Polyacetal comb polymers

Details Polyacetal comb polymers Polyacetal comb polymers

1981-12-21

1983-04-19

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525401, 528240, 528241, 528246, 528248, 528270, C08G 600, C08L 6102

Patent

active

043806104

ABSTRACT:
This invention relates to "comb" polymers having high molecular weight and related structurally to polyoxymethylene, but having improved thermal stability. In addition, this invention relates to a method for preparing these high molecular weight "comb" polymers and teaches a process which exhibits reduced reactor fouling and produces a free-flowing powder. Generally the improved polymer is made by copolymerizing trioxane with polyanhydride or copolymerizing trioxane with copolymers of olefins and anhydrides. The improved polymer can optionally be reacted with agents known to react with terminal hydroxy groups to end-cap the polymer.

REFERENCES:
patent: 3293218 (1966-12-01), Sidi
patent: 3378527 (1968-04-01), Case et al.
patent: 3403134 (1968-09-01), Wilson et al.
patent: 3408332 (1968-10-01), Wolf
patent: 3457233 (1969-07-01), Ishida et al.
patent: 3506616 (1970-04-01), Wolf

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