摘要:
A monomer suitable for use in forming low dielectric constant films in semiconductor devices comprising i) two dienophile groups (A-functional groups) attached to a single aromatic ring and ii) a second ring structure comprising two conjugated carbon-to-carbon double bonds and a leaving group L (B-functional group), characterized in that said single aromatic ring is directly covalently attached to one of the double bonded carbons of the B functional group or to a fused aromatic ring containing two such double bonded carbons of the B-functional group, and one A-functional group of one monomer is capable of reaction under cycloaddition reaction conditions with the B-functional group of a second monomer to thereby form a polymer.
摘要:
A suitable cross-linkable matrix precursor and a poragen can be treated to form a porous cross-linked matrix having a Tg of greater than 300° C. The porous matrix material has a lower dielectric constant than the corresponding non-porous matrix material, making the porous matrix material particularly attractive for a variety of electronic applications including integrated circuits, multichip modules, and flat panel display devices.
摘要:
This invention is a polyarylene composition in which resin does not undergo a significant drop in modulus at temperatures above 300° C. during cure. This feature enables one to form porous films by avoiding pore collapse and/or using a wider variety of poragen materials.
摘要:
An oligomer, uncured polymer or cured polymer comprising the reaction product of one or more polyfunctional compounds containing two or more cyclopentadienone groups and at least one polyfunctional compound containing two or more aromatic acetylene groups wherein at least some of the polyfunctional compounds contain three or more reactive groups. Such oligomers and uncured polymers may be cured to form cured polymers which are useful as dielectrics in the microelectronics industry, especially for dielectrics in integrated circuits.
摘要:
This invention concerns a polymer coating composition for use as non-focal optical power limiting dye containing polymeric materials. This composition contains: (1) one or more Modified Polymers comprising a Polymer, such as a hyperbranched polymer family, especially HB-PCS, HB-PU, HB-PUSOX or PC with one or more of: a) reverse saturable dye (RSA), b) multi-photon absorption dye (MPA), c) an azo dye, or d) absorption dye, which dye is chemically bonded to the pendant groups of the Polymer (along its chain and/or termini) or which forms a part of the backbone of the Polymer; (2) carbon nanotubes (CNT) as optical power limiters (OPL); and (3) a self-focusing component.
摘要:
Extruded polymer foams are prepared using 5,5-bis(bromomethyl)-2-oxo-1,3,2-dioxaphosphorinane or brominated 2-oxo-1,3,2-dioxaphosphorinane compounds. The brominated FR additives unexpectedly are stable at the extrusion temperatures, and provide excellent flame retardancy to the foams.
摘要:
A crosslinked polyarylene material with a reduced coefficient of thermal expansion at high temperatures compared with conventional crosslinked polyarylene materials is provided. In addition, an integrated circuit article containing a crosslinked polyarylene polymer with reduced coefficient of thermal expansion at high temperatures is provided.
摘要:
This invention relates to a solvent process for the conversion of aromatic propargyl ethers into chromenes. The process can be catalyzed with copper or zinc salts. The preferred salt is cuprous chloride. The most preferred solvent is a dichlorobenzene. The invention also relates to chromene products formed using the process and to the polymerization of that chromene product and its polymerized product, the latter product having substantially improved flexural modulus and flexural strength properties. The polymerized product is also moisture insensitive.
摘要:
Phenyl cyanates substituted at both ortho positions and further substituted with at least one halo at the meta or para positions are prepared. Then enhance ignition resistance, fire retardance, and toughness of polytriazines when added in varying amounts to polycyanate monomers before cure.
摘要:
The invention is a method comprising (a) providing a substrate having at least one recessed feature characterized by a width of less than about 0.3 microns and an aspect ratio of 5 or higher, (b) coating onto the substrate a composition comprising (i) a curable polymeric material, (ii) a thermally deactivatable gap-filling aid, and (iii) at least one solvent, (c) drying the coated substrate to remove the solvent, leaving a composition of cross-linkable polymeric material and gap-filling aid substantially filling the recessed feature, and (d) heating the coated substrate to cure the polymeric material and to de-activate the gap-filling aid, wherein the cured material has a glass transition temperature of no less than 300° C. and, preferably, a thermal stability temperature of at least 300° C.