Cabot Corporation

About: Cabot Corporation is a company organization based out in Boston, Massachusetts, United States. It is known for research contribution in the topics: Carbon black & Carbon. The organization has 1279 authors who have published 1399 publications receiving 36736 citations.

Transparent polymer composites

Abstract: The invention provides a composite material comprising (a) a polymer precursor or polymer having a refractive index and (b) particles comprising (1) cores based on at least two metal oxides, wherein the cores comprise aggregates of primary particles, and (2) a surface-treating agent bonded to the cores. The difference between the refractive index of the polymer precursor or polymer and the refractive index of the particles is about 2% or less of the refractive index of the polymer precursor or polymer. The invention further provides processes for preparing such a composite material.

Carbon black burner

Abstract: An improved carbon black burner for producing a carbon black with reduced grit content wherein feedstock oil is introduced radially into an atomizing fluid conduit through ports located proximate the discharge orifice of the burner.

Silicate-based sintering aid and method

Abstract: The present invention is directed to a silicate-based sintering aid and a method for producing the sintering aid. The sintering aid, or frit, may be added to dielectric compositions, including barium titanate-based compositions, to lower the sintering temperature. The sintering aid may be a single or multi-component silicate produced via a precipitation reaction by mixing solutions including silicon species and alkaline earth metal species. The sintering aid can be produced as nanometer-sized particles, or as coatings on the surfaces of pre-formed dielectric particles. Dielectric compositions that include the sintering aid may be used to form dielectric layers in MLCCs and, in particular, ultra-thin dielectric layers.

Methods of forming an alkali metal salt

Abstract: A method of making an alkali metal salt is described and involves (1) reacting at least one alkali metal formate with an least one acid to form an alkali metal salt in the presence of formate ions and (2) substantially removing the formate ions from the alkali metal salt formed in step (1).

On the Origin of EL2 Intracenter Absorption Band in GaAs

Abstract: An alternative interpretation of optical absorption spectra due to intracenter transition within EL2 defect in GaAs is provided. The arguments are presented that states originating from the L-valley of the conduction band can account for the presence of the wide absorption band, the no-phonon line and the observed uniaxial stress splittings. Using the analogy to the DX center, this model presents an explanation for the existence of the metastable state of EL2.