150results about How to "Large scale preparation" patented technology

The invention relates to a process for the manufacture of ethylene polymers and copolymers in which ethylene is compressed in a primary compressor at a throughput of at least 55 tonnes / hour, mixed with recycled ethylene and further compressed in a two-stage reciprocating secondary compressor having at least 14 cylinders to a pressure of at least 2300 bar at a throughput of at least 120 tonnes / hour, heating at least a portion of that ethylene to a temperature of at least 95° C. and introducing it into a tubular reactor of diameter at least 65 mm and a length of at least 1500 m, introducing initiator in at least three reaction zones to give a conversion of at least 28% and maintaining a pressure drop over the reactor to maintain a flow velocity of at least 6 m / s.

The invention relates to the field of preparation and application of two-dimensional materials, in particular to a method for effectively preparing a high-orientation and high-compactness two-dimensional material thin film. The method comprises the following steps: taking a circular tube with a smooth inner surface as a casting die; pouring a solution which contains a two-dimensional material intothe die when the die rotates in the peripheral direction at high speed; uniformly coating the inner surface of the die with the solution by using centrifugal force; forming shear force which drives the two-dimensional material to be regularly arranged layer by layer in an oriented manner in the peripheral direction in the solution in a centrifugal rotating process; and meanwhile, driving the two-dimensional material to be accumulated at high compactness by the centrifugal force so as to obtain the two-dimensional material thin film with high orientation and high compactness. The method is suitable for preparing various two-dimensional materials such as graphene, and composite thin films and laminated heterostructure thin films of the two-dimensional materials; electric property, heat property, mechanical property and the like of the thin film are greatly improved; and the method is used in the field of high-performance electric conduction / heat-conduction thin films, heat management materials, high-strength thin films, electronic / optoelectronic devices, compact energy storage, gas / ion separating films, proton transmitting films and the like.

Provided is a method for manufacturing a porous body characterized in that after dispersing a gas generating compound in a molten-state material for forming the porous body, the molten material is solidified. The high quality and highly uniform porous body can be manufactured even at an atmospheric pressure, without requiring high pressure ambience.

The invention relates to a novel labeling reactant of formula (I) suitable for labeling an oligonucleotide wherein:R is a temporary protecting group. A is either a phosphorylating moiety or a solid support tethered to a bridge point Z via a linker arm E. E′ is a linker arm between G and Z. G is a bivalent aromatic structure, tethered to two iminodiacetic acid ester groups N(COOR′″)2 or G is a structure selected from a group consisting of G is a protected functional group. The invention further concerns a method for direct attachment of a conjugate group to an oligonucleotide structure enabling the attachment of a desired number of these groups during chain assembly. The method comprises a Mitsonobu alkylation.

The present invention is directed to a hemostatic or tissue sealing material having (a) a peptide having a sequence SEQ ID NO: 1 or an amino acid analog sequence thereof, and (b) a scaffold for said peptide or amino acid analog sequence. The scaffold is preferably hemostatic, such as a natural or genetically engineered absorbable polymer, a synthetic absorbable polymer, or combinations thereof. The natural or genetically engineered absorbable polymers can be selected from the group consisting of a protein, a polysaccharide, or combinations thereof.