摘要:
A homogeneous polymer blend is disclosed containing components A and B. Accordingly A is about 1 to 30% by weight of a rigid, rod-shaped polymer having a persistence length of at least 10 nm and a ratio of molecular length to molecular diameter of at least 30, and B) is about 70 to 99% by weight of a flexible polymer which contains at least one member selected from the group consisting of non-ionic polar groups, ionic groups and groups convertible into ions. The flexible polymer is any one of polyolefins, polyacrylates, polyamides and polyurethanes. Component A) contains at least one chemically fixed member selected from the group consisting of non-ionic polar group, ionic group and a group convertible into ionic group, in an amount sufficient to render said A) and B) compatible one with the other.
摘要:
A rubber composition for an inner liner of a vehicular tire, high in stickiness before vulcanization and in adhesive strength after vulcanization and having good low temperature characteristics so as to effectively suppress crack formation in the inner liner. The rubber composition comprises a rubber component including halogenated butyl rubber ranging from 60 to 100 parts by weight, and diene rubber not more than 40 parts by weight. Tert-butylphenolacetylene resin is blended in a range from 0.5 to 10 parts by weight with 100 parts by weight of the rubber component.
摘要:
Process for molding an acetylene high polymer by press-forming a gel-like composition composed of 5 to 95% by weight of an acetylene high polymer having a fibril structure and 95 to 5% by weight of an organic solvent.
摘要:
A foundry composition adaptable to forming cores and molds comprising a foundry aggregate, a binder therefor, a catalyst and an amine, the binder being a substituted phenol.
摘要:
Certain polyacetylenes exhibit reversible color changes at transition temperatures in the range -180.degree. to 220.degree. C., wherein the thermochromic cycles can be repeated many times with no apparent degradation and little change in spectroscopic properties.These thermochromic polyacetylenes are useful in temperature-indicator and indicia-display device applications.A process for laser-beam recording of images is described employing a thermochromic polyacetylene, in which the hysteresis properties of the polyacetylene can be suitably altered allowing for selectively storing or erasing the formed image.
摘要:
A composition comprising an ethylene/C5-C10 alpha-olefin/non-conjugated polyene interpolymer, wherein the interpolymer meets the following relationship: Tg (° C.)≤[0.625(° C./wt %)XC−55° C.], where Tg is the glass transition temperature of the interpolymer, and XC is the wt % crystallinity of the interpolymer.
摘要:
The present invention relates to a hydrochromic polydiacetylene composite composition, a hydrochromic thin film using same, and a use thereof, and more specifically, to a hydrochromic polydiacetylene composite composition reacting sensitively to moisture, providing the hydrochromic thin film using same, and to applying same to biorecognition or fingerprint recognition. According to the present invention, moisture secreted from a fingerprint or pores on the skin can be detected with high sensitivity. Thus, the position of pores unique to a fingerprint of an organism can be amplified and displayed through selective color change and fluorescent change patterns exhibited when moisture is absorbed.
摘要:
A method of manufacturing a filled polymeric membrane includes a first step of preparing a filler suspension having a solvent for a glassy polymer and nanometre-sized particles. The nanometre-sized particles in the filler suspension are aggregated in aggregates having an average aggregate size in the range between 50 nm and smaller than 200 nm. In a following step, the glassy polymer is added to the filler suspension to obtain a polymer suspension. Next, the glassy polymer is dissolved in the polymer suspension. In a next step, the polymer suspension is cast on a substrate, followed by a step of removing the solvent. A filled polymeric membrane includes aggregates of nanometre-sized filler particles. The membrane is used in pervaporation and nanofiltration.
摘要:
Duration monitoring co-topo-polymeric compositions and methods for making and using the same are provided. Indicator compositions of the invention include an organic polymer and undergo a color change, which may be reversible or irreversible, in a time dependent manner following an initiation event. Also provided are indicator devices that include the indicator compositions of the invention. The compositions of the invention find use in a variety of different applications.