Patent US4582887A successfully refreshed from Google Patents.
US4582887A
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Reaction injection molded elastomers
Assignee: Huntsman Corp
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Filing: 1984-08-30
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Granted: 1986-04-15
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Expires: 2004-08-30
Abstract
Abstract This invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers and/or high molecular weight polyols, a chain extender, a polyisocyanate, a chloro and/or isocyanate silane coupling agent, and untreated filler material. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.
Inventors
- 👤 Richard J. G. Dominguez
- 👤 David R. McCoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:38
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5024; C08K; C08K5/00; C08K5/54; C08K5/5406; C08G2120/00; Y; Y10; Y10S; Y10S264/00; Y10S264/83
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
51 words
A reaction injection molded elastomer made by reacting in a closed mold amine terminated polyethers of greater than 1,500 average molecular weight having greater than 50% of their active hydrogen in the form of amine hydrogens, a chain extender, a chloro silane coupling agent, untreated filler material, and an aromatic polyisocyanate.
Claim 2
Dependent Claim
51 words
A reaction injection molded elastomer made by reacting in a closed mold amine terminated polyethers of greater than 1,500 average molecular weight having greater than 50% of their active hydrogen in the form of amine hydrogens, a chain extender, a chloro silane coupling agent, untreated filler material, and an aromatic polyisocyanate.
Claim 3
Dependent Claim
13 words
An elastomer as in claim 1 wherein the filler material is glass based.
Claim 4
Dependent Claim
13 words
An elastomer as in claim 1 wherein the chain extender is diethyltoluene diamine.
Claim 5
Dependent Claim
12 words
An elastomer as in claim 1 wherein the polyisocyanate is a quasi-prepolymer.
Claim 6
Independent Claim
53 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers greater than 2,500 average molecular weight having greater than 50% of their active hydrogen in the form of amine hydrogens, a chain extender, a chloro silane coupling agent, untreated filler material and an aromatic polyisocyanate.
Claim 7
Independent Claim
53 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold amine terminated polyethers greater than 2,500 average molecular weight having greater than 50% of their active hydrogen in the form of amine hydrogens, a chain extender, a chloro silane coupling agent, untreated filler material and an aromatic polyisocyanate.
Claim 8
Dependent Claim
13 words
A method as in claim 5 wherein the filler material is glass based.
Claim 9
Dependent Claim
13 words
A method as in claim 5 wherein the chain extender is diethyltoluene diamine.
Claim 10
Dependent Claim
12 words
A method as in claim 5 wherein the polyisocyanate is a quasi-prepolymer.
Claim 11
Independent Claim
65 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, an amine terminated chain extender, a chloro silane coupling agent, untreated filler material and an aromatic polyisocynate.
Claim 12
Independent Claim
65 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, an amine terminated chain extender, a chloro silane coupling agent, untreated filler material and an aromatic polyisocynate.
Claim 13
Dependent Claim
13 words
A method as in claim 9 wherein the chain extender is diethyltoluene diamine.
Claim 14
Dependent Claim
13 words
A method as in claim 9 wherein the filler material is glass based.
Claim 15
Dependent Claim
38 words
A reaction injection molded elastomer made by reacting in a closed mold a polyether polyol having an equivalent weight of at least 500, a chain extender, a chloro silane coupling agent, untreated filler material and an aromatic polyisocyanate.
Claim 16
Dependent Claim
38 words
A reaction injection molded elastomer made by reacting in a closed mold a polyether polyol having an equivalent weight of at least 500, a chain extender, a chloro silane coupling agent, untreated filler material and an aromatic polyisocyanate.
Claim 17
Independent Claim
41 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold a polyether polyol having an equivalent weight of at least 500, a chain extender, a chloro silane coupling agent, untreated filler material and an aromatic polyisocyanate.
Claim 18
Independent Claim
41 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold a polyether polyol having an equivalent weight of at least 500, a chain extender, a chloro silane coupling agent, untreated filler material and an aromatic polyisocyanate.
Claim 19
Dependent Claim
51 words
A reaction injection molded elastomer made by reacting in a closed mold amine terminated polyethers of greater than 1,500 average molecular weight having greater than 50% of their active hydrogen in the form of amine hydrogens, a chain extender, an isocyanate silane coupling agent, untreated filler material, and an aromatic polyisocyanate.
Claim 20
Dependent Claim
51 words
A reaction injection molded elastomer made by reacting in a closed mold amine terminated polyethers of greater than 1,500 average molecular weight having greater than 50% of their active hydrogen in the form of amine hydrogens, a chain extender, an isocyanate silane coupling agent, untreated filler material, and an aromatic polyisocyanate.
Claim 21
Independent Claim
53 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 hydrogen in the form of amine hydrogens, a chain extender, an isocyanate silane coupling agent, untreated filler material and an aromatic polyisocyanate.
Claim 22
Independent Claim
53 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 hydrogen in the form of amine hydrogens, a chain extender, an isocyanate silane coupling agent, untreated filler material and an aromatic polyisocyanate.
Claim 23
Dependent Claim
38 words
A reaction injection molded elastomer made by reacting in a closed mold a polyether polyol having an equivalent weight of at least 500, a chain extender, an isocyanate silane coupling agent, untreated filler material and an aromatic polyisocyanate.
Claim 24
Dependent Claim
38 words
A reaction injection molded elastomer made by reacting in a closed mold a polyether polyol having an equivalent weight of at least 500, a chain extender, an isocyanate silane coupling agent, untreated filler material and an aromatic polyisocyanate.
Claim 25
Independent Claim
41 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold a polyether polyol having an equivalent weight of at least 500, a chain extender, an isocyanate silane coupling agent, untreated filler material and an aromatic polyisocyanate.
Claim 26
Independent Claim
41 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold a polyether polyol having an equivalent weight of at least 500, a chain extender, an isocyanate silane coupling agent, untreated filler material and an aromatic polyisocyanate.
References Cited (Backward Citations)
US3391054A
Cited
US3523918A
Cited
US3886226A
Cited
US3838076A
Cited
US3847992A
Cited
US4218543A
Cited
US4118536A
Cited
US4288563A
Cited
US4254010A
Cited
US4254069A
Cited
US4272618A
Cited
US4246363A
Cited
US4269945A
Cited
US4456718A
Cited
US4396729A
Cited
US4444910A
Cited
US4474900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |