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US 5,212,015 AGranted
Coated substrates comprising polymers derived from monocarbamate diols
AssigneeMinnesota Mining and Manufacturing Company
InventorsSmarajit Mitra, Cecil V. Francis
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Abstract
This invention provides synthetic routes for novel single isomers of monocarbamate diols and their polymerization to provide novel polyesters, polyurethanes, polycarbonates, and the like having pendant carbamate groups on the polymer chain. Devices using some of these novel polymers which demonstrate nonlinear optical activity are also disclosed.
Claims7
An article comprising a substrate having coated on at least one surface thereof a layer of a polymer having the structure ##STR19## wherein R is an alkyl, alkenyl, or aryl group having 1 to 20 carbon atoms;
- R.sup.1 and R.sup.2 can be the same or different and each is selected from hydrogen and alkyl, alkenyl, alkoxyalkyl, aryl, aryloxyalkyl, alkoxyaryl, aralkyl or alkaryl groups, wherein R.sup.1 and R.sup.2 together total from zero to forty carbon atoms, or a pair of R.sup.1 and R.sup.2 together with the carbon atoms to which they are joined can form an aliphatic cyclic structure of 5 to 7 atoms;
- D can be ##STR20## R.sup.5 and R.sup.6 can be the same or different, and each is a divalent organic group selected from (1) aliphatic groups having 1 to 20 carbon atoms, (2) cycloaliphatic groups having 5 to 12 carbon atoms, and (3) arylene groups having 6 to 12 carbon atoms;
- M is a unitary heteroatom selected from --O-- and --S--;
- p is an integer having a value from 1 to 10,000;
- q is an integer which can be zero or greater than zero such that when q is not zero, then the ratio of q to p can be in the range of 1:10,000 to 10,000:1;
- x is an integer from 0 to 20;
- y can be zero or 1 provided that at least one of x and y is not zero;
- z is an integer from 0 to 20;
- and wherein said polymer is uncrosslinked;
- wherein said substrate is transparent to actinic radiation in the wavelength range of 0.3 to 20 micrometers.
7 more elements
Dependencies are inferred from the claim text.