Thermoset resins prepared from dihydric phenol,dihalobenzenoid compound and polyhaloheterocyclic compound
Abstract
Abstract THERMOSET RESINS CONTAINING UNITS OF FORMULAE I, II AND III, IN SUCH PROPORTIONS THAT I IS IN MOLAR EXCESS OF II AND III IS PRESENT TO THE EXTENT F ABOUT TWO-THIRDS OF THIS MOLAR EXCESS, MAY BE MADE VIA A NEW THERMOSETTABLE PROPOLYMER FROM A DOUBLE ALKALI METAL SALT OF A DIHYDRIC PHENOL HO-E-OH, A DIHALOBENZENIOD COMPOUND X-E''-X AND A POLYHALOHETEROCYCLIC COMPOUND (IV) WHERE Z IS:N, OR :C(X'').(X'' IS HALOGEN), SUCH AS PENTACHLOROPYRIDINE OR 2,4,6-TRICHLORO-1,3,5-TRIAZINE. SOME OF THE ALKALI METAL PHENOXIDE MAY BE OMITTED INITIALLY AND IS THEN ADDED TO THE INCOMPLETE PREPOLYMERS FOR CURING. THE COMBINATION OF THE DIHALOBENZENOID COMPOUND WITH AN EQUIMOLAR AMOUNT OF THE ALKALI METAL SALT OF THE DIHYDRIC PHENOL MAY BE REPLACED BY AN ALKALI METAL SALT OF A SUITABLE HALOPHENOL. -(O-E-O)- (I) -(E'')- (II) -C<(-Z=C-N=C-Z=) (III) X-C<(-Z=C(-X)-Z=C(-X)-N=) (IV)
Inventors
- 👤 R Feasey
Bibliographic Details
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