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Title: Synthesis of tetraalkyl vinylidene diphosphonate monomer

Abstract

A method of making a monomer of tetraalkyl vinylidene-1, 1-diphosphonate. The monomer is manufactured by combining an aqueous secondary amine solution with a formaldehyde and a tetra (alkyl) methylene diphosphonate. The resulting mixture is maintained at a pH above about 6 and refluxed for two hours to enable reaction to produce the monomer of tetraalkyl vinylidene-1, 1-diphosphonate. The product monomer is then purified to produce the final end product.

Inventors:
 [1]
  1. Knoxville, TN
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
868988
Patent Number(s):
5256808
Application Number:
07/985,974
Assignee:
University of Tennessee Research Corp. (Knoxville, TN)
Patent Classifications (CPCs):
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
DOE Contract Number:  
00222401
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
synthesis; tetraalkyl; vinylidene; diphosphonate; monomer; method; vinylidene-1; 1-diphosphonate; manufactured; combining; aqueous; secondary; amine; solution; formaldehyde; tetra; alkyl; methylene; resulting; mixture; maintained; ph; refluxed; hours; enable; reaction; produce; product; purified; final; resulting mixture; secondary amine; tetraalkyl vinylidene; /999/

Citation Formats

Alexandratos, Spiro D. Synthesis of tetraalkyl vinylidene diphosphonate monomer. United States: N. p., 1993. Web.
Alexandratos, Spiro D. Synthesis of tetraalkyl vinylidene diphosphonate monomer. United States.
Alexandratos, Spiro D. Tue . "Synthesis of tetraalkyl vinylidene diphosphonate monomer". United States. https://www.osti.gov/servlets/purl/868988.
@article{osti_868988,
title = {Synthesis of tetraalkyl vinylidene diphosphonate monomer},
author = {Alexandratos, Spiro D},
abstractNote = {A method of making a monomer of tetraalkyl vinylidene-1, 1-diphosphonate. The monomer is manufactured by combining an aqueous secondary amine solution with a formaldehyde and a tetra (alkyl) methylene diphosphonate. The resulting mixture is maintained at a pH above about 6 and refluxed for two hours to enable reaction to produce the monomer of tetraalkyl vinylidene-1, 1-diphosphonate. The product monomer is then purified to produce the final end product.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {10}
}

Patent:

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