Plural Phosphori Attached Indirectly To Each Other By Nonionic Bonding Patents (Class 562/12)
  • Patent number: 5281637
    Abstract: Flameproofed thermoplastic polyester molding material comprising(A) one or more thermoplastic polyesters,(B) a nitrogen-containing diphosphinic acid compound of the formula (I), and(C) with or without an amine,(D) with or without inorganic reinforcing agents, and(E) with or without processing auxiliaries.The nitrogen-containing diphosphinic acid compounds are effective even in relatively low concentrations and thus do not adversely affect the mechanical and electrical properties of the flameproofed polyester molding materials. The latter are used in the production of molded articles.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: January 25, 1994
    Assignee: Hoechst AG
    Inventor: Erich Blocker
  • Patent number: 5167866
    Abstract: This invention relates to controlling corrosion in aqueous systems and more particularly to using certain calcium insensitive phosphonomethyl amine oxide compounds. The compounds of this invention are water soluble phosphonomethyl amine oxides having at least one oxidized tertiary amine group of the formula: ##STR1## and water soluble salts thereof and having a cloud point of at least about 25 ppm.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: December 1, 1992
    Assignee: W. R. Grace & Co. Conn.
    Inventors: Chih M. Hwa, John A. Kelly, Janet Neton, Patricia M. Scanlon, Roger R. Gaudette
  • Patent number: 5159097
    Abstract: An alkenoic acid derivative of the formula ##STR1## in which X and Y are identical or different and represent sulfur, sulfoxide, sulfone, an alkylene chain, --SCH.sub.2 --, or oxygen or a direct bond,W represents --CH.dbd.CH--or --CH.sub.2 --CH.sub.2 --,o represents a number 1 to 5,A and B are identical or different and represent carboxyl, carboxymethylene, tetrazolyl or tetrazolylmethylene, or --CO.sub.2 R.sup.9 or --CH.sub.2 CO.sub.2 R.sup.9 or --CONR.sup.10 R.sup.11 or nitrilen represents a number 1 to 10,m represents a number 0 to 7,T and Z are identical or different and represent oxygen or a direct bond andR.sup.2, R.sup.3, R.sup.8 are identical or different and represent hydrogen, alkyl, alkoxy, halogen, trifluoromethyl, trifluoromethoxy, cyano or nitro andR.sup.9 is lower alkyl and R.sup.10 and R.sup.11 are hydrogen, lower alkyl, alkylsulfonyl or arylsulfonyl or together are an alkylene chain to form a ringand pharmaceutically acceptable salts thereof.
    Type: Grant
    Filed: November 26, 1990
    Date of Patent: October 27, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Rosentreter, Harold C. Kluender, Trevor S. Abram, Peter Norman, Steven R. Tudhope
  • Patent number: 5051532
    Abstract: This invention relates to novel organic phosphonate compounds which can be used as water treatment agents. More specifically, this invention relates to the compound N,N-bis-phosphonomethyl taurine N-oxide which may be represented by the formula: ##STR1## and its water soluble salts, which can be employed for the control of scale and/or corrosion.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: September 24, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Chih M. Hwa, John A. Kelly, Janet Neton, Patricia M. Scanlon, Roger R. Gaudette
  • Patent number: 4973744
    Abstract: This invention relates to novel organic phosphonate compounds, and more particularly to ethoxylated N,N-bis-phosphonomethyl 2-(hydroxy) ethylamine N-oxides and their water soluble salts. These novel organic phosphonates are useful as water treatment agents which can be employed for the control of scale and/or corrosion.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: November 27, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Chih M. Hwa, John A. Kelly, Mita Adhya
  • Patent number: 4950474
    Abstract: A series of water-dispersible corrosion and scale inhibiting solutions are disclosed which contain the reaction product of a phosphonate compound containing at least two phosphonate groups of the formula ##STR1## and an ethoxylated, propoxylated alkylphenol amine represented by the formula ##STR2## wherein R is an alkyl group containing about 5 to about 12 carbon atoms, X equals about 1 to about 20, and z equals about 1 to about 20.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: August 21, 1990
    Assignee: Texaco Inc.
    Inventors: Charles J. Hinrichsen, Frederick W. Valone