 Entanglement-inhibited macromolecules |
| Applicants have discovered a polymer architecture which inhibits macromolecular entanglement. The ... |
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| Graft copolymers of para-alkylstyrene/isoolefin copolymers |
| This invention is initially based upon the discovery that the polymerization of these particular ... |
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| Self-adhering silicone compositions and preparations thereof |
| That which is claimed is: 1. A composition comprising a product obtained by mixing (A) vinyl-... |
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| Two-part reactive dielectric filler composition |
| OF THE INVENTION The encapsulant useful herein can be described, in its cured state, as ... |
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| Vegetable oil extended polyurethane systems |
| What is claimed is: 1. A vegetable oil extended polyurethane system consisting essentially of the ... |
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| Insulation displacing barrel terminal |
| The present invention utilizes insulation displacing technology to enable termination of a number ... |
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| Electrical connector containing adipic acid polyester sealant composition |
| What is claimed is: 1. A moisture-proof electrical connector for sealingly connecting transmission ... |
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| Sealant compositions and sealed electrical connectors |
| OF PREFERRED EMBODIMENTS THE COMPOSITIONS The present invention provides sealant compositions ... |
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| High voltage low current connector interface |
| The electrical connector of the present invention includes a first connector including a housing ... |
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| Compound for pinhole-free rotational casting |
| What is claimed is: 1. An olefin polymer-based composition adaptable for use in rotational molding ... |
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Method for producing aqueous polymer dispersions containing colorants
| Details |
Inventors: Mathauer, Klemens; Bohm, Arno; Machtle, Walter; Rossmanith, Peter; Kielhorn-Bayer, Sabine; Mullen, Klaus; Rohr, Ulrike; Raulfs, Friedrich-Wilhelm; Schlosser, Ulrike; Schrof, Wolfgang; Hanciogullari, Harutyun; Siemensmeyer, Karl; Delavier, Paul; Sens, Rudi
Assignee: BASF Aktiengesellschaft (Ludwigshafen, DE)
Primary Examiner: Lipman; Bernard
Assistant Examiner:
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
The present invention relates to a process for preparing dye-comprising aqueous polymer dispersions by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers in the presence of free-radical initiators, in which at least some of the monomers are employed in the form of an oil-in-water emulsion E1 whose disperse phase comprises at least one oil-soluble dye, wherein the disperse phase of E1 is formed essentially of dye-comprising monomer droplets having a diameter <500 nm. The present invention also relates to perylene dyes of the formula III as set forth in claim 35. The present invention relates in addition to dye-comprising formulations which comprise the dye-comprising polymers of the invention and to pigmented formulations which comprise a polymer of the invention comprising optical brightener. |
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DETAILED DESCRIPTION We claim: 1.
A process for preparing dye-comprising aqueous polymer dispersions by aqueous emulsion polymerization of ethylenically unsaturated monomers in the presence of free-radical initiators, in which process at least some of the monomers are employed in the form of an oil-in-water emulsion E1 whose disperse phase comprises at least one oil-soluble dye, wherein the disperse phase of E1 is formed essentially of dye-comprising monomer droplets having an average diameter <500 nm.
2.
A process as claimed in claim 1, wherein the ethylenically unsaturated monomers comprise at least one monoethylenically unsaturated monomer A having a water solubility >0.
01 g/l and at least one monoethylenically unsaturated monomer B having a water solubility <0.
01 g/l.
3.
A process as claimed in claim 1, wherein oil droplets of the oil-in-water emulsion E1 comprise a noncopolymerizable compound B' having a water solubility <0.
01 g/l.
4.
A process as claimed in claim 1, wherein the ethylenically unsaturated monomers comprise at least one monomer C which has at least two nonconjugated double bonds.
5.
A process as claimed in claim 4, wherein the ethylenically unsaturated monomers comprise at least one monoethylenically unsaturated monomer D which is different from the at least one monomer C and has a crosslinking action.
6.
A process as claimed in claim 1, wherein the oil-soluble dye is selected from the group consisting of oil-soluble derivatives of naphthalene, perylene, terrylene, quaterrylene, diketopyrrolopyrrole, from perinone dyes, coumarin dyes, oxazine dyes, anthracene dyes, azo dyes, anthraquinone dyes, methine dyes, azamethine dyes, isoindoline dyes and isoindolinone dyes, porphyrins, phthalocyanines and naphthalocyanines.
7.
A process as claimed in claim 1, wherein the oil-soluble dye is an optical brightener.
8.
A process as claimed in claim 7, wherein the optical brightener is selected from compounds from the classes of the bisstyrylbenzenes, stilbenes, benzoxazoles, coumarins, pyrenes and naphthalenes
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Adhesives and Rubbers 
