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：EP1469024B1公开日：20131016
摘要：A polyurethane based adhesive composition is prepared by reaction of at leastone aliphatic or alicyclic diisocyanate having an asymmetrical molecular structure and acombination of at least one polypropylene glycol diol and at least one polypropyleneglycol triol. A polyurethane based adhesive composition (I) is prepared by reaction of atleast one aliphatic or alicyclic diisocyanate having an asymmetrical molecular structureand a combination of at least one polypropylene glycol diol and at least one
polypropylene glycol triol whereby the ratio of the number of hydroxyl groups of thediol component to the number of hydroxyl groups of the triol component is 0.7-9.0(1.5-2.5), the ratio of the number of isocyanate groups to the total number of hydroxylgroups is 0.9-1.1 (0.95-1.05) and whereby the diol and triol are combined as diols having amol. wt. of no greater than 1000 with triols having a mol. wt. of at least 1000, preferablyat least 3000 or as diols having a mol. wt. of greater than 1000 combined with triolshaving a mol. wt. of less than 1000. . An independent claim is included for a process for
the production of the adhesive composition (I) comprising placing a premixed mixture ofisocyante-reactive material (polyol component) in a vessel with the isocyante componentin a separate vessel optionally premixed with other components; dosing of both
components via precision pumps through a mixing head or tube to form a homogeneousmixture ; immediate application of the mixed and reacted components onto a sheet-likesupport material having a second adhesive layer at a constant rate; passage of the coatedsupport material through a heated channel to harden the polyurethane composition toform the adhesive; and rolling the coated support material.
申请人：TESA SE,TESA SE,TESA SE
地址：DE
国籍：DE
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