Modified polyethylenephosphinic acids and their salts

Details Modified polyethylenephosphinic acids and their salts Modified polyethylenephosphinic acids and their salts

2008-03-25

2008-03-25

Truong, Duc (Department: 1796)

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

Synthetic resins

From phosphorus-containing reactant

C528S489000, C528S497000, C525S538000, C562S020000, C526S274000, C526S275000

Reexamination Certificate

active

11540476

ABSTRACT:
The invention relates to polymeric phosphinic acids and their salts of the formula (I)whereX is hydrogen or 1/m of a metal of valency m, or is a protonated nitrogen base,R1and R2are identical or different and are hydrogen, a carboxy group, a carboxylic acid derivative, an unsubstituted or substituted alkyl group having from 1 to 10 carbon atoms, phenyl, benzyl, or alkyl-substituted aromatic systems, R3and R4may be identical or different and are an unsubstituted or substituted alkyl group having from 2 to 20 carbon atoms, or are OX, with the above meaning for X, and ū is the average number of monomer units.The invention further relates to a process for preparing the abovementioned compounds, and to their use.

REFERENCES:
patent: 6300516 (2001-10-01), Weferling et al.
patent: 6329544 (2001-12-01), Weferling et al.
patent: 6359171 (2002-03-01), Weferling et al.
patent: 6388125 (2002-05-01), Schmitz et al.
patent: 6569974 (2003-05-01), Sicken et al.
patent: 6583315 (2003-06-01), Sicken et al.
patent: 6600067 (2003-07-01), Sicken et al.
patent: 6600068 (2003-07-01), Sicken et al.
patent: 6727335 (2004-04-01), Sicken et al.
patent: 2003/0216533 (2003-11-01), Sicken et al.
patent: 19851618 (1999-06-01), None
patent: 19912920 (2000-09-01), None
patent: WO 01/57050 (2001-08-01), None
Sicken et al., “Polymeric Phosphinic Acids and Their Salts”, Chem. Abstract 133:267252 (2000).
Maier, “synthesis and Properties of Bis (phosphonylethyl) phosphinates and the corresponding Acid,” Phosphorus, vol. 1, pp. 105-109 (1971).
Mastalerz, “Synthesis of some Ethylene-(P,P′-Dialky)—Diphosphinic Acids as New Potential Antimetabolites of Sucvcinic Acid,” Rocznike Chenmii Ann. Soc. Chim. Polonorum 38, pp. 61-64 (1964).
Block, “Polymeric Metal Phosphinates” Inorganic Macromolecules Reviews, pp. 115-125 (1970).
Nifant'ev et al., “Reactions of Acetylenes with Hypophosphorous and Phosphonous Acids” Zh. Obshch. Kim. 56(4), pp. 773-781 (1986) [English Translation].
EPO Search Report for EP 04004107, mailed Jul. 2, 2004.

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