Process for producing homo-and copolymers of cyclic acetals
Abstract
Abstract 1. IN A PROCESS FOR PRODUCING MOLDABLE HOMOPOLYMERS OF TRIOXANE OR COPOLYMERS COMPRISING A MAJOR AMOUNT OF UNITS DERIVED FROM TRIOXANE AND A MINOR AMOUNT OF UNITS DERIVED FROM A LINEAR ACETAL OF AN A,W-DIOL OR A CYCLIC ACETAL OF THE FORMULA O<(-C(-R1)(-R2)-C(-R3)(-R4)-(R5)N-) WHEREIN R1, R2, R3 AND R4 MAY BE THE SAME OR DIFFERENT REPRESENT HYDROGEN OR AN ALKYL GROUP WHICH CAN BE HALOGEN-SUBSTITUTED, R5 REPRESENTS AN OXYMETHYLENE RADICAL WHICH CAN BE SUBSTITUTED BY AN ALKYL OR HALOGEN-SUBSTITUTED ALKYL GROUP, AND N IS 1 TO 3, OR WHEN N IS 1, R5 CAN BE THE RADICAL -(O-CH2CH2)M-OCH2- WHEREIN M IS 1 TO 3, AT A TEMPERATURE BETWEEN THE MELTING POINT AND BOILING POINT OF THE MONOMER OR MONOMER MIXTURE IN THE PRESENCE OF A PROTONIC ACID, THE IMPROVEMENT WHICH CONSISTS IN USING AN ANHYDROUS PERFLUOROALKYL SULFONIC ACID WITH 1 TO 18 CARBON ATOMS AS THE PROTONIC ACID.
Inventors
- 👤 K Burg
- 👤 H Schlaf
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
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