摘要:
Disclosed are a styrene-based resin composite material in which a layer composed mainly of a curable phosphazene compound is formed on the surface of a molding material of a styrene-based polymer having a mainly syndiotactic configuration or a composition thereof, and also an ink ribbon in which an ink layer is provided on one side of a film of the above polymer of a composition thereof and a heat resistant lubricating layer composed mainly of the curable phosphazene compound provided on the side opposite thereto, and also a magnetic recording medium characterized in that a magnetic layer containing the curable phosphazene compound as a binder on a support composed of the above polymer or a composition thereof, a over coated layer of a magnetic recording medium which contains the curable phosphazene compound and a lubricating layer of a magnetic recording medium which contains the curable phosphazene compound.
摘要:
Disclosed are a styrene-based resin composite material in which a layer composed mainly of a curable phosphazene compound is formed on the surface of a molding material of a styrene-based polymer having a mainly syndiotactic configuration or a composition thereof, and also a magnetic recording medium characterized in that a magnetic layer containing the curable phosphazene compound as a binder on a support composed of the above polymer or a composition thereof, an over coated layer of a magnetic recording medium which contains the curable phosphazene compound and a lubricating layer of a magnetic recording medium which contains the curable phosphazene compound.
摘要:
The invention relates to a styrene resin material, especially a styrene-based resin composition having good high-speed castability and good spreadability and favorable to extrusion molding lines. Of the styrene-based resin material, the product of the melt index (MI, g/10 min) and the melt tension (MT, g) measured under a specific condition is at least 20. Concretely, for example, it is a styrene-based resin composition comprising (A) from 35 to 95% by weight of a styrenic polymer having a syndiotactic structure, (B) from 5 to 50% by weight of a specific polyethylenic resin, and (C) from 0 to 15% by weight (including 0) of a specific styrene-olefin copolymer.
摘要:
There is disclosed a laminate comprising (a) a layer of a styrenic polymer having a higher degree of syndiotactic configuration and a crystallinity of at least 25%, preferably 35%, (b) a layer of paper and optionally (c) an adhesive layer and (d) a barrier layer. The above laminate is excellent in heat resistance, hydrolytic resistance, tearability, dead foldability and gloss and can find a wide range of effective application.
摘要:
There are disclosed a laminate comprising (a) a biaxially oriented film of a styrenic polymer having a high degree of syndiotactic configuration of 10 to 100 .mu.m in thickness and (b) a rubber-based self-adhesive layer of 5 to m in thickness and a self-adhesive tape comprising the above-mentioned laminate. The above laminate and self-adhesive tape are excellent in transparency, heat resistance, water resistance, moisture resistance, dispenser and hand cuttability, insulating properties and mechanical properties such as elasticity and nerve and can find a wide range of effective application.
摘要:
A photographic film which comprises (A) a stretched film of a styrene polymer having a syndiotactic configuration or a composition containing it, wherein thickness is 20 to 500 .mu.m, haze is not more than 3% and moisture expansion coefficient is not more than 1.times.10.sup.-6 /% RH, and (B) a photosensitive layer, which is light and excellent in mechanical properties, is disclosed.
摘要:
Novel styrene-based resin compositions comprising a styrene-based resin having a mainly syndiotactic configuration in compbination with one or more of: (A) thermoplastic resins other than the styrene-based resin, (B) a rubber polyers, and (C) inorganic fillers. The compositions have improved heat resistance and impact resistance over non-syndiotactic styrene-based resin compositions.
摘要:
The present invention relates to a styrenic resin composition which comprises 90 to 99.99% by weight of a styrenic polymer having a high degree of syndiotctic configuration (SPS) and 0.01 to 10% by weight of a spherical aluminosilicate having pH in the range of 5 to 11; a polystyrene oriented film which comprises the above styrenic resin composition molded into an oriented film; a styrenic resin composition which comprises 99.2 to 99.95% by weight of a styrenic polymer having a high degree of syndiotactic configuration and 0.05 to 0.8% by weight of a spherical regular elastomer having an average grain size in the range of 0.1 to 3 .mu.m, and which has a melt index at 300.degree. C. under 2.16 kg load being in the range of 1 to 50; and a polystyrene oriented film which comprises the above styrenic resin composition molded into an oriented film. According to the present invention, there are provided styrenic resin compositions each being excellent in melt-heat-stability, minimized in the generation of white powders at the time of continuous film forming and capable of producing oriented films that are favorable in slipperiness, dielectric breakdown voltage (AC), tear strength and the like; and polystyrene oriented films useful as a variety of base materials for films.
摘要:
A magnetic recording medium having a magnetic layer on at least one side of a base film which is a stretched film of styrene polymer having a high degree of syndiotactic configuration or a composition thereof or a laminate film containing the stretched film, wherein linear expansion coefficient is not more than 5.times.10.sup.-5 /.degree. C. and static friction coefficient is not less than 0.3 and not more than 1.0 is disclosed.The magnetic recording medium has good sliding properties, smoothness, heat resistance and moisture resistance, is excellent in dimensional stability to temperature and moisture, and has good coersive force, thus can be highly densified.
摘要:
A styrene-based polymer molding is obtained by molding a styrene-based polymer having mainly syndiotactic configuration and then irradiating the molding thus obtained with electron rays. This molding is excellent in heat resistance and further inexpensive. Thus the molding is useful as a material required to have high heat resistance, such as a structural material, a food container material, a food wrapping material or an electric or electronic part material, particularly as an electric or electronic part material, because it is excellent in soldering resistance.