Olefinic and urethane-terminated ester polyalkadiene
AssigneeLord Corporation
InventorsKirk Joseph Abbey, Ian Christopher Quarmby
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Abstract
An olefinic-terminated polyalkadiene that includes carboxy ester linking groups and at least one nascent secondary hydroxyl group that is capped with a monoisocyanate. This polyalkadiene can be made by reacting a hydroxyl-terminated polyalkadiene with a saturated cyclic acid anhydride to form a carboxylic acid-terminated polyalkadiene, reacting the carboxylic acid-terminated polyalkadiene with an olefinic monoepoxide to form an olefinic-terminated polyalkadiene, then reacting the olefinic-terminated polyalkadiene with a monoisocyanate.
Claims11
A polymer having a representative structure comprising ##STR8## wherein X is a polyalkadiene residue,
- a averages from 1.2 to 2.6 per polymer molecule, provided a is.ltoreq.b,
- b is at least 1.2 per polymer molecule,
- R.sup.1 is a divalent radical that includes at least two carbon atoms and is selected from the group consisting of saturated alkylene, substituted saturated alkylene, arylene, and saturated heterocyclic,
- R.sup.6 is phenyl, napthyl, an alkyl group having from 1 to 24 carbon atoms, substituted phenyl, substituted napthyl, phenylalkyl or napthylalkyl,
- R.sup.7 has the structure ##STR9## wherein R.sup.4 is a divalent radical selected from the group consisting of alkylene, alkylene ester, arylene and alkylene ether, and
- R.sup.3 is hydrogen, an alkyl group of 1 to 4 carbon atoms, --CH.dbd.CH.sub.2, or --R.sup.5 --CH.dbd.CH.sub.2 wherein R.sup.5 is an alkylene radical having 1 to 4 carbon atoms.
Dependencies are inferred from the claim text.