US4806615A
Expired / Lapsed
US
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Reaction injection molded elastomers prepared from amine terminated polyethers, a blend of an aromatic amine terminated chain extender, a substituted acyclic aliphatic amine terminated chain extender and an aromatic polyisocyanate
Assignee: Huntsman Corp
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Filing: 1987-06-01
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Granted: 1989-02-21
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Expires: 2007-06-01
Abstract
Abstract The invention is reaction injection molded (RIM) elastomer comprising a cured reaction product of primary or secondary amine terminated polyethers of greater than 1500 molecular weight, an aromatic polyisocyanate, a combination of an unsubstituted aromatic diamine chain extender and a substituted acyclic aliphatic diamine chain extender. The invention is also a method of preparation of a RIM polyurea elastomer as described above.
Inventors
- 👤 Doris M. Rice
- 👤 Robert A. Grigsby, Jr.
- 👤 Richard J. G. Dominguez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:02
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6681; C08G18/6685; C08G18/30; C08G18/32; C08G18/3225; C08G18/3228; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5024; C08G2120/00
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
66 words
A reaction injection molded elastomer made by reacting in a closed mold amine terminated polyethers of at least 1,500 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of an unsubstituted aromatic amine termianted chain extender and a N/N'-dialkylated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 2
Dependent Claim
66 words
A reaction injection molded elastomer made by reacting in a closed mold amine terminated polyethers of at least 1,500 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of an unsubstituted aromatic amine termianted chain extender and a N/N'-dialkylated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 3
Dependent Claim
25 words
An elastomer as in claim 1 where the percent of N,N'-dialkylated aliphatic amine chain extender to total chain extender ranges from about 5 to 25%.
Claim 4
Dependent Claim
66 words
A reaction injection molded elastomer made by reacting in a closed mole amine terminated polyethers of at least 2500 molecular weight and having a functionlity of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of an unsubstituted aromatic amine terminated chain extender and a N,N'-dialkyIated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 5
Dependent Claim
66 words
A reaction injection molded elastomer made by reacting in a closed mole amine terminated polyethers of at least 2500 molecular weight and having a functionlity of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of an unsubstituted aromatic amine terminated chain extender and a N,N'-dialkyIated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 6
Dependent Claim
25 words
An elastomer as in claim 3 where the percent of N,N'-dialkylated aliphatic amine chain extender to total chain extender ranges from about 5 to 25%.
Claim 7
Dependent Claim
66 words
A reaction injection molded elastomer made by reacting in a closed mold amine terminated polyethers of at least 5000 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of an unsubstituted aromatic amine terminated chain extender and a N,N'-dialkylated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 8
Dependent Claim
66 words
A reaction injection molded elastomer made by reacting in a closed mold amine terminated polyethers of at least 5000 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of an unsubstituted aromatic amine terminated chain extender and a N,N'-dialkylated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 9
Dependent Claim
25 words
An elastomer as in claim 5 where the percent of N,N'-dialkylated aliphatic amine chain extender to total chain extender ranges from about 5 to 25%.
Claim 10
Independent Claim
69 words
A method of making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 1500 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of an unsubstituted aromatic amine terminated chain extender and a N,N'-dialkylated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 11
Independent Claim
69 words
A method of making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 1500 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of an unsubstituted aromatic amine terminated chain extender and a N,N'-dialkylated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 12
Dependent Claim
25 words
A method as in claim 7 where the percent of N,N'-dialkylated aliphatic amine chain extender to total chain extender ranges from about 5 to 25%.
Claim 13
Independent Claim
69 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 2500 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of an unsubstituted aroamtic amine terminated chain extender and a N,N'-dialkylated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 14
Independent Claim
69 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 2500 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of an unsubstituted aroamtic amine terminated chain extender and a N,N'-dialkylated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 15
Dependent Claim
25 words
A method as in claim 9 where the percent of N,N'-dialkylated aliphatic amine chain extender to total chain extender ranges from about 5 to 25%.
Claim 16
Independent Claim
69 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 5,000 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogen in the form of amine hydrogens, a blend of an unsubstituted aromatic amine terminated chain extender and a N,N'-dialkylated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 17
Independent Claim
69 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 5,000 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogen in the form of amine hydrogens, a blend of an unsubstituted aromatic amine terminated chain extender and a N,N'-dialkylated aliphatic amine chain extender, and an aromatic polyisocyanate.
Claim 18
Dependent Claim
25 words
A method as in claim 11 where the percent of N,N'-dialkylated aliphatic amine chain extender to total chain extender ranges from about 4:1 to 20:1.
Claim 19
Independent Claim
60 words
A method for maddDd a deaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 1500 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of diethyltoluene diamine and N,N'-ditertiarybutyl ethylenediamine, and an aromatic polyisocyanate.
Claim 20
Independent Claim
60 words
A method for maddDd a deaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 1500 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form of amine hydrogens, a blend of diethyltoluene diamine and N,N'-ditertiarybutyl ethylenediamine, and an aromatic polyisocyanate.
Claim 21
Independent Claim
61 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 2500 molecular weight and having a functionality of from about 2 to 3, having greater than 50%, of their active hydrogens in the form of amine hydrogens, a blend of diethyltoluene diamine and and N,N'-ditertiarybutyl ethylenediamine, and an aromatic polyisocyanate.
Claim 22
Independent Claim
61 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 2500 molecular weight and having a functionality of from about 2 to 3, having greater than 50%, of their active hydrogens in the form of amine hydrogens, a blend of diethyltoluene diamine and and N,N'-ditertiarybutyl ethylenediamine, and an aromatic polyisocyanate.
Claim 23
Dependent Claim
60 words
A reaction injection molded elastomer produced from the step comprising reacting in a closed mold amine terminated polyethers of at least 1500 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form: of amine hydrogens, a blend of diethyltoluene diamine and N,N'-ditertiarylbutyl ethylenediamine, and an aromatic polyisocyanate.
Claim 24
Dependent Claim
60 words
A reaction injection molded elastomer produced from the step comprising reacting in a closed mold amine terminated polyethers of at least 1500 molecular weight and having a functionality of from about 2 to 3, having greater than 50% of their active hydrogens in the form: of amine hydrogens, a blend of diethyltoluene diamine and N,N'-ditertiarylbutyl ethylenediamine, and an aromatic polyisocyanate.
Claim 25
Independent Claim
60 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 5000 molecular weight and having a functionality of from about 2 to 3, having greater than 50d of their active hydrogens in the form of amine hydrogens, a blend of diethyltoluene diamine and N,N'-ditertiarybutyl ethylenediamine, and an aromatic polyisocyanate.
Claim 26
Independent Claim
60 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 5000 molecular weight and having a functionality of from about 2 to 3, having greater than 50d of their active hydrogens in the form of amine hydrogens, a blend of diethyltoluene diamine and N,N'-ditertiarybutyl ethylenediamine, and an aromatic polyisocyanate.
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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) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |