Abstract:
A post-crosslinked adsorbent comprises: monomer units of (a) at least 55 wt % at least one polyvinylaromatic monomer and (b) up to 45 wt % at least one monovinylaromatic monomer; and 0.5-2.5 mmol/g pendent vinyl groups; wherein the dry adsorbent has BET specific surface area in the range of about 650-1000 m2/g, BET average pore diameter 7.2-10 nm, BET porosity 1.29-2.45 mL/g, BJH adsorption micropore volume was less than 20% of total BJH adsorption pore volume, and HK micropore volume was less than 21% of total BJH adsorption pore volume. The invention is also directed to a preparation method for the polymeric adsorbent.
Abstract:
A closed cell foam material contains a propylene based polymer comprising from about 5% to about 32% by weight α-olefin units. The propylene based polymer has a heat of fusion, as determined by DSC, of less than 80 J/g. The material also contains 0.5 to 5 phr peroxide, 1.0 to 5.0 phr blowing agent, and 0.1 to 10 phr co-agent. The cells of closed cell foam material have a diameter in the range of 0.1 to 1.5 mm.
Abstract:
Solid expandable compositions useful for the manufacture of cavity filler inserts and the like are obtained by combining at least one anhydride-functionalized thermoplastic, at least one amine-functionalized latent curing agent, and at least one latent blowing agent. Such compositions may be formulated so as to provide a highly expanded foam upon heating to activate the blowing agent wherein the foam is resistant to sagging and tolerant of over baking conditions.
Abstract:
A foaming composition includes a fluoropolymer, a nucleating agent and a pigment, wherein said pigment is a manganese-antimony-titanium (Mn—Sb—Ti) oxide pigment.
Abstract:
A high-performance foamed structure which is formed of a foamed structure having closed cells and which exhibits excellent interface adherence to an element to be sealed (i.e., a structural element to which waterproofing is to be applied) even when used for a long time in use as a waterproof sealing material, and a high-performance waterproof/watertight sealing material made of the same are provided. The closed-cell foamed rubber sheet of the present invention is characterized in that it is obtained by subjecting a foamable raw material composition composed mainly of a rubber-based resin to crosslinking treatment and foaming treatment and that it has an apparent density of from 30 to 100 kg/m3 as measured in accordance with JIS K7222 and a compression set of 60% or less as measured under the conditions of 70° C. for 24 hours in accordance with JIS K6262.
Abstract translation:一种高性能发泡结构,其由具有闭孔的泡沫结构形成,并且即使长时间使用也表现出与要密封的元件(即,要施加防水的结构元件)的优异的界面附着性 用作防水密封材料,并且提供由其制成的高性能防水/防水密封材料。 本发明的闭孔发泡橡胶片的特征在于,通过对主要由橡胶类树脂构成的发泡性原料组合物进行交联处理和发泡处理而得到,其表观密度为30〜 根据JIS K7222测定的100kg / m 3,根据JIS K6262在70℃条件下测定24小时的压缩永久变形量为60%以下的压缩永久变形。
Abstract:
The present invention relates to a foamed polypropylene composition comprising a propylene homo- and/or copolymer and glass fibres, wherein (i) the composition has a density of 50 to 950 kg/m3, (ii) the tensile modulus tm(extrusion direction) measured according to ISO 527 in extrusion direction and the k-value measured according to ASTM C-518 satisfy the relation: tm(extrusion direction) [MPa]/k [W/mK]≧9000 MPa·mK/W, to the use of said composition for the production of an insulating layer and to an article comprising said composition.
Abstract translation:本发明涉及包含丙烯均聚物和/或共聚物和玻璃纤维的发泡聚丙烯组合物,其中(i)组合物的密度为50至950kg / m 3,(ii) 根据ISO 527在挤出方向上测得的拉伸模量tm(挤出方向) SUB>和根据ASTM C-518测量的k值满足关系:tm(挤出方向) SUB > [MPa] / k [W / mK]> = 9000MPa.mK / W,涉及用于制备绝缘层的所述组合物和包含所述组合物的制品。
Abstract:
Foamed film compositions using chemical blowing agents and produced by continuous blown film extrusion or cast film extrusion of polymer foams. The composition has small cell size and is suitable for the production of thin film articles. The articles may be monolayer or multilayered structures.
Abstract:
The present invention provides an ethylene-propylene-diene rubber foamed material obtained by foaming a rubber composition containing an ethylene-propylene-diene rubber, a quinoid cross-linking agent, and an organic peroxide cross-linking agent.
Abstract:
A foamed rubber roller including a foamed elastic layer formed as an outer layer thereof. The foamed elastic layer is composed of a thermosetting elastomer composition containing 100 parts by mass of a rubber component and 5 to 60 parts by mass of zinc methacrylate or 5 to 60 parts by mass of a mixture of methacrylic acid and zinc oxide as a filler. The thermosetting elastomer composition is foamed with a chemical foaming agent or a combination of a chemical foaming agent and a chemical foaming assistant agent.
Abstract:
The foam sheet of the present invention is biodegradable, can be recycled, has good processability, is lightweight, exhibits excellent appearance, has practically satisfactory heat resistance and is more acceptable to the environment. There is provided a crosslinked biodegradable resin continuous foam sheet comprising biodegradable resin, and has an expansion rate of about 1.5 to about 50 and a gel fraction of about 3% or more. There is further provided a method for producing the foam sheet comprising the steps of: (1) preparing a sheet from a resin composition comprising a biodegradable resin, a thermal decomposable blowing agent, and a crosslinking promoter; (2) irradiating the resulting sheet with an ionizing radiation to crosslink the resin composition; and (3) subjecting the crosslinked sheet to heat treatment to continuously prepare a crosslinked foam sheet. Thus, the foam sheet of the present invention can be used in a wide range of practical applications such as, for example, interior materials for an automobile, thermal insulators such as a pipe covering, cushioning materials such as a tape core and the like.