US4487908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction injection molded elastomers containing anhydrides
Assignee: Huntsman Corp
•
Filing: 1984-02-13
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Granted: 1984-12-11
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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 an anhydride. 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
2026-10-31 19:56
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/6692; C08G18/667; C08G18/6681; C08G18/6685; C08K; C08K5/00; C08K5/04; C08K5/09; C08G2120/00
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
120 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 hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR5## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR6## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR7## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
Claim 2
Dependent Claim
120 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 hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR5## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR6## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR7## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
Claim 3
Dependent Claim
34 words
An elastomer as in claim 1 wherein the anhydrides are represented by the formula: ##STR8## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally be a monocyclic ring system.
Claim 4
Dependent Claim
14 words
An elastomer as in claim 1 wherein the anhydride is an alkenyl succinic anhydride.
Claim 5
Dependent Claim
13 words
An elastomer as in claim 3 wherein the anhydride is dodecenyl succinic anhydride.
Claim 6
Dependent Claim
13 words
An elastomer as in claim 3 wherein the anhydride is octadecenyl succinic anhydride.
Claim 7
Dependent Claim
120 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of at least 4,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR9## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR10## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR11## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
Claim 8
Dependent Claim
120 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of at least 4,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR9## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR10## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR11## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
Claim 9
Dependent Claim
34 words
An elastomer as in claim 1 wherein the anhydrides are represented by the formula: ##STR12## where R,R' is H and/or C 1-6 alkyl or alkenyl and R--C--C--R' may optionally be a monocyclic ring system.
Claim 10
Dependent Claim
14 words
An elastomer as in claim 6 wherein the anhydride is an alkenyl succinic anhydride.
Claim 11
Dependent Claim
13 words
An elastomer as in claim 8 wherein the anhydride is dodecenyl succinic anhydride.
Claim 12
Dependent Claim
13 words
An elastomer as in claim 8 wherein the anhydride is octadecenyl succinic anhydride.
Claim 13
Dependent Claim
120 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of at least 5,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR13## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR14## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR15## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
Claim 14
Dependent Claim
120 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of at least 5,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR13## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR14## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR15## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
Claim 15
Dependent Claim
34 words
An elastomer as in claim 11 wherein the anhydrides are represented by the formula: ##STR16## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally be a monocyclic ring system.
Claim 16
Dependent Claim
14 words
An elastomer as in claim 11 wherein the anhydride is an alkenyl succinic anhydride.
Claim 17
Dependent Claim
13 words
An elastomer as in claim 13 wherein the anhydride is dodecenyl succinic anhydride.
Claim 18
Dependent Claim
13 words
An elastomer as in claim 13 wherein the anhydride is octadecenyl succinic anhydride.
Claim 19
Independent Claim
125 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 hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR17## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR18## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR19## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
Claim 20
Independent Claim
125 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 hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR17## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR18## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR19## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
Claim 21
Independent Claim
125 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 4,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR20## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR21## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR22## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
Claim 22
Independent Claim
125 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 4,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR20## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR21## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR22## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
Claim 23
Independent Claim
125 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 5,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR23## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR24## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR25## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
Claim 24
Independent Claim
125 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 5,000 molecular weight having greater than 50% of their active hydrogens in the form of amine hydrogen, a chain extender, an aromatic polyisocyanate and an anhydride or mixture of anhydrides in an amount effective to provide improved green strength, represented by the formulae: a. ##STR23## where R,R' is branched or linear C 1-22 alkyl or aryl, or b. ##STR24## where R,R' is H and/or C 1-22 alkyl or alkenyl and R--C--C--R' may optionally constitute a monocyclic ring system, or c. ##STR25## where R,R' is H and/or C 1-6 alkyl, including cycloaliphatics or where R--C--C--R' are an aromatic ring system.
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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) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |