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Patent

Olefin based copolymer having controlled crstalline porpoerty and molecular weight distribution

Park Sang Eun, +6 more
TLDR
In this article, an olefin-based copolymer with novel crystalline properties has been proposed, which enables production of molded articles with enhanced impact strength and mechanical properties in compounding with other resins.
Abstract: 
The present invention relates to an olefin-based copolymer which has novel crystalline properties, and enables production of molded articles with enhanced impact strength and mechanical properties in compounding with other resins. The olefin-based copolymer includes an ethylene repeating unit and an alpha-olefin-based repeating unit. When analyzed by a temperature rising elution fractionation method, the olefin-based copolymer shows a first fraction and a second sub-crystalline fraction at a predetermined temperature respectively. When each weight average molecular weight of the first fraction and the second sub-crystalline fraction are calculated, a certain ratio is satisfied.

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Patent

Polyethylene and preparation method therefor

Park Ha Na, +4 more
TL;DR: In this article, a method for polyethylene exhibiting an improved low temperature sealing property through an increase in the amount and molecular weight of a low crystalline polymer and a preparation method therefor is presented.
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Patent

Ethylene-based polymer compositions for use as a blend component in shrinkage film applications

Teresa P. Karjala, +5 more
TL;DR: In this paper, an ethylene-based polymer composition has been discovered and is characterized by a Comonomer Distribution Constant greater than about 45, which is useful for making many articles, especially including films.
Patent

Olefin-based polymer

Sang Eun Park, +4 more
TL;DR: In this paper, an olefin-based polymer including an elution temperature 1 (Te1) and an eluction temperature 2 (Te2), which are elution temperatures of the OE polymer in a temperature range from −20° C to 130° C.
Patent

Polypropylene-based composite

Woo Ji Yoon, +6 more
TL;DR: In this paper, a polypropylene-based composite capable of exhibiting impact strength characteristics, particularly, significantly improved impact strength at low temperatures, together with excellent strength characteristics without using a separate additive, was presented.
Patent

Olefin-based elastomer

Woo Ji Yoon, +6 more
TL;DR: In this article, an olefin-based elastomer is described, which has a density of 0.86-0.91 g/cc and a melting index (MI) between 0.1-50 g/10 min, and the tensile strength is 20-400 kgf/cm^2.