Patent US4444910A successfully refreshed from Google Patents.
US4444910A
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Reaction injection molded elastomers made using a polyurethane organometallic catalyst amine terminated polyethers amine terminated chain extender and aromatic polyisocyanate
Assignee: Huntsman Corp
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Filing: 1982-04-23
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Granted: 1984-04-24
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Expires: 2002-04-23
Abstract
Abstract The invention relates to reaction injection molded elastomers containing a major amount of polyurea linkages derived from high molecular weight amine terminated polyethers, an aromatic diamine chain extender and a polyisocyanate. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.
Inventors
- 👤 Doris M. Rice
- 👤 Richard J. G. Dominguez
- 👤 Rodney F. Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:20
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6681; C08G18/6685; C08G18/08; C08G18/10; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; Y; Y10; Y10S; Y10S264/00; Y10S264/83
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
50 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising amine terminated polyethers of greater than 1,500 average molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 2
Dependent Claim
50 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising amine terminated polyethers of greater than 1,500 average molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 3
Dependent Claim
20 words
An elastomer as in claim 1 wherein the amine terminated polyethers have an average molecular weight of at least 2,500.
Claim 4
Dependent Claim
20 words
An elastomer as in claim 1 wherein the amine terminated polyethers have a functionality ranging from about 2 to 6.
Claim 5
Dependent Claim
20 words
An elastomer as in claim 1 wherein the amine terminated polyethers have a functionality ranging from about 2 to 3.
Claim 6
Dependent Claim
24 words
An elastomer as in claim 1 wherein the amine terminated polyether is an aminated polyoxypropylene triol having an average molecular weight of about 5,000.
Claim 7
Dependent Claim
13 words
An elastomer as in claim 1 wherein the organometallic catalyst is dibutyltin dilaurate.
Claim 8
Dependent Claim
59 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising amine terminated polyethers of at least 2,500 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, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 9
Dependent Claim
59 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising amine terminated polyethers of at least 2,500 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, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 10
Dependent Claim
59 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising 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 hydrogens in the form of amine hydrogens, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 11
Dependent Claim
59 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising 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 hydrogens in the form of amine hydrogens, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 12
Independent Claim
50 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers greater than 1,500 average molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 13
Independent Claim
50 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers greater than 1,500 average molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 14
Dependent Claim
20 words
A method as in claim 9 wherein the amine terminated polyethers have an average molecular weight of at least 2,500.
Claim 15
Dependent Claim
20 words
A method as in claim 9 wherein the amine terminated polyethers have a functionality ranging from about 2 to 6.
Claim 16
Dependent Claim
20 words
A method as in claim 9 wherein the amine terminated polyethers have a functionality ranging from about 2 to 3.
Claim 17
Dependent Claim
24 words
A method as in claim 9 wherein the amine terminated polyether is an aminated polyoxypropylene triol having an average molecular weight of about 5,000.
Claim 18
Dependent Claim
13 words
A method as in claim 9 wherein the organometallic catalyst is dibutyltin dilaurate.
Claim 19
Independent Claim
59 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 2,500 molecular weight having a functionality of from about 2 to 3 having greater than 50% of their active hydrogens in the form of amine hydrogens, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 20
Independent Claim
59 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 2,500 molecular weight having a functionality of from about 2 to 3 having greater than 50% of their active hydrogens in the form of amine hydrogens, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 21
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 5,000 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, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 22
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 5,000 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, an amine terminated chain extender, an aromatic polyisocyanate and an organometallic catalyst.
Claim 23
Dependent Claim
47 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising amine terminated polyethers of greater than 1,500 average molecular weight, having greater than 50% of their active hydrogens in the form of amine hydrogens, diethyltoluene diamine, an aromatic polyisocyanate and an organometallic catalyst.
Claim 24
Dependent Claim
47 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising amine terminated polyethers of greater than 1,500 average molecular weight, having greater than 50% of their active hydrogens in the form of amine hydrogens, diethyltoluene diamine, an aromatic polyisocyanate and an organometallic catalyst.
Claim 25
Dependent Claim
56 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising amine terminated polyethers of at least 2,500 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, diethyltoluene diamine, an aromatic polyisocyanate and an organometallic catalyst.
Claim 26
Dependent Claim
56 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising amine terminated polyethers of at least 2,500 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, diethyltoluene diamine, an aromatic polyisocyanate and an organometallic catalyst.
Claim 27
Dependent Claim
56 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising 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 hydrogens in the form of amine hydrogens, diethyltoluene diamine, an aromatic polyisocyanate and an organometallic catalyst.
Claim 28
Dependent Claim
56 words
A reaction injection molded elastomer made by reacting in a closed mold ingredients comprising 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 hydrogens in the form of amine hydrogens, diethyltoluene diamine, an aromatic polyisocyanate and an organometallic catalyst.
Claim 29
Independent Claim
47 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers greater than 1,500 average molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, diethyltoluene diamine, an aromatic polyisocyanate and an organometallic catalyst.
Claim 30
Independent Claim
47 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers greater than 1,500 average molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, diethyltoluene diamine, an aromatic polyisocyanate and an organometallic catalyst.
Claim 31
Independent Claim
57 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 2,500 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, diethyltoluene diamine, an aromatic polysiocyanate and an organometallic catalyst.
Claim 32
Independent Claim
57 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers of at least 2,500 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, diethyltoluene diamine, an aromatic polysiocyanate and an organometallic catalyst.
Claim 33
Independent Claim
57 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 hydrogens in the form of amine hydrogens, diethyltoluene diamine, an aromatic polyisocyanate and an organometallic catalyst.
Claim 34
Independent Claim
57 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 hydrogens in the form of amine hydrogens, diethyltoluene diamine, an aromatic polyisocyanate and an organometallic catalyst.
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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) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |