US4717509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactive fire-protective formulation for rendering polyurethane rigid foam materials flame-resistant and process for preparing same
Assignee: Chemische Fabrik Kalk GmbH
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Filing: 1987-04-06
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Granted: 1988-01-05
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Expires: 2007-04-06
Abstract
Abstract Disclosed are a reactive fire-protective formulation containing halogen and phosphorous compounds for polyurethane rigid foam materials and a process for the preparation thereof. The formulation consists of a liquid homogeneous mixture of a polyether-polyol based on an aromatic amine or sorbitol or tetrol or a mixture thereof, a neopentane containing bromo and hydroxy groups and a compound containing phosphorus and nitrogen and is particularly suitable for the preparation of preformulated polyurethane systems (component A).
Inventors
- 👤 Walter Buttgens
- 👤 Utto Kerscher
- 👤 Ernst Neukirchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:34
CPC Classifications
C; C08; C08K; C08K5/00; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3802; C08G18/3804; C08G18/3806; C08G18/381; C08G18/2805; C08G18/288; C08G18/2885; C08G18/3878; C08G18/3889; C08G18/40; C08G18/48; C08G18/4829; C08G18/50; C08G18/5021; C08G18/5033; C08G18/64; C08G18/6461; C08G2110/00; C08G2110/0025; C08G2110/0041; C08G2110/005; Y; Y10; Y10S; Y10S521/00; Y10S521/904; Y10S521/906
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
48 words
A reactive fire-protective formulation for rigid polyurethane foam materials comprising a homogeneous liquid mixture of: a polyether-polyol based on an aromatic amine, or sorbitol, or tetrol, or mixtures thereof; a neopentane compound containing bromine and hydroxy groups; and a reaction product of diethanol amine and dimethyl methane phosphonate.
Claim 2
Dependent Claim
48 words
A reactive fire-protective formulation for rigid polyurethane foam materials comprising a homogeneous liquid mixture of: a polyether-polyol based on an aromatic amine, or sorbitol, or tetrol, or mixtures thereof; a neopentane compound containing bromine and hydroxy groups; and a reaction product of diethanol amine and dimethyl methane phosphonate.
Claim 3
Dependent Claim
73 words
A reactive fire-protective formulation for rigid polyurethane foam materials comprising a homogeneous mixture of: about 30 to 40 percent by weight of polyether-polyol based on an aromatic amine, or sorbitol, or tetrol, or a mixture thereof; about 55 to 65 percent by weight of a neopentane compound containing bromine and hydroxy groups; and about 8 to 12 percent by weight of a reaction product of equimolar amounts of diethanol amine and dimethyl methanephosphonate.
Claim 4
Dependent Claim
73 words
A reactive fire-protective formulation for rigid polyurethane foam materials comprising a homogeneous mixture of: about 30 to 40 percent by weight of polyether-polyol based on an aromatic amine, or sorbitol, or tetrol, or a mixture thereof; about 55 to 65 percent by weight of a neopentane compound containing bromine and hydroxy groups; and about 8 to 12 percent by weight of a reaction product of equimolar amounts of diethanol amine and dimethyl methanephosphonate.
Claim 5
Dependent Claim
23 words
A formulation, as claimed in claim 2, wherein the neopentane compound is dibromoneopentyl glycol or a mixture of 2-bromomethyl-2-hydroxymethyl-propanediol-1,3; 2,2-bis-(bromomethyl)-propanediol 1,3; and 3-bromo-2,2-bis-(bromomethyl)-propanol-1.
Claim 6
Dependent Claim
35 words
A formulation, as claimed in claim 3, wherein the mixture comprises: about 1-20 percent 2-bromomethyl-2-hydroxymethyl-propane diol-1,3,; about 60 to 85 percent 2,2-bis-(bromomethyl)-propane diol-1,3; and about 10 to 20% 3-bromo-2,2-bis-(bromomethyl)-propanol-1, all by weight of the mixture.
Claim 7
Dependent Claim
24 words
A formulation, as claimed in claim 2, wherein the reaction product is formed from substantially equimolar amounts of diethanol amine and dimethyl methane phosphonate.
Claim 8
Dependent Claim
80 words
A process for preparing the formulation of any of claims 1 to 5 comprising the steps of: heating the polyether-polyol based on an aromatic amine or sorbitol or tetrol or mixtures to a temperature of about 120°-140° C. to form a molten reaction medium; thereafter adding the neopentane compound and the reaction product to the reaction medium with agitation while maintaining the temperature of resulting formulation at about 120°-140° C.; and thereafter continuing agitation for a further period of time.
Claim 9
Dependent Claim
18 words
A process, as claimed in claim 6, wherein the period of time is at least about 30 minutes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |