公开(公告)号：US3366707A

公开(公告)日：1968-01-30

申请号：US41158264

申请日：1964-11-16

Applicant: EXXON STANDARD SA

Inventor： ANDRE DELALANDE ,  CHARLES GANGLOFF ,  JACQUES LABBE ,  ROBERT MICHELET ,  ANDRE RAUCH

IPC: C08F8/32 ,  C08L21/00 ,  C08L61/00 ,  C09D5/34 ,  C09J123/16 ,  C09J123/22 ,  C09K3/10

CPC classification number: C09K3/10 ,  C08F8/32 ,  C08L21/00 ,  C08L61/00 ,  C08L2666/02 ,  C09D5/34 ,  C09J123/16 ,  C09J123/22 ,  C09K2200/0239 ,  C09K2200/061 ,  C09K2200/0617 ,  Y10T428/2874 ,  Y10T428/2883 ,  C08L2666/08 ,  C08F210/12

Abstract: A mastic composition comprises at least one non-vulcanized elastomer, at least one phenolformaldehyde or aminoplast resin and at least one water-repellent resin having adhesive properties. The water-repellent resins are polydienic resins such as petroleum resins obtained by polymerization of mono- and di-olefins such as those obtained in steam-cracked petroleum distillates, using Friedel-Crafts catalysts. Specified elastomers are butyl rubber, halogenated butyl rubbers, chloroprene rubber, ethylenepropylene rubbers, polyisobutylenes, reticulated polyethylenes and elastomeric copolymers of one or more mono-olefins and endocyclic hydrocarbons containing a bridge formed by one or more methylene groups. The proportions of the constituents of the mastic are preferably from 5 to 500 parts thermosetting resin and from 5 to 500 parts of water-repellent resin per 100 elastomer. There may also be present fillers, pigments, plasticizers and additionl adhesive agents while the intimate mixing of the ingredients may take place by polymerization in the presence of peroxide catalysts.