Claims
- 1. Bisphosphinic acid anhydrides of the formula
- in which R is a saturated, open-chain branched or unbranched alkylene radical having from 1 to 10 carbon atoms, ##STR9## R.sup.1 and R.sup.2 represent identical or different alkyl groups having from 1 to 4 carbon atoms and m is an integer of greater than or equal to 1.
- 2. Bisphosphinic acid anhydrides of the formula ##STR10## in which R is a saturated unbranched alkylene radical having from 1 to 10 carbon atoms, ##STR11## R.sup.1 and R.sup.2 represent identical alkyl groups having from 1 to 4 carbon atoms and m is an integer of greater than or equal to 1.
- 3. Bisphosphinic acid anhydrides of claim 1 or 2 wherein the number of carbon atoms in R is 1 to 6.
- 4. Bisphosphinic acid anhydrides of claim 1 or 2 wherein the number of carbon atoms in R.sup.1 and R.sup.2 is 1 to 2.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2726479 |
Jun 1977 |
DEX |
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Parent Case Info
This application is a division of application Ser. No. 913,043 filed June 6, 1978 abandoned.
US Referenced Citations (2)
Foreign Referenced Citations (1)
Number |
Date |
Country |
193508 |
Mar 1967 |
SUX |
Non-Patent Literature Citations (3)
Entry |
Michaelis et al., "Ber," Jahreg VII, p. 1070 (1874). |
Kosolapoff et al., "J.A.C.S." 73:4101 (1951). |
Moedritzer, "J.A.C.S.," 83:4381 (1961). |
Divisions (1)
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Number |
Date |
Country |
Parent |
913043 |
Jun 1978 |
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