Abstract:
A chemical mechanical polishing (CMP) composition comprising: (A) inorganic particles, organic particles, or a mixture or composite thereof, (B) at least one type of an organic polymeric compound as a dispersing agent or charge reversal agent comprising a phosphonate (P(=O)(OR1)(OR2) ) or phosphonic acid ( P(=O)(OH)2) moiety or their deprotonated forms as pendant groups, wherein R 1 is alkyl, aryl, alkylaryl, or arylalkyl, R 2 is H, alkyl, aryl, alkylaryl, or arylalkyl, and (C) an aqueous medium.
Abstract:
The invention relates to hollow bodies with an improved barrier effect, wherein the hollow bodies are composed of a three-layer sandwich structure with a casing made of polystyrene and a middle layer as a damping barrier.
Abstract:
The invention relates to a method for producing molded parts from nanoporous polymer materials, comprising the following steps: a) producing a multiphase polymer mixture having domains in the range between 5 to 200 nm, b) impregnating the polymer mixture with an expanding agent, the solubility of the expanding agent during the phase forming the domains being at least twice as high as in the adjacent phases, c) expanding the multiphase polymer mixture comprising the expanding agent by introducing the polymer mixture into a cavity and expanding it therein, thus obtaining the molded part.
Abstract:
The invention relates to a method for producing molded parts from nanoporous polymer materials, comprising the following steps: a) producing a multiphase polymer mixture having domains in the range between 5 to 200 nm, b) impregnating the polymer mixture with an expanding agent, the solubility of the expanding agent during the phase forming the domains being at least twice as high as in the adjacent phases, c) expanding the multiphase polymer mixture comprising the expanding agent by introducing the polymer mixture into a cavity and expanding it therein, thus obtaining the molded part.
Abstract:
The invention relates to an initiator composition and method for anionic polymerisation, comprising at least one alkali metal hydride, selected from LiH, NaH and KH and at least one organoaluminium compound. The invention further relates to a method for anionic polymerisation of styrol or dienyl monomers using said initiator composition.
Abstract:
The invention relates to the use of a composition which contains a peroxide compound and a specific, generically defined copolymer, for bleaching teeth.