公开(公告)号：US3637814A

公开(公告)日：1972-01-25

申请号：US3637814D

申请日：1968-03-27

Applicant: THIOKOL CHEMICAL CORP

Inventor： MAYES NATHAN ,  MICHAELS RONALD

IPC: C08G73/24 ,  C07C3/24

CPC classification number: C08G73/24

Abstract: LIQUID NITROSO RUBBER PREPOLYMERS ARE DISCLOSED HAVING A MOLECULAR WEIGHT BELOW ABOUT 20,000 AND THE GENERAL FORMUAL:

Z-(-CF2-CF2-N(=O)(-CF3))M- -(CF2-CF2-N(=O)(-(CF2)P-COO-R)-

)N-CF2-CF2-Z

WHEREIN R IS SELECTED FROM HYDROGEN AND ALKYL GROUPS OF 1 TO 6 CARBON ATOMS, Z IS SELECTED FROM CHLORINE, BROMINE, IODINE AND -NO2, P IS 2 TO 6 AND THE RATIO M:N IS FROM 1:1 TO 50:1. THE LIQUID PREPOLYMERS MAY BE PREPARED BY COPOLYMERIZING PERFLUORONITROSOMETHANE, TETRAFLUOROETHYLENE AND A NITROSOPERFLUORO ACID OR ESTER IN THE PRESENCE OF A TERMINATOR WHICH MAY BE CHLORINE, BROMINE, IODINE OR NITORGEN DIOXIDE. THE POLYMERS CAN BE CURED WITH SUCH CURING AGENTS AS EPOXIDES, METAL OXIDES AND CHROMIUM PERFLUOROACETATE TO PRODUCE RUBBERS HAVING GOOD PHYSICAL PROPERTIES AND CHEMICAL RESISTANCE.

公开(公告)号：US3660367A

公开(公告)日：1972-05-02

申请号：US3660367D

申请日：1968-11-13

Applicant: THIOKOL CHEMICAL CORP

Inventor： MAYES NATHAN ,  MICHAELS RONALD

IPC: C08G73/24 ,  C08F3/24

CPC classification number: C08G73/24

Abstract: A LINEAR NITROSO POLYMER HAS BEEN PROVIDED BY POLYMERIZING MONOMERS WITH PENDANT, CNVERTIBLE MOIETIES WHICH ARE CROSSLINKABLE. THESE MONOMERS WITH THE CROSSLINKABLE, PENDANT GROUPS CANNOT BE INTRODUCED INTO THE POLYMER DIRECTLY; HENCE, THE CONTRIBUTION RESIDES IN THE ROUTE OF INCORPORATING PRECURSOR MOIETIES IN THE POLYMER BACKBONE AND THEN OBTAINING A POLYMER. THE POLYMERS WITH THE CONVERTIBLE, PENDANT GROUPS ARE DERIVED FROM RECURRING UNITS AS REPRESENTED BY THE GENERAL FORMULAE:

-(CF2-CF2-N(-CF3)-O)M-(CF2-CF2-N(-CF2-CO-Z)-O)N-

OR T-(CF2-CF2-N(-CF3)-O)M-(CF2-CF2-N(-CF2-C-O-Z)-O)N-CF2-

CF2-T

WHEREIN Z IA A-O-(LOWER ALKYL) GROUP OF 1 TO 7 CARBON ATOMS OR CHLORINE; AND T IS A HALOGEN, A PERHALOALKYL, -NO, OR-NO2, AND THE RATIO M:N IS FROM 0:1 TO 50:1. LIQUID AND SOLID POLYMERS ARE PROVIDED AS WELL AS ELASTOMERS DERIVED THEREFROM. A METHOD FOR PREPARING AND CONVERTING THESE MONOMERS HAS ALSO BEEN DISCLOSED.