US4191706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic amine-amides and use as chain-extenders
Assignee: Huntsman Corp
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Filing: 1978-04-13
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Granted: 1980-03-04
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Expires: 1998-04-13
Abstract
Abstract Covers certain aromatic-amine amides which comprise the reaction product of a polyoxypropylene polyamine selected from the group consisting of diamines, triamines and mixtures thereof, and having an average molecular weight of 190 to about 3000 and an isatoic anhydride of the formula: ##STR1## where R is selected from the group consisting of hydrogen, alkyl, nitro, halo, hydroxy, amino, and cyano, and n is a number of 1-4. Also covers the use of said compounds as chain-extenders in polyurethane compositions. Such chain-extenders provide for the production of polyurethane elastomers having improved tensile strength, tear strength and elongation properties.
Inventors
- 👤 Edward T. Marquis
- 👤 Ernest L. Yeakey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:21
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/333; C08G65/33396; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5036; C08G18/5039
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
A compound comprising a reaction product of a polyoxypropylene polyamine selected from the group consisting of diamines, triamines and mixtures thereof, and having an average molecular weight of 190 to about 3000 and an isatoic anhydride of the formula: ##STR14## where R is selected from the group consisting of hydrogen, alkyl nitro, halo, hydroxy, amino, and cyano, and n is a number of 1-4.
Claim 2
Dependent Claim
64 words
A compound comprising a reaction product of a polyoxypropylene polyamine selected from the group consisting of diamines, triamines and mixtures thereof, and having an average molecular weight of 190 to about 3000 and an isatoic anhydride of the formula: ##STR14## where R is selected from the group consisting of hydrogen, alkyl nitro, halo, hydroxy, amino, and cyano, and n is a number of 1-4.
Claim 3
Dependent Claim
31 words
The compound of claim 1 having the following structural formula: ##STR15## where R 1 is hydrogen or: ##STR16## and x is an average number ranging from about 2 to about 40.
Claim 4
Dependent Claim
49 words
The compound of claim 1 which has the following structural formula: ##STR17## where R 2 is hydrogen or: ##STR18## where x, y and z represent average numbers ranging from about 1 to about 15 with the sum of x, y and z ranging from about 3 to about 50.
Claim 5
Dependent Claim
80 words
A polyurethane composition prepared by reacting an organic polyisocyanate with a polymeric polyhydroxy compound and a chain-extending agent comprising a reaction product of a polyoxypropylene polyamine selected from the group consisting of diamines, triamines and mixtures thereof, and having an average molecular weight of 190 to about 3000 and an isatoic anhydride of the formula: ##STR19## where R is selected from the group consisting of hydrogen, alkyl nitro, halo, hydroxy, amino, and cyano, and n is a number of 1-4.
Claim 6
Dependent Claim
80 words
A polyurethane composition prepared by reacting an organic polyisocyanate with a polymeric polyhydroxy compound and a chain-extending agent comprising a reaction product of a polyoxypropylene polyamine selected from the group consisting of diamines, triamines and mixtures thereof, and having an average molecular weight of 190 to about 3000 and an isatoic anhydride of the formula: ##STR19## where R is selected from the group consisting of hydrogen, alkyl nitro, halo, hydroxy, amino, and cyano, and n is a number of 1-4.
Claim 7
Dependent Claim
35 words
The polyurethane of claim 4 wherein said chain-extending agent has the following structural formula: ##STR20## where R 1 is hydrogen or: ##STR21## and x is an average number ranging from about 2 to about 40.
Claim 8
Dependent Claim
53 words
The polyurethane composition of claim 4 wherein said chain-extending agents has the following structural formula: ##STR22## where R 2 is hydrogen or: ##STR23## where x, y and z represent average numbers ranging from about 1 to about 15 with the sum of x, y and z ranging from about 3 to about 50.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |