Polymeric and oligomeric formals

Details Polymeric and oligomeric formals Polymeric and oligomeric formals

1976-04-29

1978-10-10

Phynes, Lucille M.

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

Synthetic resins

From aldehyde or derivative thereof as reactant

260 457R, 260 4575R, 260 4575B, 260611A, 260615P, 526 12, 526 13, 526 24, 528243, 528230, C08G 400

Patent

active

041196120

ABSTRACT:
A polymeric formal having the general formula ##STR1## wherein p is 0 or 1, n is a positive integer from 2 to 200 and R represents optionally halogen-substituted straight-chained or branched-chained alkyl radicals having 3 to 8 carbon atoms, an aryl radical or an aralkyl radical which can be substituted on one or both sides with alkyl or hydroxyalkyl ether groups; improved methods for the preparation of such formals, tetrabromoxylylene-bis-(.beta.-hydroxyethylether) compounds employed in the preparation of such formals and the use of such polymeric and oligomeric formals as flame retardant agents in plastic compositions especially thermoplastic and polycondensation plastic compositions.

REFERENCES:
patent: 2071252 (1937-02-01), Carothers
Jackson, W., & Caldwell J., Advances in Chemistry, vol. 34; 1962, pp. 200-207.

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