RESIN COMPOSITION FOR CAPSTOCK

• Main Authors: SUGAYA, TAKAHIKO, NISHIMURA, RIICHI, TAJIMA, KAZUHISA
• Format: Patent
• Language: English; French
• Published: 20.06.2002
• Edition: 7
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

An acrylic resin composition suitable for the preparation of capstock for siding panels and having excellent impact resistance, weatherability and processability and a low gloss, which comprises 30 to 100 % by weight of an impact modifier having a multilayer structure and 0 to 70 % by weight of a methyl methacrylate homopolymer or copolymer and whose MFI (melt flow index measured according to ASTM D-1238 at 230°C and a load of 3.8 kg) is not more than 0.35 g/ 10 minutes.