Polymers characterized by 1,3-imidazolidine-1,3-diyl rings plasticized with phosphate esters
AssigneeExxon Research & Engineering Co.
InventorTad L. Patton
Life of this patent
Estimating the term…
Abstract
Normally intractable polymers of the structure: ##STR1## wherein X is O or NH, provided at least one X is O, such as poly(parabanic acids) are made extrudable by composition with greater than 15 to 60 weight percent of phosphate ester of the structure (R.sub.1 --O).sub.3 P=O wherein R.sub.1 is: ##STR2## and each R.sub.2 and R.sub.3 is independently selected from H or --CH.sub.3 or (b) an alkyl radical having 1 to 8 carbon atoms.
Claims27
A stable meltable composition comprising heterocyclic polymers characterized in the repeating units by the tri-substituted 1,3-imidazolidine-1,3-diyl ring:
- ##STR13## wherein X=O or NH, provided at least one X is O and a plasticizing amount greater than 15 wt.% to about 60 wt% of unhalogenated organic phosphate esters of the structure:
- (R.sub.1 --O).sub.3 P=O wherein R.sub.1 is:
- ##STR14## and each of R.sub.2 and R.sub.3 is independently selected from H or --CH.sub.3 or (b) an alkyl radical having 1 to 4 carbon atoms.
A stable meltable composition comprising heterocyclic polymers having the repeating unit:
- --Q--R].sub.n wherein Q is ##STR15## X=O or NH, provided at least one X is O, R is an organic moiety which may be aliphatic, alicyclic, aromatic or mixtures thereof and n is sufficiently large to produce a solid product and a plasticizing amount greater than 15 wt% to about 60 wt% of unhalogenated organic phosphate esters of the structure:
- (R.sub.1 --O).sub.3 P=O wherein R.sub.1 is:
- ##STR16## and each of R.sub.2 and R.sub.3 is independently selected from H or --CH.sub.3 or (b) an alkyl radical having 1 to 4 carbon atoms.
Dependencies are inferred from the claim text.