Termoplastik harman bileşimleri

• Main Authors: MARTIN J. GUEST, YUNWA W. CHEUNG
• Format: Patent
• Language: Turkish
• Published: 21.07.2000
• Edition: 7
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

Bu bulus alfa-olefin monomerlerinin vinil halojenür homopolimerleri ve kopolimerleriyle harmanlanmis bir veya daha fazla vinil veya viniliden aromatik monomeriyle ve veya bir veya daha fazla engellenmis alifatik veya sikloalifatik vinil veya viniliden monomeriyle interpolimerlerinin termoplastik bilesimlerine iliskindir. The present invention relates to blend compositions comprising; (A) of from about 1 to about 99 weight percent based on the combined weights of Components A, B and C of at least one substantially random interpolymer; and wherein said interpolymer; (1) contains of from about 0.5 to about 65 mole percent of polymer units derived from; (a) at least one vinylidene aromatic monomer, or (b) at least one hindered aliphatic vinylidene monomer, or (c) a combination of at least one vinylidene aromatic monomer and at least one hindered aliphatic vinylidene monomer; (2) contains of from about 35 to about 99.5 mole percent of polymer units derived from at least one aliphatic alpha -olefin having from 2 to 20 carbon atoms; (3) has a molecular weight (Mn) greater than about 1,000; (4) has a melt index (I2) of from about 0.01 to about 1,000; (5) has a molecular weight distribution (Mw/Mn) of from about 1.5 to about 20; and (B) of from about 99 to about 1 weight percent based on the combined weights of Components A, B, and C of one or more vinyl halide homopolymer(s) or copolymer(s); and (C) of from about 0 to about 70 weight percent based on the combined weights of Components A, B, and C of one or more plasticizers. The novel blend compositions, provide materials with improved processing/property attributes over the unmodified polymers comprising the blends. The blend compositions can exhibit a unique balance of properties including enhanced modulus and barrier properties, improved tensile strength, radio frequency (rf) sealability, solvent bondability, thermal stability and heat resistance depending upon the selection of the individual blend components and their composition ratios. Additionally, the location and the breadth of the glass transition can be controlled by varying the blend composition and plasticizer level. Surprisingly blends including a plasticizer show a single phase material from glass transition temperature data analysis.