Alpha-aminomethylene phosphonate betaines and polymers prepared

Details Alpha-aminomethylene phosphonate betaines and polymers prepared Alpha-aminomethylene phosphonate betaines and polymers prepared

1987-07-13

1988-10-18

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526278, C08L 2304

Patent

active

047788658

ABSTRACT:
Alpha-aminoethylene phosphonate betaines of the formula ##STR1## R.sup.1 is hydrogen or methyl; X is ##STR2## a is 0, 1, 2 or 3, with the condition that when X is ##STR3## that a be greater than 1; R.sup.2 and R.sup.3 are independently C.sub.1 -C.sub.6 alkyl, aryl, benzyl, or cyclohexyl;

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The Direct Synthesis of .alpha.-Aminomethylphosphonic Acids. Mannich-Type Reactions with Orthophosphorus Acid, K. Moedritzer and R. R. Irani, J. of Organic Chemistry 31, p. 1603, May 1966.

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