Polyester aminoalkylalkoxysilanes

A process for preparing a polyester aminoalkylalkoxysilane by the Michael addition reaction which comprises reacting an unsaturated conjugated polyester having a molecular weight of at least 1000 and comprising units of the formula ##STR9## wherein R is a divalent hydrocarbon radical;

• a is a mole fraction of 0 or 0.004 to 0.6;
• and b and d are mole fractions ranging from about 0.004 to about 0.6;
• with an aminoalkylalkoxysilane of the formula ##STR10## wherein R.degree. is a monovalent alkyl, aryl or aralkyl group;
• X is a monovalent alkoxy group;
• y is 0 or 1;
• v is an integer of 1 to 6;
• and z is 0, 1 or 2;
• at a temperature of from about 0.degree. C to about 235.degree. C to produce the polyester aminoalkylalkoxysilane.

A process for preparing a polyester aminoalkylalkoxysilane by the Michael addition reaction which comprises

• A. reacting an unsaturated conjugated polyester having a molecular weight of at least 1000 and comprising units of the formula ##STR11## wherein R is a divalent hydrocarbon radical;
• a is a mole fraction of 0 or 0.004 to 0.6;
• and b and d are mole fractions ranging from about 0.004 to about 0.6;
• with an organic diisocyanate to form a chain-extended unsaturated conjugated polyester having a molecular weight of at least 5000, and
• B. reacting said chain-extended unsaturated conjugated polyester with an aminoalkylalkoxysilane of the formula ##STR12## wherein R.degree. is a monovalent alkyl, aryl or aralkyl group;
• X is a monovalent alkoxy group;
• y is 0 or 1;
• v is an integer of 1 to 6;
• and z is 0, 1 or 2;
• at a temperature of from about 0.degree. C to about 235.degree. C to produce the polyester aminoalkylalkoxysilane.