PROCESS FOR RESTORING APPLIED ROOF SEALING WEBS BASED ON PLASTICIZED POLYVINYLCHLORIDE

摘要

A process for restoring laid roof sealing webs containing phthalic acid esters as plasticisers in which the plasticiser content has dropped in the course of time after laying. In the process, the surface of the web is first cleaned, and from 100 to 500 g of plasticiser paste, depending on the residual plasticiser content per square metre of the laid web, are applied thereto in a single or multiple application. The principal constituent of the plasticiser paste comprises esters of phthalic acid with C4-C13 alcohol radicals.