| 摘要 |
<p>#CMT# #/CMT# Amide-ether based copolymer (I) is new. The amide is made up of a diamine and a dicarboxylic acid, preferably linear aliphatic acids. The diamine is a cycloaliphatic diamine. The amide units optionally have another polyamide comonomer. (I) has a high degree of transparency of greater than 75% at 560 nm on a plate with a thickness of 2 mm. (I) is present in an amorphous-/crystalline with an enthalpy of fusion during the second heat of a differential scanning calorimeter of an International Organization for Standardization is 30 J/g. (I) has a glass transition temperature (T g) of 75[deg]C. #CMT# : #/CMT# Independent claims are included for: (1) the preparation of (I); and (2) a shaped article, preferably transparent or translucent article like a fiber, tissue, film, sheet, rod, tube or injected part made up of (I). #CMT#USE : #/CMT# (I) is useful to make the shaped article, particularly transparent or translucent article e.g. a fiber, tissue, film, sheet, rod, tube or injected part, which is useful (i) to make sports article, element of sports shoes, sports implements (e.g. ice skates, ski-binding, rackets, bats, boards, horseshoes, flippers, golf balls and other leisure items), (ii) in building repair work, and (iii) as a tool or equipment of roads subjected to climatic and mechanical aggressions and as protecting articles (e.g. helmets, goggles, spectacle arms, a car element as headlight protector, mirror, small parts of all types of vehicles, tanks, especially scooters, motor cycles and mopeds) (claimed). #CMT#ADVANTAGE : #/CMT# (I) has a high degree of transparency (claimed), mechanical properties (e.g. very good flexibility), and has chemical-, UV- and impact resistance properties. #CMT#INORGANIC CHEMISTRY : #/CMT# Preferred Catalyst: The catalyst is titanium, zirconium or hafnium or a strong acid e.g. phosphoric acid, hypophosphorous acid or boric acid. #CMT#POLYMERS : #/CMT# Preparation (Claimed): Preparation (I) comprises preparing a polyamide by polycondensation of the diamine, dicarboxylic acid and optionally the other polyamide comonomers in the presence of a chain limiter e.g. dicarboxylic acids, and reacting the obtained polyamide blocks with polyether blocks in the presence of a catalyst. Preferred Process: The polycondensation step is conducted at 240-280[deg]C. Preferred Components: The cycloaliphatic diamine is bis-(3-methyl-4-aminocyclohexyl)-methane (preferred), p-aminodicyclohexyl methane (PACM), isophoronediamine, bis-(4-aminocyclohexyl)-methane (BACM), 2,2-bis-(3-methyl-4-aminocyclohexyl) propane (BMACP) or 2,6-bis-(methyl amino)-norbornane (BAMN). The aliphatic dicarboxylic acids are 6-36 carbon aliphatic carboxylic diacids, preferably 1,10-decanedicarboxylic acid, 1,12-dodecanedicarboxylic acid, 1,14-tetradecanedicarboxylic acid or 1,18 octadecanedicarboxylic acid. The amide has a non cycloaliphatic diamine at 30 mol.% and a non-aliphatic carboxylic diacid at 15 mol.%. The aliphatic carboxylic diacid is aromatic diacids, preferably isophthalic and/or terephthalic acids. The amide monomers comprises less amount of monomers e.g. lactams or alpha ,omega -aminocarboxylic acids. The lactams are lactams having at least 6 carbons, preferably caprolactam, oenantholactam or lauryllactam. The alpha -omega -aminocarboxylic acids are acids having at least 6 carbons, preferably aminocaproic acid, amino-7-heptanoic acid, amino-11-undecanoic acid or amino-12-dodecanoic acid. (I) comprises the amide units at 50-95 wt.% of which the number of carbons per amide unit is >=9. (I) is a polyamide-polyether block copolymer of a molecular weight of 500-12000 g/mol, preferably 2000-6000 g/mol. The polyether block is obtained by a polyol polyalkylene ether comprising a polyalkylene diol ether. The polyalkylene diol ether is polyethylene glycol, polypropylene glycol, polytrimethylene glycol and/or polytetramethylene glycol. The polyether block comprises polyoxyalkylene with amine chains. The polyether block has a molecular weight of 200-4000 g/mol, preferably 300-1100 g/mol. The glass transition temperature of (I) is 90[deg]C. The enthalpy of fusion of (I) is =10-25 J/g. (I) further comprises thermal stabilizers, UV stabilizers, dyes, nucleating agents, plasticizers, agents improving the impact resistance, or additives having a refractive index close to (I). (I) is a copolymer characterized by the fact that the flexible ethers are highly hydrophilic, preferably polyether block of polyethylene glycol type or its copolymers with polypropylene glycol or polytrimethylene glycol, which confers antistatic and breathable properties to (I). (I) has additives like antistatic additive for reinforcing global antistatic effect and for increasing the compatibility with other polymers, copolymer, alone or an additive copolymer to give additional antistatic or breathable properties to (I). The dicarboxylic acid is used as chain limiter, which is introduced in stoichiometric excess with respect to the diamines. #CMT#EXAMPLE : #/CMT# 3,3'-Dimethyl-4,4'-diamino dicyclo hexyl methane (16.446 kg) and tetra decanedioic acid (15.085 kg) were reacted in an autoclave under nitrogen medium at 260[deg]C for an hour at 40 rpm. The obtained polyamide was treated with polytetramethylene glycol (3.51 kg) in the presence of zirconium butylate (45.5 g) at 5 kPa for 30 minutes under vacuum to give polyether-block-polyamide copolymer.</p> |
