Abstract:
A method and apparatus for storing and preparing a two component reactive acrylic adhesive in which a liquid acrylic resin (12) mixed with an organic peroxide (16) in solution without causing yellowing. A sealed container (14) is used to house the peroxide (16) solution and an inert gas, preferably nitrogen (18). The container (14) is made from a translucent or transparent material to permit viewing during the mixing operation and is covered with an opague material (20) during storage of the peroxide solution (16) and gas (18).
Abstract:
Radiation sensitive resins for use as a top layer resist in a bilayer system for use in deep UV photolithography comprises derivatized copolymers having structural units (1), (2), (3) and (4) wherein n is 1 to 5, R is an alkyl group, R 1 a methyl or trimethylsiloxy, R 3 is hydrogen or methyl and R 2 and R 4 are each tert-butyl groups.
Abstract:
The invention concerns a method for polymerising block polymers of general formula (I) which consists in contacting: an ethylenically unsaturated monomer of formula: CYY'(=CW-CW')a=CH2; a precursor compound of general formula (II); a radical polymerisation catalyst.
Abstract:
The invention provides 3D printable resin formulation comprising: A) at least one flame retardant, which is an aliphatic bromine-containing acrylate and/or methacrylate monomer, said monomer being liquid at room temperature; B) non-halogenated UV light curable component; and C) one or more photoinitiator(s). Methods for preparing 3D objects and flame retarded 3D objects are also disclosed.
Abstract:
A metadielectric composite oligomeric organic material according to the formulae: ( D )p`-[ C ]-( A )q` or ( D )p`-[C]-( D )q` wherein C is a linear chain oligomeric polarizable core, wherein the linear chain oligomeric polarizable core possesses at least two different monomers with differing electron affinity, and the different monomers are positioned such that an electron affinity gradient is present, and there is either at least one electron-donor group or electron-rich monomer, D, and at least one electron-acceptor group or electron-poor monomer, A, or electron-donor group or electron-rich monomer, D, attached at each end of the oligomeric polarizable core, p' and q' represent the number of electron-donor and electron-acceptor groups present, respectively, and are any integer greater than zero, and at least one resistive insulating group is covalently attached to the molecular structure at any location.