A black photosensitive resin composition includes (A) pigment dispersion including at least two kinds of carbon black having different oil absorption from each other; (B) a binder resin; (C) a photopolymerizable monomer; (D) a photopolymerization initiator; and (E) a solvent. A light-blocking layer can be formed using the same.

Black Photosensitive Resin Composition and Light Blocking Layer Using the Same

The present invention relates to a method of selecting and/or developing particulate material for a composition comprising the particulate material and a matrix by using at least one homogeneous interaction parameter alone or in combination with at least one heterogeneous interaction parameter. These parameters may comprise at least one interfacial potential property value, at least one value derived from an interfacial potential property value, at least one component of an interfacial potential property value, or combinations thereof for a particulate material and for the matrix. Process and performance maps, as well as methods for mapping, are also disclosed.

Methods of selecting and developing a particulate material

Carbon blacks which are useful in a variety of polymer compounds including ABS compounds are described, as well as methods of making the carbon blacks and polymer compounds. The carbon blacks provide desirable jetness and impact strength, as well as good dispersion in a polymer.

Carbon blacks and polymers containing the same

The present invention provides improved apparatus for determining the processing characteristics, in particular the mixing characteristics, of materials having plastic properties. The apparatus comprises a mixing chamber having a pair of contrarotating, differential speed, mixing rotors therein adapted to be rotated by an electric motor, transducer means for providing an electrical signal dependant upon the torque applied by the motor to the rotors, and continuous recorder means arranged to receive said electrical signal to provide a record of the torque applied. The invention also provides a rotor design for use in the above apparatus which results in improved mixing characteristics and in more reproducible results from the apparatus.

Apparatus for determining the processing characteristics of plastic type materials

The present invention relates to a method of providing product consistency of a particulate material or the product containing the same, by measuring and/or analyzing at least one interfacial potential property value of the particulate material. The method may be used as a QA/QC method to insure product consistency.

Vincent A Sljaka

Papers

Method for determining properties of carbon blacks