition consisting essentially of a flame retarding amount of a flame retardant composition and phenol-formaldehyde resin, urea-formaldehyde resin, melamine-formaldehyde resin, or mixtures of said resins, said flame retardant composition being the composition according to claim 1.
Claim 9
Dependent Claim
17 words
A flame retardant thermosetting bonding composition according to claim 7 wherein said resin is a urea-formaldehyde resin.
Claim 10
Dependent Claim
23 words
A flame retardant thermosetting bonding composition according to claim 8 wherein said resin and said flame retardant compositiion are present in equal proportions.
Claim 11
Dependent Claim
29 words
A flame retardant thermosetting bonding composition according to claim 9 wherein the weight ratio of the ammonium bromide to urea phosphate to hexamethylenetetraamine is about 1:1:1 to about 1:1.8:1.48.
Claim 12
Dependent Claim
24 words
In flame resistant boards of bonded wood sheets and/or lignocellulosic material, the improvement wherein the bonding agent is a composition according to claim 7.
Claim 13
Dependent Claim
24 words
In flame resistant boards of bonded wood sheets and/or lignocellulosic material, the improvement wherein the bonding agent is a composition according to claim 8.
Claim 14
Dependent Claim
24 words
In flame resistant boards of bonded wood sheets and/or lignocellulosic material, the improvement wherein the bonding agent is a composition according to claim 9.
Claim 15
Dependent Claim
24 words
In flame resistant boards of bonded wood sheets and/or lignocellulosic material, the improvement wherein the bonding agent is a composition according to claim 10.
References Cited (Backward Citations)
CA796224A
Cited
US2452054A
Cited
US2520103A
Cited
US2784159A
Cited
US3811992A
Cited
US3762942A
Cited
US3819518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-14 | 1980-09-13 | 1981-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-14 | 1984-09-13 | 1985-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-14 | 1988-09-13 | 1989-03-15 | $7700.00 | Window Closed / Lapsed |