RESIN COMPOSITION FOR LIGHT GUIDE BODY PREFORM, LIGHT GUIDE BODY PREFORM, LAMINATE LIGHT GUIDE BODY PREFORM, LIGHT GUIDE BODY FOR AREA LIGHT SOURCE DEVICE, AND AREA LIGHT SOURCE DEVICE

• Main Authors: YAGI KENJI, SAIKI SHINJI, SECHI YOUHEI, ONUMA FUMIKO, SHIMIZU MINORU, KURACHI YOSHIYA, YAMASHITA TOMOYOSHI
• Format: Patent
• Language: English; Korean
• Published: 26.03.2015
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A resin composition for a light guide article-preform is described, which enables the formation of a foamed layer having a large light scattering effect on the surface of a shaped article by laser irradiation processing at low cost. More specifically, the present invention relates to: a resin composition for a light guide article-preform, which contains a resin having a mass average molecular weight of 60,000 to 150,000, and has a 30% thermal mass reduction temperature of 310° C. or lower and a difference between a 40% thermal mass reduction temperature and a 20% thermal mass reduction temperature of 7° C. or less when a thermal mass measurement is performed with starting from the state at 100° C. under air at a temperature rising rate of 5° C./min.