| 摘要 |
#CMT# #/CMT# Segmented block copolymer (I) is claimed. #CMT# : #/CMT# Segmented block copolymer of formula -[BD-BM] n- (I) is claimed. BD : rigid block of a polymer sequence comprising a polyamide block (PA block); BM : polymer sequence comprising a polyether block (block PE) and polyester block (PES block); and n : number of -BD-BM- units of the copolymer. The percentage by weight of the PE blocks in copolymer is strictly greater than 15% and the PES blocks have a glass transition temperature (T g) less than 10[deg] C. Independent claims are included for: (1) an article comprising the copolymer (I); and (2) a golf ball comprising a core, an external coating and optionally intermediate layers between the core and the outer coating, where at least one of the part comprises the copolymer (I). #CMT#USE : #/CMT# (I) is useful in an article i.e. used as a part of sports footwear, sports utensils comprising ice skates, skis bindings, rackets, sports bats, sports plates, snowboarders, horseshoes, flipper, golf balls, articles of leisure craft, road tools or equipment subjected to climatic and mechanical aggressions, protective articles comprising helmet, sunglasses, goggles, parts of vehicles, particularly for scooters, mopeds, motorcycles, cars and bicycles as guard lights, mirrors, tanks and band belt. The copolymer (I) is also useful for manufacture a product with the exclusion of a hot melt adhesive (all claimed). #CMT#ADVANTAGE : #/CMT# The copolymer reduces the moisture resumption of the golf ball and avoids the negative impact of such a takeover on its mechanical properties e.g. the ability to compression, ability to achieve starting a high speed and ability to improve the coefficient of restitution. #CMT#POLYMERS : #/CMT# Preferred Components: The percentage by weight of PE blocks in the copolymer is greater than 40%. The percentage by weight of PA blocks in the copolymer is less than 85%, preferably less than 30%. The PES blocks have a T gof less than 0[deg] C, preferably less than - 30[deg] C. The PA blocks have carboxylic or amine terminations. The PA blocks are homopolyamide structure obtained by polymerization of a lactam (a), an amino acid (b) or a dicarboxylic acid diamine couple (c), or a copolyamide structure obtained by polymerization of a mixture of (a), (b) and (c). The diamine is 2-40C aliphatic or (non)aromatic cyclical diamines, preferably 1,4-tetramethylenediamine, 1,6-hexamethylenediamine, 1,9-nonamethylenediamine, 1,12-dodecamethylenediamine, trimethylhexamethylene diamine, bis-(3-methyl-4-aminocyclohexyl) methane isomers, paraaminodicyclohexyl methane, isomers of 2,2-bis-(3-methyl-4-aminocyclohexyl)-propane, isomers of bis (4-aminocyclohexyl)-methane, 2,2-bis (3-methyl-4-aminocyclohexyl) propane, 2,6-bis (aminomethyl) norbornane, para-amino-di-cyclo-hexyl-methane, isophoronediamine, m-xylene diamine and piperazine (Pip). The lactams are 4-12C lactams, comprising caprolactam, oenantholactam and lauryllactam. The PA blocks are PA 6, PA 11, PA 12 and the blocks PA 4.6, PA4.12, PA4.14, PA 4.18, PA 6.6, PA 6.10, PA 6.12, PA 6.14, 6.18 PA, PA Pip10, PA9.6, PA 9.12, PA 10.10, PA 10.12, PA 10.14, 10.18 PA, PA 6/11 and PA11/12. The BM blocks are polyethylene glycol (PEG), propylene glycol (PPG), polytrimethylene glycol (PO3G), polytetramethylene glycol (PTMG), poly(3-methyl tetrahydrofuran), and their blocks or statistic copolymers. The PES blocks are obtained from polycondensation of a dicarboxylic acid and a diol, where the dicarboxylic acid is a dimerized fatty acid. ORGANIC CHEMSTRY - Preferred Components: The dicarboxylic acid couple (dicarboxylic acid.diamine) is dicarboxylic acids having 2-40 carbon atoms, preferably 6-18 carbon atoms, comprising aliphatic dicarboxylic acids comprising 1,10-decanedioic acid, 1,12-dodecanedicarboxylic acid, 1,14-tetradecanedicarboxylic acid, 1,18-octadecane dioic acid, aromatic dicarboxylic acids comprising isophthalic acid, terephthalic acid and fatty acid dimers obtained by dimerization of two fatty acids comprising oleic acid, linoleic acid, linolenic acid, palmitoleic acid or elaidic acid, or by hydrolysis of vegetable fats or oils comprising sunflower oil, soybean oil, olive oil, rape seed oil or cotton seed oil. The amino acid is 4-12C amino acids comprising aminocaproic acid, amino-7-heptanoic acid, amino-11-undecanoic acid and amino-12-dodecanoic acid. #CMT#EXAMPLE : #/CMT# No suitable example given. |
