摘要:
Urethane molded products for polishing pad comprise two types of cells having different sizes in urethane molded products formed by mixing and curing an isocyanate-terminated urethane prepolymer and an active hydrogen-containing compound. The molded products may be made by a procedure comprising mixing expanded microballoons or non-expanded, thermally expandable microspheres and water with the isocyanate-terminated urethane prepolymer and active hydrogen-containing compound and curing the mixture.
摘要:
A liquid silicone rubber composition that is easy to work with in mixing and that upon curing becomes a foamed silicone rubber with a low specific gravity and low thermal conductivity, a method for manufacturing this composition, and a method for manufacturing a foamed silicone rubber. The liquid silicone rubber composition comprises a liquid silicone rubber base compound produced by mixing (A) a liquid diorganopolysiloxane and an optional inorganic filler with (B) a thermoplastic resin hollow-particle powder that expands when heated and performing a heat treatment at a temperature sufficient to cause expansion of component B and adding to the base compound (C) a curing agent in an amount sufficient to cure the liquid diorganopolysiloxane.
摘要:
A plastic material to produce a conductive plastic object, especially to form a shielding profile (3) in situ on part (1) of a shielding housing, comprising a liquid or paste-like, cross-linkable or highly viscous plastic resin matrix (5) and gas-filled, compression-elastic, especially compressible micro hollow bodies (7) dispersed in said plastic resin matrix.
摘要:
PCT No. PCT/AU94/00521 Sec. 371 Date Aug. 19, 1996 Sec. 102(e) Date Aug. 19, 1996 PCT Filed Sep. 2, 1994 PCT Pub. No. WO95/07949 PCT Pub. Date Mar. 23, 1995A controlled permeability film and process for producing same wherein the film includes: a film forming polyolefin polymer; and an inert porous filler in an amount effective to reduce the ratio of the carbon dioxide permeability and water permeability to the oxygen permeability of the film, wherein the filler has a particle size greater than the intrinsic film thickness of the film forming polymer; the controlled permeability film being further modified to reduce the CO2/O2 permeability ratio to approximately 0.5 to 2.0.
摘要:
A controlled permeability film including a film forming polymer and optionally including a dispersing polymer; and an inert porous filler optionally having a surface modifying agent coated thereon, the inert porous filler being present in an amount effective to reduce the ratio of the carbon dioxide permeability to the oxigen permeability of the film, and wherein the filler has a particle size greater than the intrinsic film thickness of the film forming polymer. A composite packaging article and a packaged produce product are also disclosed.
摘要:
A foamable silicone rubber composition is disclosed that evolves neither toxic gas nor hydrogen, that does not suffer from inhibition of its cure to give silicone rubber, and that cures with time to yield a silicone rubber foam containing uniform, microscopic cells. Said silicone rubber composition comprises: (A) 100 weight parts thermosetting liquid silicone rubber composition, and (B) 0.1 to 30 weight parts thermally expansible hollow plastic microparticles.