摘要:
Transition metal complexes having bulky ligand systems and the formula (I) where R2, R4 are C4-C16-heteroaryl or C6-C16-aryl bearing C4-C16-heteroaryl or C6-C16-aryl substituents in the two vicinal positions relative to the point of linkage to Na or Nb and M is a metal of group VIIIB of the Periodic Table of the Elements, are described.
摘要:
The present invention relates to a method of coating a technical textile belt or fabric for a machine to produce a fibrous web of material, for example paper, cardboard, or tissue, which includes the step of i) providing a belt, whereby a coating is applied onto one side of belt; ii) providing of an applicator device, with which a liquid medium can be applied onto one side of belt without actually coming in contact with the belt; iii) applying the liquid medium onto one side of the belt; and iv) causing the liquid medium to bond and develop in order to allow the formation of a solid coating covering on the side of the belt and/or the inner structure covering at least a portion of the side of the belt. The method according to the present further provides that in invention step iii), the applicator device, follows a previously established raster in applying pre-determined quantities of the coating medium onto a plurality of locations, located within at least one region on the side of the belt. The coating medium and the material and/or the structure of the belt are further selected in such a way that the coating medium will spread out on the surface of the side of the belt and/or from the surface of the side into the interior of the structure of the belt.
摘要:
A press fabric for a machine for the production of web material, especially paper or cardboard, including a carrying structure and a plurality of layers on one web material contact side of the carrying structure, whereby polymeric material is contained in at least one of the layers of fibrous material.
摘要:
A press fabric for a machine for the production of web material, especially paper or cardboard, includes a carrying structure and at least one layer of fibrous material on one web material contact side of the carrying structure, whereby at least some of the fibers of the at least one layer of fibrous material are coated at least partially with a film of a first polymeric material and whereby a permeable composite structure is formed by a second polymeric material in the at least one fibrous layer, in that the hollow spaces which are formed between fibers of the at least one fibrous layer are filled partially with the second polymeric material.
摘要:
Composite materials having high cohesive strength, formed from at least one polymer and from at least one compound selected from among mineral oxides, aluminosilicates and active carbon, are characterized by a mean particle size of at least 100 mm, a pore volume (Vd1) formed by pores having a diameter ranging from 3.6 to 1,000 nm, equal to at least 0.2 cm3/g, a cohesive strength such that its content of particles having a size of less than 100 mm, obtained after being subjected to an air pressure of 2 bar, of less than 1.5%, preferably 0.0%, by volume; such composite materials are formed into useful liquid supports, catalyst supports, additives, or liquid or gas filters, in particular into cigarette filters.
摘要:
A press fabric for a machine for the production of web material, especially paper or cardboard, includes a carrying structure and at least one layer of fibrous material on one web material contact side of the carrying structure, whereby at least some of the fibers of the at least one layer of fibrous material are coated at least partially with a film of a first polymeric material and whereby a permeable composite structure is formed by a second polymeric material in the at least one fibrous layer, in that the hollow spaces which are formed between fibers of the at least one fibrous layer are filled partially with the second polymeric material.
摘要:
The invention relates to a press fabric, especially a press felt, for a machine for the production of a fibrous web, especially paper or cardboard, which is fluid permeable and which includes an elastomer polymeric material. The invention is characterized in that the total weight component of the elastomer polymeric material contained in the press fabric is more than 50%, preferably more than 60% of the total weight of the press fabric.
摘要:
Composite materials having high cohesive strength, formed from at least one polymer and from at least one compound selected from among mineral oxides, aluminosilicates and active carbon, are characterized by a mean particle size of at least 100 mm, a pore volume (Vd1) formed by pores having a diameter ranging from 3.6 to 1,000 nm, equal to at least 0.2 cm3/g, a cohesive strength such that its content of particles having a size of less than 100 mm, obtained after being subjected to an air pressure of 2 bar, of less than 1.5%, preferably 0.0%, by volume; such composite materials are formed into useful liquid supports, catalyst supports, additives, or liquid or gas filters, in particular into cigarette filters.
摘要:
The invention relates to a press fabric, especially a press felt, for a machine for the production of a fibrous web, especially paper or cardboard, which is fluid permeable and which includes an elastomer polymeric material. The invention is characterized in that the total weight component of the elastomer polymeric material contained in the press fabric is more than 50%, preferably more than 60% of the total weight of the press fabric.
摘要:
A press fabric for a machine for the production of web material, especially paper or cardboard, including a carrying structure and a plurality of layers on one web material contact side of the carrying structure, whereby polymeric material is contained in at least one of the layers of fibrous material.