Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1985-03-26
1986-08-05
Lilling, Herbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524505, 524525, 524528, 524570, 524574, 524575, C08K 334, C08L 2300, C08L 5300
Patent
active
046044213
ABSTRACT:
A resin composition is provided which comprises a crystalline propylene-ethylene copolymer resin mixed with mica having a specified average particle diameter and particle size distribution or a rubber-like material so that it shows an excellent balance between rigidity and impact strength and an excellent thermal resistance and provides an excellent appearance when formed in products. In a preferred embodiment, the polypropylene resin composition comprises 50 to 97% by weight of a crystalline propylene-ethylene copolymer resin, 0 to 20% by weight of a rubber-like material, and 3 to 50% by weight of mica having an average particle diameter determined by photo extinction sedimentation method of 0.5 to 4.5.mu. and a particle size distribution of 95% or more by weight for 10.mu. or less, 60% or more by weight for 5.mu. or less, and 10 to 80% by weight for 1.mu. or less.
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Ikezawa Yuji
Koyama Teruhisa
Mitsuno Tatsuyuki
Lilling Herbert J.
Sumitomo Chemical Company Limited
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