摘要:
Described are organic photochromic imbibition compositions that incorporate kinetic enhancing additive(s). Kinetic enhancing additives include epoxy-containing compounds, organic polyols and/or plasticizers that improve the performance of organic photochromic compounds as determined in the Photochromic Performance Test. Also described is a process for incorporating kinetic enhancing additives into polymeric substrates with organic photochromic compounds and the resulting photochromic articles produced by such a process.
摘要:
When a solution of liquid allylic-functional material and bromoxylenol blue is polymerized using a thermally decomposable polymerization initiator, the color imparted by the bromoxylenol blue is brilliant yellow.
摘要:
Pourable, polymerizable compositions comprising aromatic-containing poly(allyl carbonate)-functional material, styrenic material, and monomer having three or more allyl, methallyl, acrylyl and/or methacrylyl groups is free radically polymerized to produce polymerizates having high refractive index, high hardness, and low yellowness. The polymerizates are especially useful in the form of ophthalmic lenses.
摘要:
Described is a process for producing adherent layer(s) on organic polymeric substrates following the steps of (a) treating the surface of the polymeric substrate to provide reactive groups; (b) applying to the surface a polymerizable composition of organic anhydrides, isocyanates and/or a mixture thereof that is substantially free of organosiloxanes; and (c) curing the polymerizable coating. Further steps include applying an additional layer which is substantially free of organosiloxanes and that may or may not contain the polymerizable composition of the present invention. Also described are products produced by the process that may be transparent, tinted, tinted and polarized or photochromic.
摘要:
A glass sheet washing machine comprising a conveyor for moving a glass sheet along a path of travel at a controlled linear speed and a brush rotatable at a controlled rotational speed positioned along said path of travel such that said brush contacts the glass sheet moves along said path of travel wherein the linear speed of the conveyor and the rotational speed of the brush are variable and one of the linear speed and the rotational speed is dependent on any other of the linear speed and the rotational speed.
摘要:
A glass sheet washing machine comprising a conveyor for moving a glass sheet along a path of travel at a controlled linear speed and a brush rotatable at a controlled rotational speed positioned along said path of travel such that said brush contacts the glass sheet moves along said path of travel wherein the linear speed of the conveyor and the rotational speed of the brush are variable and one of the linear speed and the rotational speed is dependent on any other of the linear speed and the rotational speed.
摘要:
Described are photochromic articles that include a substrate and a photochromic amount of at least one organic photochromic material (b) represented by graphic formula XIII adapted to change from an unactivated state to an activated state by exposure to radiation substantially in a wavelength range from 380 to 410 nanometers (nm) when measured over a wavelength range of from 380 to 700 nm. The photochromic articles demonstrate a photochromic response when activated behind an ultraviolet blocking transparency such as an automotive windshield. For example, the photochromic articles retain at least 12 percent of the activation measured as change in optical density or delta OD under outdoor simulating conditions in the Outdoor Test when tested under conditions simulating an eyeglass wearer behind an automotive windshield in the Behind the Windshield Test. Methods for producing the aforedescribed photochromic articles are also described.
摘要:
Described are imbibition compositions that incorporate kinetic enhancing additive(s) into photochromic polymeric host material. Kinetic enhancing additives include organic polyol(s), epoxy-containing compound(s) or a mixture thereof that improves the performance of organic photochromic compounds in the polymeric host as determined in the Photochromic Performance Test. Also described is a process for incorporating kinetic enhancing additives into polymeric substrates prior to, after and/or with organic photochromic compounds and the resulting photochromic articles produced by such a process.
摘要:
Disclosed is a method of preparing a thick casting of polyol (allyl carbonate) by preparing a monolithic, partially cured, first polymerizate of polyol (allyl carbonate), forming a pool of polyol (allyl carbonate) monomer in contact with the monolithic, partially cured, first polymerizate, and thereafter forming a thick, single phase polyol (allyl carbonate) polymer. Also disclosed is the polymer prepared therefrom.
摘要:
Tungsten hexacarbonyl acts as a photochromic agent and an infrared absorber when incorporated in liquid allyl glycol carbonates, such as allyl diglycol carbonate, and polymerizates thereof. Photochromic, infrared-absorbing optical and ophthalmic lenses containing tungsten derived from tungsten hexacarbonyl are made.