Accession Number : ADA254717


Title :   Phase Transfer Catalytic Nucleophilic Addition Reactions: Synthesis of Polymers and Acetylenic Terminated Resins


Descriptive Note : Final technical rept. Jun 1991-15 Aug 1992,


Corporate Author : DEXTER-HYSOL AEROSPACE INC PITTSBURG CA


Personal Author(s) : Klapprott, David K ; Kellman, Ray


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a254717.pdf


Report Date : 15 Aug 1992


Pagination or Media Count : 30


Abstract : Solid-liquid phase transfer catalysis (SLPTC) was studied to facilitate the preparation of acetylene-terminated (AT) resins. 3-Ethylphenol, as a model system, was found to react with p,p'-difluorobenzophenone and p,p'- difluorodiphenylsulfone in refluxing pyridine using SLPTC to give high yields of the corresponding disubstitution products. However, the p,p'-dichloro derivatives afforded a mixture consisting predominantly of monosubstituted product. 3-Ethynylphenol was reacted under similar conditions to afford AT resins which were compared with AT resins made by conventional synthesis methods. High molecular weight, soluble polyetherether ketones and polysulfones were made by reacting bisphenols and appropriate difluoroaromatic compounds in refluxing pyridine using SLPTC.


Descriptors :   *SYNTHESIS , *POLYMERS , *PHASE , *CATALYSIS , *PLASTICS , *NUCLEOPHILIC REACTIONS , *ACETYLENES , *ADDITION REACTIONS , *TRANSFER , PREPARATION , MOLECULAR WEIGHT , KETONES , POLYSULFONES , ADDITION , PYRIDINES , LIQUID PHASES , WEIGHT , MIXTURES , SOLIDS , LIQUIDS , MODELS


Subject Categories : Organic Chemistry
      Physical Chemistry
      Polymer Chemistry
      Plastics


Distribution Statement : APPROVED FOR PUBLIC RELEASE