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    • 2. 发明授权
    • Mandrel for production of rubber hose
    • 用于生产橡胶软管的心轴
    • US4938910A
    • 1990-07-03
    • US195358
    • 1988-05-16
    • Shunji AbeHiromi Shigemoto
    • Shunji AbeHiromi Shigemoto
    • B29C33/40B29C33/50B29C33/62B29C33/76B29K21/00B29K105/24C08L15/00C08L23/14C08L23/16C08L23/18C08L23/20C08L23/22
    • C08L15/00B29C33/40C08L23/16C08L23/20B29C33/62B29C33/76B29K2823/06C08L23/14C08L23/22
    • A mandrel suitable for use in the production of a rubber hose formed from a composition comprising:(i) at least one member selected from the group consisting of(A) an ethylene-alpha-olefin random copolymer having an ethylene content of 10 to 95 mol % and a degree of crystallinity, based on X-ray determination, of 0 to 20%,(B) a propylene - C.sub.4 to C.sub.10 alpha-olefin random copolymer having a propylene content of 50 to 80 mol % and a crystal fusion heat amount, determined by a differential scanning calorimeter, of 0 to 80 Joule/g, and(C) an oligomer having the general formula: ##STR1## wherein n and p are independently zero or an integer, m is zero or 1, and R is ##STR2## and (ii) 98% to 30% by weight of a 4-methyl-1-pentene polymer, wherein the weight ratio of the component (i) to the component (ii) is from 2:98 to 70:30.This mandrel has excellent dimensional stability, durability, heat resistance, and releasability.
    • 一种适于用于生产由组合物形成的橡胶软管的心轴,包括:(i)至少一种选自(A)乙烯含量为10至95的乙烯-α-烯烃无规共聚物 摩尔%和结晶度,基于X射线测定,为0〜20%,(B)丙烯含量为50〜80摩尔%的丙烯-C4〜C10α-烯烃无规共聚物和结晶熔融热 通过差示扫描量热计测定的量为0至80焦耳/克,(C)具有以下通式的低聚物:其中n和p独立地为0或整数,m为零或1 和(ii)98重量%至30重量%的4-甲基-1-戊烯聚合物,其中组分(i)与组分(ⅱ)的重量比为2:98 到70:30。 该心轴具有优异的尺寸稳定性,耐久性,耐热性和脱模性。
    • 7. 发明授权
    • Multilayered article, vessel and resin composition based on polyethylene
    • 基于聚乙烯的多层制品,容器和树脂组合物
    • US06777491B1
    • 2004-08-17
    • US09637067
    • 2000-08-11
    • Hideshi KawachiHiromi ShigemotoYuichiro Terashi
    • Hideshi KawachiHiromi ShigemotoYuichiro Terashi
    • C08L2300
    • B32B27/32C08L23/0815C08L23/0861C08L51/06
    • A multilayered article and vessel, which are superior in the properties, such as shock resistance, rigidity, an ability to barrier against gasoline and interlayer adhesion, and are permissible of being recycled for reuse, comprising a base layer (A1) comprising a polyetylene resin (a1) having an MFR (ASTM D 1238, 190° C., 2160 g) of 0.001 to 0.5 g/10 min. and a density of 0.945 to 0.980 g/cm3, an adhesive layer (A2) comprising a modified etylene/&agr;-olefin copolymer (a2) which is modified by having grafted thereon an unsaturated carboxylic acid or its derivative and has a density of 0.900 to 0.940 and a barriering layer (B) comprising an ethylene/vinyl alcohol copolymer (b), wherein the Izod impact strength (with notch) (ASTM D 256, −40° C.) for a sheet specimen which is prepared by mechanically crushing the laminate into powder, granulating the resulting powder on a monoaxial extruder to form a resin composition and pressing the granular composition on a press molding machine into a sheet of 3 mm thickness at a temperature of 230° C. under a pressure of 50 kgf/cm2 with cooling under the condition defined by ASTM D 1928, is at least 100 J/m.
    • 具有优异性能的多层制品和容器,例如耐冲击性,刚性,阻挡汽油的能力和层间粘合性,并且是允许再循环使用的,包括:包含聚乙烯树脂的基层(A1) a1)具有0.001至0.5g / 10min的MFR(ASTM D 1238,190℃,2160g)。 和密度为0.945至0.980g / cm 3的粘合剂层(A2),包含改性的亚乙烯/α-烯烃共聚物(a2)的粘合剂层(A2),其通过在其上接枝不饱和羧酸或其衍生物并具有密度 为0.900〜0.940,以及包含乙烯/乙烯醇共聚物(b)的阻挡层(B),其中用于片材试样的悬臂梁式冲击强度(具有切口)(ASTM D 256,-40℃) 将层压体机械破碎成粉末,将所得粉末在单轴挤出机上造粒,形成树脂组合物,并将压制成型机上的粒状组合物在压力为50℃的压力下在230℃的温度下压制成3mm厚的片材 kgf / cm 2,在ASTM D1928规定的条件下冷却至少为100J / m。