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Blends and alloys based on an amorphous to semicrystalline copolymer comprising amide units and comprising ether units, wherein these materials have improved optical properties
Blends and alloys based on an amorphous to semicrystalline copolymer comprising amide units and comprising ether units, wherein these materials have improved optical properties
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机译：基于包含酰胺单元和醚单元的无定形至半结晶共聚物的共混物和合金，其中这些材料具有改善的光学性能
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摘要
Transparent blend or alloy comprising, by weight, the total being 100%: (A) 1 to 99% of at least one copolymer constituent: which is amorphous or has a crystallinity ranging up to semicrystallinity; and which comprises: (A1) amide units, among which is at least one cycloaliphatic unit; (A2) flexible ether units; (B) 99 to 1% of at least one polymer constituent selected from: (Ba) semicrystalline copolyamides comprising amide units (Ba1) and comprising ether units (Ba2), (Bb) semicrystalline polyamides or copolyamides without ether units, (Bc) transparent polyamides or copolyamides without ether units, which are amorphous or weakly crystalline, and alloys based on such polyamides or copolyamides; and (C) 0 to 50% by weight of at least one polyamide, copolyamide, copolyamide comprising ether units or alloy based on such polyamides or copolyamides other than those used in (A) and (B) above. The resulting blend or alloy has a high transparency such that the transmission at 560 nm on a plate 2 mm thick is greater than 50%.
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