摘要:
A polymer composition comprising a thermoplastic norbornene polymer which preferably has a number average molecular weight of 10,00-200,000 as determined by gel permeation chromatography in toluene solvent and calculated as styrene and a content of norbornene polymer components having a number average molecular weight of 2,000 or less of 1% by weight or less, and a compounding ingredient, such as a rubber-like polymer, wherein the compounding ingredient is preferably dispersed in the form of microdomains in the norbornene polymer; and medical implements and optical naturals formed essentially of the composition.
摘要:
A polymer composition including a thermoplastic norbornene polymer which preferably has a number average molecular weight of 10,00-200,000 as determined by gel permeation chromatography in toluene solvent and calculated as styrene and a content of norbornene polymer components having a number average molecular weight of 2,000 or less of 1% by weight or less, and a compounding ingredient, such as a rubber-like polymer, wherein the compounding ingredient is preferably dispersed in the form of microdomains in the norbornene polymer; and medical implements and optical naturals formed essentially of the composition.
摘要:
A molded article having an adhesion of at least 50 squares per 100 squares in crosscut adhesion test and at least 40 squares per 100 squares even after kept in a warm water of 70.degree. C. for 1 hour, a haze value of 1.0% or less in Taber abrasion test and a pencil hardness of 2H or higher, said molded article being obtained by modifying the surface of a substrate formed of a thermoplastic norbornene resin to have a surface tension of 50 dynes/cm or greater by a treatment such as corona discharge treatment or the like or forming a preliminary primer layer of a modified product obtained by introducing a polar group into a copolymer of a vinyl aromatic compound and a conjugated diene, or the like; forming a primer layer for silicone hard coating agent on the modified surface or the preliminary primer layer, and then forming thereon a silicone hard coat layer, and a method for producing the molded article.
摘要:
(1) A solvent-soluble ring-opened polymer constituted of 100-50% by weight of a norbornene derivative of monomer (A) represented by the formula ##STR1## wherein, R.sub.1 and R.sub.2 are the same or different and each denote hydrogen or alkyl and m denotes an interger of 0 to 2, and 0-50% by weight of another norbornene derivative of monomer (B) capable of undergoing ring-opening copolymerization with the preceding monomer (A), the polymer having a number average molecular weight of 10,000 to 50,000, a weight average molecular weight-to-number average molecular weight ratio (Mw/Mn) of up to 3, and a glass transition temperature of at least 80.degree. C., and(2) a process for producing such ring-opened polymers as stated above.
摘要:
The present invention provides the hydrogenated product of a thermoplastic norbornene polymer excellent in characteristics as optical materials by reducing the residual amounts of the transition metal atoms originating from the polymerization catalyst used at the polymerization to 1 ppm or less of the hydrogenated product.Reduction of the residual amounts to below the desired level is attained by treating the reaction solution with the adsorbent during or after production of the hydrogenated product from the thermoplastic norbornene polymer.The hydrogenated product of the thermoplastic norbornene polymer thus obtained in which the residual amounts of the transition metal atoms are 1 ppm or less, has a wide utilization field, including a material for optical articles having excellent utilization characteristics such as substrates for optical elements, lenses and the like.
摘要:
A thermoplastic norbornene based molded article which can be used as a substrate for liquid crystal display having an excellent performance; said substrate having a specified surface roughness of 0.05 .mu.m or less, and a liquid crystal display produced therefrom.
摘要:
A process for the production of a molded or formed article provided with a hard coat layer, which comprises coating a surface of a thermoplastic saturated norbornene polymer molded or formed article with a UV curable hard coating layer containing a solvent of an aromatic hydrocarbon series and/or solvent of an alicyclic hydrocarbon series, drying the resultant coating, and irradiating the dried coating with UV ray, and a molded or formed article provided with a hard coat layer having high hardness and excellent bond strength.
摘要:
The present invention provides a thermoplastic composition excellent in heat resistance and water resistance which comprises a thermoplastic saturated norbornene polymer which has a number-average molecular weight (Mn) of 50,000-500,000 and a weight-average molecular weight (Mw) of 100,000-2,000,000 which are measured by high performance liquid chromatography, and a molecular weight distribution (Mw/Mn) of 2.2 or more, and a volatile content of at most 0.3% by weight. The composition is suitable for optical materials, electroconductive composite materials and optical recording media.
摘要:
A phase plate comprises, as a birefringent layer, a film obtained by stretching and orienting a sheet of a thermoplastic saturated norbornene resin, which has been formed by melt forming. The phase plate of the invention is such that the birefringent layer is optically even at the whole surface, and such optical evenness remains constant even by changes of temperature, humidity and/or the like. The phase plate of the invention can be used in parts for polarization microscopes, parts for liquid crystal displays, etc., and is particularly suitable for use in a phase plate for liquid crystal displays.
摘要:
The present invention provides a thermoplastic composition excellent in heat resistance and water resistance which includes a thermoplastic saturated norbornene polymer which has a number-average molecular weight (Mn) of 50,000-500,000 and a weight-average molecular weight (Mw) of 100,000-2,000,000 which are measured by high performance liquid chromatography, and a molecular weight distribution (Mw/Mn) of 2.2 or more, and a volatile content of at most 0.3% by weight higher. The composition is suitable for optical materials, electroconductive composite materials and optical recording media.