US4487912A
Expired / Lapsed
US
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Reaction injection molded elastomers containing acid amides
Assignee: Huntsman Corp
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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 derived from high molecular weight active hydrogen containing materials, a chain extender, a polyisocyanate and an acid amide as an internal mold release agent imparting superior hot tear strength. The reaction injection molded (RIM) elastomers of this invention are useful, for example, as automobile body parts.
Inventors
- 👤 Robert L. Zimmerman
- 👤 Richard J. G. Dominguez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:10
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6681; C08G18/6685; C08G18/30; C08G18/38; C08G18/3819; C08G18/3823; C08G18/3825; C08K; C08K5/00; C08K5/16; C08K5/20; C08G2120/00; C08G2125/00
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
43 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising a high molecular weight active hydrogen containing material, a chain extender, an aromatic polyisocyanate and an acid amide in an amount effective to provide improved mold release and hot tear properties.
Claim 2
Dependent Claim
43 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising a high molecular weight active hydrogen containing material, a chain extender, an aromatic polyisocyanate and an acid amide in an amount effective to provide improved mold release and hot tear properties.
Claim 3
Dependent Claim
18 words
An elastomer as in claim 1 wherein there is also present a carboxyl functional dimethyl polysiloxane release agent.
Claim 4
Dependent Claim
87 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising a high molecular weight active hydrogen containing material, a chain extender, an aromatic polyisocyanate and a compound represented by the formula: ##STR8## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 5
Dependent Claim
87 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising a high molecular weight active hydrogen containing material, a chain extender, an aromatic polyisocyanate and a compound represented by the formula: ##STR8## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 6
Dependent Claim
17 words
An elastomer of claim 3 wherein there is also present a carboxy functional dimethyl polysiloxane release agent.
Claim 7
Dependent Claim
106 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 an acid amide represented by the formula: ##STR9## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 8
Dependent Claim
106 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 an acid amide represented by the formula: ##STR9## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 9
Dependent Claim
35 words
An elastomer as in claim 5 wherein the acid amide is made by reacting dodecenyl succinic anhydride with the aminated product of a 10-12 carbon atom linear primary alcohol and two moles of propylene oxide.
Claim 10
Dependent Claim
17 words
An elastomer of claim 5 wherein there is also present a carboxy functional dimethyl polysiloxane release agent.
Claim 11
Dependent Claim
13 words
An elastomer as in claim 5 wherein the chain extender is amine terminated.
Claim 12
Dependent Claim
82 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising a polyol, a chain extender, an aromatic polyisocyanate and an acid amide represented by the formula: ##STR10## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 13
Dependent Claim
82 words
A reaction injection molded elastomer comprising the reaction product of ingredients comprising a polyol, a chain extender, an aromatic polyisocyanate and an acid amide represented by the formula: ##STR10## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 14
Dependent Claim
35 words
An elastomer as in claim 9 wherein the acid amide is made by reacting dodecenyl succinic anhydride with the aminated product of a 10-12 carbon atom linear primary alcohol and two moles of propylene oxide.
Claim 15
Dependent Claim
17 words
An elastomer of claim 9 wherein there is also present a carboxy functional dimethyl polysiloxane release agent.
Claim 16
Dependent Claim
106 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 hydrogens, a chain extender, an aromatic polyisocyanate and an acid amide represented by the formula: ##STR11## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 17
Dependent Claim
106 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 hydrogens, a chain extender, an aromatic polyisocyanate and an acid amide represented by the formula: ##STR11## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 18
Dependent Claim
35 words
An elastomer as in claim 12 wherein the acid amide is made by reacting dodecenyl succinic anhydride with the aminated product of a 10-12 carbon atom linear primary alcohol and two moles of propylene oxide.
Claim 19
Dependent Claim
17 words
An elastomer of claim 12 wherein there is also present a carboxy functional dimethyl polysiloxane release agent.
Claim 20
Dependent Claim
13 words
An elastomer as in claim 12 wherein the chain extender is amine terminated.
Claim 21
Independent Claim
48 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising a high molecular weight active hydrogen containing material, a chain extender, an aromatic polyisocyanate and an acid amide in an amount effective to provide improved mold release and hot tear properties.
Claim 22
Independent Claim
48 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising a high molecular weight active hydrogen containing material, a chain extender, an aromatic polyisocyanate and an acid amide in an amount effective to provide improved mold release and hot tear properties.
Claim 23
Independent Claim
92 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising a high molecular weight active hydrogen containing material, a chain extender, an aromatic polyisocyanate and a compound represented by the formula: ##STR12## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 24
Independent Claim
92 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising a high molecular weight active hydrogen containing material, a chain extender, an aromatic polyisocyanate and a compound represented by the formula: ##STR12## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 25
Independent Claim
111 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 an acid amide represented by the formula: ##STR13## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 26
Independent Claim
111 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 an acid amide represented by the formula: ##STR13## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 27
Independent Claim
87 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising a polyol, a chain extender, an aromatic polyisocyanate and an acid amide represented by the formula: ##STR14## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
Claim 28
Independent Claim
87 words
A method for making a reaction injection molded elastomer comprising reacting in a closed mold ingredients comprising a polyol, a chain extender, an aromatic polyisocyanate and an acid amide represented by the formula: ##STR14## where R 1 =H, alkyl, alkenyl; R 2 =H, alkyl, alkenyl; R 3 =alkyl, oxyalkyl, aryl, cyclic alkyl when combined with R 5 ; R 4 =oxyalkyl and R 5 =H, alkyl, oxyalkyl, cyclic alkyl when combined with R 3 in an amount effective to provide improved mold release and hot tear properties.
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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 |