摘要:
The present invention relates to a melt-processed molded resin article, comprising: a first resin layer; and a second resin layer formed on the first resin layer, wherein components of the first resin layer are detected from the surface of the second resin layer using an infrared (IR) spectrometer. The melt-processed molded resin article of the present invention is provided with superior mechanical properties and surface characteristics, even without performing an additional coating process, and has the advantages of having a shortened processing time, improved productivity, or reduced production costs.
摘要:
Disclosed are asphalt modifier compositions containing block copolymers prepared by a block copolymerization of vinyl aromatic hydrocarbons and conjugated diene-based compounds, and specific function additives. The asphalt modifier compositions according to the present invention rarely lower the softening point of asphalt and are dissolved into asphalt at high speeds to form uniform asphalt compositions and to improve the productivity of asphalt compositions.
摘要:
The present invention relates to a method for preparing a styrenic olefin. The method of the present invention comprises the steps of: adding a catalyst and a solvent in a reactor and heating the reactor to create a reflux state; adding an alcohol starting material to the reactor dropwise at a constant rate; removing water generated by adding the alcohol starting material from the reactor; and purifying the obtained styrenic olefin. The method of the present invention is advantageous in minimizing byproducts and preparing styrenic olefins having a variety of substituents in high yield.
摘要:
The present invention relates to a catalyst for preparing vinyl aromatic polymer and styrene polymerization using the same, and particularly to a transition metal half metallocene catalyst with a novel structure for preparing syndiotactic styrene polymer having high activity, superior stereoregularity, high melting point and various molecular weight distributions and a process for preparing styrene polymer using the same. The present invention provides a multinuclear half metallocene compound in which two or more of transition metals of groups 3 to 10 on periodic table are connected through bridge ligand simultaneously containing ¥đ-ligand cycloalkandienyl group and ¥ò-ligand functional group and its preparation, and a process for preparing styrene polymer using the compound as a catalyst. Polymers with various molecular weight distributions as well as vinyl aromatic polymer having predominant syndiotactic structure can be prepared with high activity using the multinuclear half metallocene catalyst.
摘要:
The present invention relates to a resin blend for melt-processing, comprising: a first resin; and a second resin which is a polymeric resin with a fluorine radical or a fluorine-substituted organic functional group, and which has a surface energy difference with the first resin of 0.1-35 mN/m at 25?, a method for manufacturing a resin-molded product using the resin blend, and a resin molded product obtained using the method, wherein the resin blend not only enhances the mechanical and surface features of the molded product and achieves better contamination resistance, but also reduces the processing time, increases the productivity, and reduces the production costs by eliminating an additional surface coating step.
摘要:
The present invention relates to a melt-processed moulded resin article comprising: a first resin layer; a second resin layer formed on the first resin layer; and an interface layer which comprises the first resin and the second resin and is formed between the first resin layer and the second resin layer, and this melt-processed moulded resin article can give outstanding mechanical properties and surface characteristics without the implementation of an additional coating process, and can exhibit the advantages of shortened processing time, increased productivity or reduced production costs.
摘要:
The present invention relates to a resin mixture for melt processing, to a pellet, and to a method for producing molded resin articles using same. The resin mixture comprises: a first resin; and a second resin, wherein the difference in the solubility parameter between the first resin and the second resin at a temperature of 25°C is 0.001 to 10.0 (J/cm3)1/2. The resin mixture of the present invention not only improves the mechanical properties and surface characteristics of molded resin articles, but also eliminates the necessity of an additional surface-coating process, thereby shortening processing time, improving productivity, and reducing production costs.
摘要翻译:本发明涉及一种用于熔融加工的树脂混合物,一种颗粒,以及一种使用该树脂的树脂制品的制造方法。 树脂混合物包括:第一树脂; 和第二树脂,其中在25℃的温度下第一树脂和第二树脂之间的溶解度参数的差为0.001至10.0(J / cm 3)1/2。 本发明的树脂混合物不仅提高了树脂制品的机械性能和表面特性,而且消除了额外的表面涂布工艺的必要性,从而缩短了处理时间,提高了生产率并降低了生产成本。
摘要:
The present invention relates to a resin blend for a melting process, to a method for preparing same, and to a resin molding having a specific layer separation structure, the resin blend comprising a first resin and a second resin, wherein the second resin comprises a polymer resin having an organic functional group containing one or more oxygen atoms, and has a melt viscosity difference, with the first resin, of 0.1-3000 pa*s at a shearing velocity of 100-1000 s-1 and at the processing temperature of the resin mixture. The resin blend allows a resin molding to have enhanced mechanical properties and surface hardness, and exhibits the effects of reducing processing time, increasing productivity, and reducing production costs by eliminating an additional surface coating step.
摘要:
The present invention relates to a resin mixture for melt processing comprising a first resin and a second resin wherein the difference in melt viscosity of the first resin and the second resin is 0.1-3000 pa*s at a shear rate of 100-1000 s-1 and at a processing temperature of the mixture, pellet, and a method for preparing a molded product by using the same. The mixture can improve the mechanical properties and surface characteristics of a molded product, reduce processing time, increase productivity and reduce production costs by omitting an additional surface coating step.
摘要:
The present invention relates to a resin mixture and pellets for melt processing comprising: a first resin; and a second resin having a surface energy difference of between 0.1 and 35 mN/m from the first resin at 25°C, and the invention also relates to a production method for moulded articles using the same. The mixture can not only improve the mechanical properties and the surface properties of the moulded article but can also exhibit the advantage of shortened processing time, increased productivity and reduced production costs through the omission of any additional surface-coating step.