专利名称：Polyurethane based pressure sensitive
adhesive
发明人：SCHUEMANN, UWE, DR.,WEILAND,
KIRSTIN,LUEHMANN, BERND, DR.,SUNARTO,SIANTY,HESSE, PHILIPPE,BOEHMER,CARSTEN
申请号：EP04006507.0申请日：20040318公开号：EP1469024A3公开日：20051228
摘要：Pressure-sensitive adhesive based on polyurethane, characterized in that thepolyurethane is composed of the following starting materials which are reacted with oneanother in the stated proportions: a) at least one aliphatic or alicyclic diisocyanate havingin each case an asymmetrical molecular structure, b) a combination of at least onepolypropylene glycol diol and at least one polypropylene glycol triol, the ratio of thenumber of hydroxyl groups in the diol component to the number of hydroxyl groups inthe triol component being between 0.7 and 9.0, preferably between 1.5 and 2.5,additionally the ratio of the number of isocyanate groups to the total number ofhydroxyl groups being between 0.9 and 1.1, preferably between 0.95 and 1.05, and thediols and triols alternatively being selected and combined in each case as follows: diolshaving a molecular weight of less than or equal to 1000 are combined with triols whosemolecular weight is greater than 1000, preferably greater than or equal to 3000, diolshaving a molecular weight of greater than 1000 are combined with triols whose
molecular weight is less than 1000.
申请人：TESA AG
地址：Quickbornstrasse 24 20253 Hamburg DE
国籍：DE
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