US4433067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction injection molded elastomers prepared from amine terminated polyethers, amine terminated chain extender and aromatic polyisocyanate
Assignee: Huntsman Corp
•
Filing: 1982-04-23
•
Granted: 1984-02-21
•
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
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:04
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
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, an amine terminated chain extender and an aromatic polyisocyanate.
Claim 2
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, an amine terminated chain extender and an aromatic polyisocyanate.
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
12 words
An elastomer as in claim 1 wherein the polyisocyanate is a quasi-prepolymer.
Claim 8
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, an amine terminated chain extender and an aromatic polyisocyanate.
Claim 9
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, an amine terminated chain extender and an aromatic polyisocyanate.
Claim 10
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, an amine terminated chain extender and an aromatic polyisocyanate.
Claim 11
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, an amine terminated chain extender and an aromatic polyisocyanate.
Claim 12
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, an amine terminated chain extender and an aromatic polyisocyanate.
Claim 13
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, an amine terminated chain extender and an aromatic polyisocyanate.
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
12 words
A method as in claim 9 wherein the polyisocyanate is a quasi-prepolymer.
Claim 19
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, an amine terminated chain extender and an aromatic polyisocyanate.
Claim 20
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, an amine terminated chain extender and an aromatic polyisocyanate.
Claim 21
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, an amine terminated chain extender and an aromatic polyisocyanate.
Claim 22
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, an amine terminated chain extender and an aromatic polyisocyanate.
Claim 23
Dependent Claim
44 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, and an aromatic polyisocyanate.
Claim 24
Dependent Claim
44 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, and an aromatic polyisocyanate.
Claim 25
Dependent Claim
53 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, and an aromatic polyisocyanate.
Claim 26
Dependent Claim
53 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, and an aromatic polyisocyanate.
Claim 27
Dependent Claim
53 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, and an aromatic polyisocyanate.
Claim 28
Dependent Claim
53 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, and an aromatic polyisocyanate.
Claim 29
Independent Claim
44 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 and an aromatic polyisocyanate.
Claim 30
Independent Claim
44 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 and an aromatic polyisocyanate.
Claim 31
Independent Claim
54 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 and an aromatic polyisocyanate.
Claim 32
Independent Claim
54 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 and an aromatic polyisocyanate.
Claim 33
Independent Claim
54 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 and an aromatic polyisocyanate.
Claim 34
Independent Claim
54 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 and an aromatic polyisocyanate.
References Cited (Backward Citations)
GB1049644A
Cited
US3523918A
Cited
US3428610A
Cited
US3838076A
Cited
US3847992A
Cited
US4218543A
Cited
US4111861A
Cited
US4254069A
Cited
US4272618A
Cited
US4246363A
Cited
US4269945A
Cited
US4296212A
Cited
EP0069286A1
Cited
US4374210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |