Title:
METHOD FOR PRODUCING A CROSS-LINKED POLYMER COMPOSITION WITH COLORING AGENTS FOR ELECTROPHOTOGRAPHIC TONER
Document Type and Number:
WIPO Patent Application WO1999015577
Kind Code:
B1
Abstract:
The invention relates to a method for producing a polymer composition in which at least 1) a polymerization of a mixture comprised of a) from 60 to 99.999 wt. % styrene or a styrene derivative of general formula (I), wherein R1, R2, R3 are each independent of one another, represent hydrogen, methyl or ethyl, and denote n 1 or 2 or a mixture of two or more thereof; b) 0 to 40 wt. % of a C1-C12 alkyl ester of acrylic or methacrylic acid, acrylonitrile or methacrylonitrile, acrylamide or methacrylamide which can be substituted on the amide nitrogen by one or two C1-C4 alkyl groups, maleinic acid anhydride or maleinic acid imide, which can be substituted on the imide nitrogen by one C1-C4 alkyl group or a mixture thereof; and c) 0 to 20 wt. % of one or more hydroxy containing acrylate or methacrylate derivatives; d) 0.001 to 20 wt. % of a monomer comprising two or more radical polymerizable functional groups as a cross-linker to obtain the prepolymer A, whereby, when the monomer component (c) is absent, hydroxyl groups in A are incorporated by using regulators containing hydroxyl groups. 2) A polycondensation of a mixture is carried out in which said mixture is comprised of alpha ) 5 to 95 wt. % of the prepolymer A, beta ) 0 to 95 wt. % of one polyol, one polyester or one polamide or a mixture thereof, and gamma ) 5 to 95 wt. % of at least one aliphatic or aromatic carboxylic acid with at least two carboxylic groups or esters of C1-C20 hydrocarbon alcohols in the molecule or at least one anhydride or a mixture thereof.
Inventors:
BAUER STEPHAN (DE)
CZECH ERWIN (DE)
NEUSS MICHAEL (DE)
CZECH ERWIN (DE)
NEUSS MICHAEL (DE)
Application Number:
PCT/EP1998/005538
Publication Date:
May 20, 1999
Filing Date:
September 01, 1998
Export Citation:
Assignee:
BASF AG (DE)
BAUER STEPHAN (DE)
CZECH ERWIN (DE)
NEUSS MICHAEL (DE)
BAUER STEPHAN (DE)
CZECH ERWIN (DE)
NEUSS MICHAEL (DE)
International Classes:
C08G63/02; C08G81/02; C08L25/02; C08L77/00; G03G9/087; (IPC1-7): C08G81/02; G03G9/087
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