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公开(公告)号：EP1572773B1
公开(公告)日：2008-07-09
申请号：EP03814643.7
申请日：2003-12-03
CPC分类号： C08G18/6674 , C08G18/1825 , C08G18/2027 , Y10T428/31565
摘要： Breathable thermoplastic polyurethanes are prepared from the reaction of a polyol component, a polyisocyanate component, and a chain extender in the presence of a metal-free catalyst. The metal-free catalyst comprises a polyalcohol amine, a tertiary amine catalyst, or a combination thereof. The polyurethanes of the present invention are suitable for film applications as they form breathable films which are permeable to water vapor but not air or water. The polyurethane compositions are substantially metal-free, have low extractables, and excellent melt strength.
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公开(公告)号：EP2247639B1
公开(公告)日：2019-03-13
申请号：EP09703444.1
申请日：2009-01-20
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公开(公告)号：EP2247639A2
公开(公告)日：2010-11-10
申请号：EP09703444.1
申请日：2009-01-20
CPC分类号： C08G18/664 , C08G18/3206 , C08G18/3215 , C08G18/36 , C08G18/4202 , C08G18/4233 , C08G18/4238 , C08G18/7671 , C08G2120/00 , C08G2250/00 , C08K5/0016 , C08K5/01
摘要： The present invention relates to a soft, semicrystalline, thermoplastic elastomer composition which is comprised of (I) a hydrophobic thermoplastic block copolymer which is comprised of (I) the reaction product of (1) a hydrophobic polyol or polyamine, (2) a polyisocyanate or an aromatic dicarboxylic acid, and (3) a chain extender containing 2 to 20 carbon atoms, or the reaction product of (1) a hydrophobic polyol or polyamine, and (2) a carboxyl terminated telechelic polyaminde sequence; wherein the hydrophobic polyol or polyamine has a number average molecular weight in the range of from 1,000 to 4,000 Daltons; wherein the hydrophobic thermoplastic block copolymer has a weight average molecular weight in the range of 50,000 to 1,000,000 Daltons; and (II) from 1 to 80 weight percent of a mineral oil, wherein the soft, semicrystalline, thermoplastic elastomer composition has a Shore A hardness which is within the range of 20 to 80.
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