Weather-and impact-resistant resin composition comprising a graft copolymer containing multi-layer polymer particles and a rigid resin

Abstract

Abstract A WEATHER- AND IMPACT-RESISTANT RESIN COMPOSITION OBTAINED BY POLYMERIZING 5 TO 1900 PARTS BY WEIGHT OF A MONOMER MIXTURE (B) OF 90 TO 10 PARTS BY WEIGHT OF AN AROMATIC VINYL COMPOUND AND 10 TO 90 PARTS BY WEIGHT OF AT LEAST ONE ACRYLIC UNSATURATED COMPOUND (100 PARTS BY WEIGHT IN TOTAL) IN THE PRESENCE OF 100 PARTS BY WEIGHT (SOLIDS) OF A LATEX OF A CROSSLINKED ELASTOMER (A) CONSISTING OF 60 TO 99.9 PARTS BY WEIGHT OF AT LEAST ONE ACRYLIC ESTER, 39.9 TO 0 PART BY WEIGHT OF AT LEAST ONE MONOMER COPOLYMERIZABLE THEREWITH, AND 0.1 TO 10 PARTS BY WEIGHT OF A CROSSLINKING MONOMER HAVING 2 OR MORE FUNCTIONAL GROUPS, WHICH IS COPOLYMERIZABLE WITH BOTH SAID MONOMERS, AND/OR AN ORGANIC PEROXIDE (100 PARTS BY WEIGHT IN TOTAL): AND, IF DESIRED, MIXING A RIGID RESIN (D) WITH THE RESULTING COPOLYMER (C) SO THAT THE COMPOSITION BEING TAINS 5 TO 40% BY WEIGHT OF (A), THE COMPOSITION BEING CHARACTERIZED IN THAT THE PARTICLES OF SAID CROSSLINKED ELASTOMER LATEX ARE PRODUCED IN 2 OR MORE SEPARATE STEPS SO THAT THE FIRST LAYER, I.E. THE MOST INNER LAYER OF THE PARTICLES CONTAINS 90 TO 40 PARTS BY WEIGHT OF THE 100 PARTS BY WEIGHT OF (A) AND HAS A DEGREE OF SWELLING OF 7 TO 30 AND THE SECOND OR SUBSEQUENT LAYERS, I.E. OUTER LAYER CONTAIN 10 TO 60 PARTS BY WEIGHT OF THE 100 PARTS BY WEIGHT OF (A) AND HAVE AT LEAST TWO LAYERS DIFFERENT WHEREBY THE PARTICLES HAVE AT LEAST TWO LAYERS DIFFERENT IN COMPOSITION AND/OR DEGREE OF SWELLING, AND THE OUTER LAYER OR LAYERS OF THE PARTICLES ARE HIGHER IN ELASTICITY THAN THE INNER LAYER.

Inventors

• 👤 T Kato
• 👤 R Handa
• 👤 J Kobayashi
• 👤 M Izumi
• 👤 K Chikanishi

Bibliographic Details