Patent US5583913A successfully refreshed from Google Patents.
Patent US4513133A successfully refreshed from Google Patents.
US4513133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction injection molded elastomers containing low molecular weight organic acids
Assignee: Huntsman Corp
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Filing: 1984-02-13
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Granted: 1985-04-23
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Expires: 2004-02-13
Abstract
Abstract The invention relates to reaction injection molded elastomers of improved green strength containing polyurea linkages derived from high molecular weight amine terminated polyethers, a chain extender, a polyisocyanate and a low molecular weight organic acid. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.
Inventors
- 👤 Richard J. G. Dominguez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:41
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/6692; C08G18/667; C08G2120/00
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
81 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of at least 2,500 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
Claim 2
Dependent Claim
81 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of at least 2,500 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
Claim 3
Dependent Claim
13 words
An elastomer as in claim 1 wherein the chain extender is amine terminated.
Claim 4
Dependent Claim
12 words
An elastomer as in claim 1 wherein the organic acid is acetic.
Claim 5
Dependent Claim
12 words
An elastomer as in claim 1 wherein the organic acid is salicylic.
Claim 6
Dependent Claim
12 words
An elastomer as in claim 1 wherein the organic acid is oxalic.
Claim 7
Dependent Claim
12 words
An elastomer as in claim 1 wherein the organic acid is itaconic.
Claim 8
Dependent Claim
12 words
An elastomer as in claim 1 wherein the organic acid is adipic.
Claim 9
Dependent Claim
81 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of greater than 4,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
Claim 10
Dependent Claim
81 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of greater than 4,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
Claim 11
Dependent Claim
13 words
An elastomer as in claim 8 wherein the chain extender is amine terminated.
Claim 12
Dependent Claim
12 words
An elastomer as in claim 8 wherein the organic acid is acetic.
Claim 13
Dependent Claim
12 words
An elastomer as in claim 8 wherein the organic acid is salicylic.
Claim 14
Dependent Claim
12 words
An elastomer as in claim 8 wherein the organic acid is oxalic.
Claim 15
Dependent Claim
12 words
An elastomer as in claim 8 wherein the organic acid is itaconic.
Claim 16
Dependent Claim
12 words
An elastomer as in claim 8 wherein the organic acid is adipic.
Claim 17
Dependent Claim
81 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of greater than 5,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
Claim 18
Dependent Claim
81 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of greater than 5,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
Claim 19
Dependent Claim
13 words
An elastomer as in claim 15 wherein the chain extender is amine terminated.
Claim 20
Dependent Claim
12 words
An elastomer as in claim 15 wherein the organic acid is acetic.
Claim 21
Dependent Claim
12 words
An elastomer as in claim 15 wherein the organic acid is salicylic.
Claim 22
Dependent Claim
12 words
An elastomer as in claim 15 wherein the organic acid is oxalic.
Claim 23
Dependent Claim
12 words
An elastomer as in claim 15 wherein the organic acid is itaconic.
Claim 24
Dependent Claim
12 words
An elastomer as in claim 15 wherein the organic acid is adipic.
Claim 25
Independent Claim
86 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising primary or secondary amine terminated polyethers of at least 2,500 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
Claim 26
Independent Claim
86 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising primary or secondary amine terminated polyethers of at least 2,500 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
Claim 27
Independent Claim
86 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising primary or secondary amine terminated polyethers of greater than 4,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
Claim 28
Independent Claim
86 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising primary or secondary amine terminated polyethers of greater than 4,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
Claim 29
Independent Claim
86 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising primary or secondary amine terminated polyethers of greater than 5,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
Claim 30
Independent Claim
86 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising primary or secondary amine terminated polyethers of greater than 5,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogens, a chain extender, an aromatic polyisocyanate and a low molecular weight organic acid in an amount effective to provide improved green strength, represented by the formulae: R(CO.sub.2 H).sub.n or (CO.sub.2 H).sub.2 where R=H or contains from 1 to 9-n carbon atoms and n=1-3.
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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) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |