US4499254A
Expired / Lapsed
US
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Reaction injection molded elastomers containing high molecular weight organic acids
Assignee: Texaco Inc
•
Filing: 1984-02-13
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Granted: 1985-02-12
•
Expires: 2004-02-13
Abstract
Abstract The invention relates to reaction injection molded elastomers derived from high molecular weight amine terminated polyethers, a chain extender, a polyisocyanate and a high molecular weight organic acid which add green strength and aid mold release. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.
Inventors
- 👤 Richard J. G. Dominguez
- 👤 Edward E. McEntire
- 👤 Carter G. Naylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:22
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; B; B29; B29C; B29C33/00; B29C33/56; B29C33/60; C08G18/28; C08G18/2805; C08G18/281; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5024; C08G18/65; C08G18/66; C08G18/6666; C08G18/6692; C08K; C08K5/00; C08K5/04; C08K5/09; B29C67/00; B29C67/24; B29C67/246; B29K; B29K2075/00; B29L; B29L2031/00; B29L2031/30; B29L2031/3055; C08G2120/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
103 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of greater than 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 carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
Claim 2
Dependent Claim
103 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising primary or secondary amine terminated polyethers of greater than 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 carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
Claim 3
Dependent Claim
13 words
An elastomer as in claim 1 where the chain extender is amine terminated.
Claim 4
Dependent Claim
12 words
An elastomer as in claim 1 where the acid is oleic acid.
Claim 5
Dependent Claim
103 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 carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
Claim 6
Dependent Claim
103 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 carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
Claim 7
Dependent Claim
13 words
An elastomer as in claim 4 where the chain extender is amine terminated.
Claim 8
Dependent Claim
12 words
An elastomer as in claim 4 where the acid is oleic acid.
Claim 9
Dependent Claim
103 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 carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
Claim 10
Dependent Claim
103 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 carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
Claim 11
Dependent Claim
13 words
An elastomer as in claim 7 where the chain extender is amine terminated.
Claim 12
Dependent Claim
12 words
An elastomer as in claim 7 where the acid is oleic acid.
Claim 13
Independent Claim
108 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 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 carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
Claim 14
Independent Claim
108 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 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 carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
Claim 15
Independent Claim
108 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 polyisocynate and a carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
Claim 16
Independent Claim
108 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 polyisocynate and a carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
Claim 17
Independent Claim
108 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 carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
Claim 18
Independent Claim
108 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 carboxylic acid in an amount effective to provide improved green strength, represented by the structure: R(CO.sub.2 H).sub.n where n=1-3 and where R contains 10-n carbon atoms or more and R may be alkyl (cyclic, linear or branched), alkaryl, aralkyl or aryl saturated or unsaturated, and also contain functional groups hydroxyl, chloro, bromo, ester, ether, nitro or amide.
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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) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |