US4623672A
Expired / Lapsed
US
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Isocyanate addition products and a process for their production
Assignee: Bayer AG
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Filing: 1985-08-05
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Granted: 1986-11-18
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Expires: 2005-08-05
Abstract
Abstract Flame retardant isocyanate addition products are made by reacting an isocyanate with a compound selected from the group consisting of 1-phosphonoethane-2-carboxylic acid-tri-C1-C4-alkyl esters, 1-phosphonopropane-2-carboxylic acid-tri-C1-C4-alkyl esters and mixtures thereof. Known isocyanate-reactive compounds, blowing agents, catalysts, additives and auxiliary agents may optionally be included in the reaction mixture. These flame retardant products are useful in construction applications such as insulation panels for roof insulation.
Inventors
- 👤 Roland Kleinstuck
- 👤 Rolf Wiedermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; Y; Y10; Y10S; Y10S521/00; Y10S521/906
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
44 words
A process for the production of a polyisocyanate addition product in which a polyisocyanate (a) is reacted with a compound (b) selected from the group consisting of 1-phosphonoethane-2-carboxylic acid-tri-C 1 -C 4 -alkyl esters, 1-phosphonopropane-2-carboxylic acid-tri-C 1 -C 4 -alkyl esters and mixtures thereof.
Claim 2
Dependent Claim
44 words
A process for the production of a polyisocyanate addition product in which a polyisocyanate (a) is reacted with a compound (b) selected from the group consisting of 1-phosphonoethane-2-carboxylic acid-tri-C 1 -C 4 -alkyl esters, 1-phosphonopropane-2-carboxylic acid-tri-C 1 -C 4 -alkyl esters and mixtures thereof.
Claim 3
Dependent Claim
26 words
The process of claim 1 in which compound (b) is used in a quantity of from 1 to 20 wt. %, based on polyisocyanate addition product.
Claim 4
Dependent Claim
26 words
The process of claim 1 in which compound (b) is used in a quantity of from 2 to 10 wt. %, based on polyisocyanate addition product.
Claim 5
Dependent Claim
25 words
The process of claim 1 in which compound (b) is selected from the group consisting of 1-phosphonoethane-2-carboxylic acid-trimethyl ester, 1-phosphonopropane-2-carboxylic acid-trimethyl ester and mixtures thereof.
Claim 6
Dependent Claim
41 words
The process of claim 1 in which an additional compound (c) containing at least two hydrogen atoms which are reactive with isocyanate groups and has a molecular weight of from 400 to 10,000 is reacted with polyisocyanate (a) and compound (b).
Claim 7
Dependent Claim
12 words
The process of claim 5 in which compound (c) contains hydroxyl groups.
Claim 8
Dependent Claim
17 words
The process of claim 6 in which a blowing agent (d) is included in the reaction mixture.
Claim 9
Dependent Claim
26 words
The process of claim 7 in which compound (b) is used in a quantity of from 1 to 20 wt. %, based on polyisocyanate addition product.
Claim 10
Dependent Claim
26 words
The process of claim 6 in which compound (b) is used in a quantity of from 1 to 20 wt. %, based on polyisocyanate addition product.
Claim 11
Dependent Claim
15 words
The process of claim 1 in which the polyisocyanate addition product is a polyurethane plastic.
Claim 12
Dependent Claim
15 words
The process of claim 1 in which the polyisocyanate addition product is a polyurethane foam.
Claim 13
Dependent Claim
15 words
The process of claim 1 in which the polyisocyanate addition product is a polyisocyanate plastic.
Claim 14
Dependent Claim
15 words
The process of claim 1 in which the polyisocyanate addition product is a polyisocyanate foam.
Claim 15
Dependent Claim
40 words
A polyisocyanate addition product which is the reaction product of a polyisocyanate (a) and a compound (b) selected from the group consisting of 1-phosphonoethane-2-carboxylic acid-tri-C 1 -C 4 -alkyl esters, 1-phosphonopropane-2-carboxylic acid-tri-C 1 -C 4 -alkyl esters and mixtures thereof.
Claim 16
Dependent Claim
40 words
A polyisocyanate addition product which is the reaction product of a polyisocyanate (a) and a compound (b) selected from the group consisting of 1-phosphonoethane-2-carboxylic acid-tri-C 1 -C 4 -alkyl esters, 1-phosphonopropane-2-carboxylic acid-tri-C 1 -C 4 -alkyl esters and mixtures thereof.
Claim 17
Dependent Claim
40 words
The polyisocyanate addition product of claim 14 in which (c) a compound containing at least two hydrogen atoms which are reactive with isocyanate groups and having a molecular weight of from 400 to 10,000 was included in the reaction mixture.
Claim 18
Dependent Claim
11 words
The polyisocyanate addition product of claim 14 which is a polyurethane.
Claim 19
Dependent Claim
16 words
The polyisocyanate addition product of claim 14 which is in the form of a polyurethane foam.
Claim 20
Dependent Claim
11 words
The polyisocyanate addition product of claim 14 which is a polyisocyanurate.
Claim 21
Dependent Claim
16 words
The polyisocyanate addition product of claim 14 which is in the form of a polyisocyanurate foam.
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) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |