US5081211A
Expired / Lapsed
US
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Polyisocyanate compositions
Assignee: Imperial Chemical Industries Ltd
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Filing: 1989-08-30
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Granted: 1992-01-14
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Expires: 2009-08-30
Abstract
Abstract Polyisocyanate compositions with useful properties are obtained by reacting uretonimine and/or carbodiimide modified polyisocyanates with carboxylic acids. The polyisocyanate compositions are useful in the preparation of elastomeric products.
Inventors
- 👤 Eduard F. Cassidy
- 👤 Jan W. Leenslag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:19
CPC Classifications
C; C08; C08L; C08L79/00; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/831; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/48; C08G18/4887; C08G18/50; C08G18/5021; C08G18/5024; C08G18/503; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6681; C08G18/6685; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/7806; C08G18/7818; C08G18/7837; C08G18/79; C08G18/797; C08G18/80; C08G18/8003; C08G18/8054; C08G2110/00; C08G2110/0008; C08G2110/0025; C08G2110/0041; C08G2115/00; C08G2115/02; C08G2120/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
94 words
A reaction system for use in making a reaction injection moulded elastomer, said system comprising the following components: A) a polyisocyanate composition which is the product of reacting a uretonimine and/or carbodiimide modified polyisocyanate with a carboxy terminated polycarboxylic acid polyether or polyester, and B) an isocyanate-reactive component comprising at least one softblock component selected from polyols, polyamines, imino-functional compounds, enamine-containing compounds and mixtures thereof having equivalent weights of at least 750 and at least one chain extender selected from polyols, polyamines, imino-functional compounds, enamine-containing compounds and mixtures thereof having equivalent weights below 750.
Claim 2
Dependent Claim
94 words
A reaction system for use in making a reaction injection moulded elastomer, said system comprising the following components: A) a polyisocyanate composition which is the product of reacting a uretonimine and/or carbodiimide modified polyisocyanate with a carboxy terminated polycarboxylic acid polyether or polyester, and B) an isocyanate-reactive component comprising at least one softblock component selected from polyols, polyamines, imino-functional compounds, enamine-containing compounds and mixtures thereof having equivalent weights of at least 750 and at least one chain extender selected from polyols, polyamines, imino-functional compounds, enamine-containing compounds and mixtures thereof having equivalent weights below 750.
Claim 3
Dependent Claim
25 words
A reaction system according to claim 1 wherein the chain extender comprises an aromatic diamine having a molecular weight from about 100 to about 400.
Claim 4
Dependent Claim
21 words
The reaction system of claim 1 wherein the uretonimine and/or corbodiimide modified polyisocyanate comprises a uretonimine and/or carbodiimide modified aromatic polyisocyanate.
Claim 5
Dependent Claim
22 words
The reaction system of claim 3 wherein the uretonimine and/or carbodiimide modified aromatic polyisocyanate comprises a uretonimine and/or carbodiimide modified diphenylmethane diisocyanate.
Claim 6
Dependent Claim
22 words
The reaction system of claim 1 wherein the carboxy terminated polycarboxylic acid polyether or polyester is liquid at 120° C. or below.
Claim 7
Dependent Claim
42 words
The reaction system of claim 1 wherein the polyisocyanate composition is the product of reacting a uretonimine and/or carbodiimide modified polyisocyanate with a polycarboxylic acid polyether which is a carboxy terminated polyether having one or more carboxy groups at each chain end.
Claim 8
Dependent Claim
50 words
The reaction system of claim 6 wherein the carboxy terminated polyether comprises a carboxy terminated reaction product of a polyoxyalkylene polyol having a hydroxyl functionality of from 2 to 8 and an average molecular weight of from 200 to 10,000 and a tricarboxylic acid anhydride or a tetracarboxylic acid dianhydride.
Claim 9
Dependent Claim
56 words
The reaction system of claim 1 wherein the polyisocyanate composition is the product of reacting a uretonimine and/or carbodiimide modified polyisocyanate with a carboxy terminated polycarboxylic acid polyether or polyester at a temperature below 120° C., in the absence of a catalyst, and with an initial ratio of uretonimine/carbodiimide to carboxy groups of at least 1:1.
References Cited (Backward Citations)
US3793268A
Cited
FR2259119A1
Cited
US4077989A
Cited
US4344855A
Cited
US4260718A
Cited
EP0032011A1
Cited
US4306052A
Cited
EP0099519A1
Cited
US4703100A
Cited
US4801644A
Cited
US4789791A
Cited
US4933416A
Cited
EP0287947A2
Cited
US5002830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |