Urethane polymers containing a tertiary nitrogen atom, and their

Details Urethane polymers containing a tertiary nitrogen atom, and their Urethane polymers containing a tertiary nitrogen atom, and their

1984-08-06

1985-12-31

Cockeram, Herbert S.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 61, 528 73, 528 78, 528 82, 525458, 525459, C08G 1832, C08G 1838

Patent

active

045622396

ABSTRACT:
A tertiary nitrogen atom-containing urethane polymer which comprises units of the following formulas (I) and (II) as the essential components and units of the following formulas (III), (IV) and (V) as the optional components, the content of the unit of the formula (I) being not less than 10 milliequivalents in terms of the tertiary nitrogen atom per kilogram of the urethane polymer, and has a molecular weight of not less than 500: ##STR1## wherein R.sub.1 and R.sub.2 are each a C.sub.1 -C.sub.4 alkyl group and, when taken together with the adjacent nitrogen atom to which they are attached, represent a nitrogen-containing heterocyclic group, R.sub.3 is a C.sub.1 -C.sub.4 alkyl group, R.sub.4 is an optionally branched C.sub.1 -C.sub.8 alkylene group, m is a positive integer and n is zero or a positive integer but m+n is a number which can provide the unit of the formula (I) with a molecular weight of 131 to 6998 and the bondings in the unit of the formula (I) may be in random and/or block, R.sub.5 is a residue of an organic diisocyanate, R.sub.6 is an optionally branched C.sub.1 -C.sub.8 alkylene group, an aromatic group optionally substituted with one or more C.sub.1 -C.sub.4 alkyl groups and/or one or more halogen atoms or a residue of a polyetherdiol thereof, R.sub.7 is a residue of a dicarboxylic acid and R.sub.8 is a residue of a diamine or a residue of a hydrazine, which is effective in improvement of resistance to color change due to gas.

REFERENCES:
patent: 3461101 (1969-08-01), Oertel et al.
patent: 3461106 (1969-08-01), Oertel et al.
patent: 3475377 (1969-10-01), Rosendahl et al.

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