Claims
- 1. A process for preparing oligomeric or polymeric methylphosphonamides which comprises heating a diaryl methylphosphonate with an amine until phenol corresponding to the aryl groups of the diaryl methylphosphonate is released.
- 2. A process as claimed in claim 1 where the heating is carried out at about 150.degree. C. to about 250.degree. C.
- 3. A process as claimed in claim 1 wherein the amine is of the formula RR'NH wherein R and R and the same or different and are selected from the group consisting of hydrogen, alkyl, substituted alkyl, aryl, and substituted aryl.
- 4. A process as claimed in claim 1 wherein an acid catalyst is also present.
- 5. The process of claim 1 wherein the product is further condensed to form products of the structure ##STR6## where x is greater than or equal to 2 and R is selected from the group consisting of hydrogen, alkyl, substituted alkyl, aryl, and substituted aryl.
- 6. The process of claim 1 wherein the product is further condensed to form products of the structure ##STR7## where R is selected from the group consisting of hydrogen, alkyl, substituted alkyl, aryl, and substituted aryl.
Parent Case Info
This is a continuation of U.S. Ser. No. 157,713, filed 6-9-80, now U.S. Pat. No. 4,456,566, which is a division of U.S. Ser. No. 72,966 filed 9-6-79, now U.S. Pat. No. 4,276,234, which is a division of U.S. Ser. No. 973,282, filed 12-26-78, now U.S. Pat. No. 4,207,271, which is a division of U.S. Ser. No. 615,321, filed 9-22-75 now U.S. Pat. No. 4,152,373.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3083222 |
Binder et al. |
Jul 1963 |
|
4456566 |
Honig et al. |
Jun 1964 |
|
Divisions (3)
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Number |
Date |
Country |
Parent |
072966 |
Sep 1979 |
|
Parent |
973282 |
Dec 1978 |
|
Parent |
615321 |
Sep 1975 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
157713 |
Jun 1980 |
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