发明名称 Method for Producing Cohesive Polyacrylate Adhesive Compounds with a Narrow Molar Mass Distribution
摘要 The invention relates to a method for producing polyacrylate adhesive compounds with a narrow molar mass distribution by means of a radical polymerization and a subsequent increase of the molar masses by reacting with bis- or multi-dienyl compounds, in particular with α,ω-bis-dienyl compounds, in order to increase the cohesion in particular.
申请公布号 US2014329971(A1) 申请公布日期 2014.11.06
申请号 US201214358577 申请日期 2012.09.28
申请人 TESA SE 发明人 Prenzel Alexander
分类号 C09J133/08;C08F220/18 主分类号 C09J133/08
代理机构 代理人
主权项 1. A method for producing acrylate-based polymers, wherein first a controlled radial polymerization reaction of an initial reaction charge comprising at least one acrylate-based monomer is carried out in the presence of at least one chain transfer agent (CTA) having at least one functional group S—C═X, where X=S, O or N, the CTA being selected from the group consisting of dithioesters, dithiocarbonates, dithiocarbamates, trithiocarbonates, imidodithiocarbonates, and xanthates (“RAFT CTAs”), the majority of the CTA molecules being incorporated into the polymer chains that form, whereby the polymer chain in question has the functional group of the incorporated CTA, wherein at least one dienyl compound comprising at least one diene unit which has two conjugated double bonds is contacted with the polymers thus obtained, so that hetero-Diels-Alder reactions are brought about between the conjugated double bonds of the diene unit of each dienyl molecule and a double bond C═X of the functional group S—C═X of the majority of the polymer chains, so that the corresponding polymer chains are linked to the respective dienyl molecule.
地址 Hamburg DE