Patent US3919166A successfully refreshed from Google Patents.
US3919166A
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US
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Fire retardant polyurethanes and polyurea-urethanes having improved processability and color stability
Assignee: ISP Investments LLC
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Filing: 1972-05-31
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Granted: 1975-11-11
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Expires: 1992-05-31
Abstract
Abstract a. retardant polyurethanes and polyureas comprising the reaction product of A AN ORGANIC COMPOUND CONTAINING ACTIVE HYDROGEN CONTAINING GROUPS REACTIVE WITH -NCO groups; B. AN ORGANIC POLYISOCYANATE; C. 2,3-DIBROMO-2-BUTENEDIOL-1,4; AND OPTIONALLY HAVING INCORPORATED THEREIN AS STABILIZER AN EPOXIDE; THE POLYURETHANE OR POLYUREA HAVING A BROMINE CONTENT OF FROM ABOUT 4 TO ABOUT 22 PERCENT BY WEIGHT, AN NCO/OH ratio of about 0.95 - 1.15:1, and an NH group content of from about 2.5 to about 6.0 percent by weight. The polymers are not only fire retardant and non-burning but retain the advantageous physical characteristics of the polyurethane or polyurea.
Inventors
- 👤 Armand Edward Brachman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:33
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08G18/677; C08G18/6775; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
93 words
A FIRE RETARDANT POLYRETHANE OR POLYUREA COMPOSITION HAVING IMPROVED PROCESSABILITY AND COLOR STABILITY COMPRISING THE REACTION PRODUCT OF: A. AN ORGANIC COMPOUND COMPONENT CONTAINIG A PLURALITY OF ACTIVE HYDROGEN-CONTAINING GROUPS REACTIVE WITH-NCO GROUPS, B. AN ORGANIC POLYISOCYANATE COMPONENT, AND C. 2,3-DIBROMO-2-BUTENEDIOL-1,4, SAID REACTION PRODUCT HAVING: I. A BROMINE CONTENT OF FROM ABOUT 4 TO ABOUT 22 PERCENT BY WEIGHT, II. AN NCO/OH RATIO OF ABOUT 0.95-1.15:1, AND HAVING INCORPORATED THEREIN ASSTABILIZER 0.5 TO 7 PERCENT BY WEIGHT OF THE COMPONENTS OF AN EPOXIDE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
93 words
A FIRE RETARDANT POLYRETHANE OR POLYUREA COMPOSITION HAVING IMPROVED PROCESSABILITY AND COLOR STABILITY COMPRISING THE REACTION PRODUCT OF: A. AN ORGANIC COMPOUND COMPONENT CONTAINIG A PLURALITY OF ACTIVE HYDROGEN-CONTAINING GROUPS REACTIVE WITH-NCO GROUPS, B. AN ORGANIC POLYISOCYANATE COMPONENT, AND C. 2,3-DIBROMO-2-BUTENEDIOL-1,4, SAID REACTION PRODUCT HAVING: I. A BROMINE CONTENT OF FROM ABOUT 4 TO ABOUT 22 PERCENT BY WEIGHT, II. AN NCO/OH RATIO OF ABOUT 0.95-1.15:1, AND HAVING INCORPORATED THEREIN ASSTABILIZER 0.5 TO 7 PERCENT BY WEIGHT OF THE COMPONENTS OF AN EPOXIDE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA
Claim 3
Dependent Claim
14 words
A composition according to claim 1 having a molecular weight of at least 15,000.
Claim 4
Dependent Claim
24 words
A composition of claim I wherein compound (A) is selected from the group consisting of polyesters, polyesters, polyacetals, polyamines, polythiols, polyamides, polycaprolactones, and polyesteramides.
Claim 5
Dependent Claim
13 words
A composition according to claim 3 wherein compound (A) is a linear polyether.
Claim 6
Dependent Claim
13 words
A composition according to claim 4 wherein said polyether is poly (tetramethyleneether) glycol.
Claim 7
Dependent Claim
13 words
A composition according to claim 3 wherein compound (A) is a linear polyester.
Claim 8
Dependent Claim
14 words
A composition according to claim 6 wherein said polyester is OH-terminated poly (1,4-butanediol adipate).
Claim 9
Dependent Claim
13 words
A composition according to claim 3 wherein compound (A) is a linear polyCaprolactone.
Claim 10
Dependent Claim
21 words
A composition according to claim 1 wherein said polyisocyanate is selected from the group consisting of aliphatic, cycloaliphatic and aromatic diisocyanates.
Claim 11
Dependent Claim
21 words
A composition according to claim 1 wherein said epoxide is included in amounts of from about 0.5 to about 5 percent.
Claim 12
Dependent Claim
13 words
A composition according to claim 10 wherein said polyisocyanate is an aromatic diisocyanate.
Claim 13
Dependent Claim
12 words
A composition according to claim 11 wherein said aromatic diisocyanate is 4,4''-diphenylmethanediisocyanate.
Claim 14
Dependent Claim
13 words
A composition according to claim 10 wherein said polyisocyanate is an alicyclic diisocyanate.
Claim 15
Dependent Claim
12 words
A composition according to claim 13 wherein said alicyclic diisocyanate is 4,4''-dicyclohexylmethanediisocyanate.
Claim 16
Dependent Claim
13 words
A composition according to claim 10 wherein said polyisocyanate is an aliphatic diisocyanate.
Claim 17
Dependent Claim
14 words
A composition according to claim 15 wherein said aliphatic diisocyanate is Alpha , omega-hexamethylenediisocyanate.
Claim 18
Dependent Claim
32 words
A composition according to claim 9 wherein said polyisocyanates is a mixture of aromatic and alicyclic polyisocyanates and contains up to about 85 percent by weight of said polyisocyanates of aromatic polyisocyanate.
Claim 19
Dependent Claim
25 words
A composition according to claim 1 wherein said polyurethane or polyurea has an NH group content of about 2.5 to about 6.0 percent by weight.
Claim 20
Dependent Claim
25 words
A composition according to claim 1 wherein said polyurethane or polyurea has a bromine content of about 10 percent to about 14 percent by weight.
Claim 21
Dependent Claim
16 words
A composition according to claim 1 wherein said epoxide is a mixed C14-16 Alpha -olefin epoxide.
Claim 22
Dependent Claim
41 words
A process for preparing the polymer of claim 10, comprising reacting said components (A), (B) and (C) and adding said epoxide (1) to the reaction medium after the reaction is at least 3/4 completed, or (2) to the completed reaction product.
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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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |