POLYMERS Vol.69 No.7
>> Japanese
COVER STORY
Polymer Festival
On account of the new coronavirus pandemic, Tokyo 2020 Olympic and Paralympic Games will be postponed for approximately 1 year from July (As of the end of March). We strongly believe the coronavirus pandemic will end soon. This month’s issue offers “POlympic” featuring a variety of polymer materials and technologies, inspired by Olympic. And in the latter half of the 1990s, a series of articles titled “Polymer Champion Data” was published to introduce the frontiers of each research field. We hope this issue will be an opportunity to be impressed by the progress of polymers over the past 20 years.
Editors: MATSUOKA, E. SATO, HAYANO, and MATSUNO

Digest for English Readers
328

Hot Topics in Polymer Science in SPSJ
332
Awards for Encouragement of Research in Polymer Science; The Society of Polymer Science, Japan 2018

Commentary
The International Chemistry Olympiad is held in Japan in 2021! Yoshiki CHUJO
333

COVER STORY: Topics and Products
Recent Advances in Thermally Stable Polymers Katsuya MAEYAMA
334
Progress of Plastics Used for Lenses Yasuyuki SOEDA
336
Recent Progress in Soluble Conductive Polymers Hidenori OKUZAKI
338
Progress of EL Quantum Efficiency in OLEDs Chihaya ADACHI
340
Advances in Highly Gas-Permeable Polymer Membranes Toshikazu SAKAGUCHI
342
New Science of Biocompatible Polymers Kazuhiko ISHIHARA
344
Basic Knowledge Changed in Condensation Polymerization Tsutomu YOKOZAWA
346
Science and Technology of Crystallization and Nano-Oriented Crystals Kiyoka OKADA, Masamichi HIKOSAKA
348
Progress in Polymer Simulation Technology Tsuyoshi KOGA
350

PolyMANGA
352

Polymer Science and I: A Personal Account
Challenged by New Fields Yuki TERAYAMA
353

Messages: “Work and Life”
Don’t Forget Appreciations-Uneven life- Ayano NAKAMURA
354

Front-Line Polymer Science
Synthetic Polymer Chemistry Based on Control of Time by Space Aiichiro NAGAKI, Yusuke TAKAHASHI
355

Hidden Items in Laboratory
The First High-Pressure Low-Density Polyethylene in Japan Yasutoyo KAWASHIMA
359

Messages from SPSJ
360
Top of the Page▲