Claims
- 1. A polyester prepared by reacting the X and Y functions of a soluble hyperbranched polyester having at least 1 branch per 10 monomer units prepared by conventional polycondensation of one or more monomers of the formula:
- XR.sup.2 [(R.sup.1).sub.m Y].sub.n
- wherein:
- R.sup.1 is a divalent C.sub.1-12 hydrocarbyl radical which is linear or branched aliphatic, alicyclic, aromatic or mixed aromatic-aliphatic;
- R.sup.2 is a C.sub.1-12 hydrocarbyl radical having a valence of (n+1), which radical is linear or branched aliphatic, alicyclic, aromatic or mixed aromatic-aliphatic, or R.sup.2 is r.sup.3 N wherein R.sup.3 is defined as for R.sup.1 ; either of R.sup.1, R.sup.2 or R.sup.3 optionally also containing substitutents that are unreactive under processing conditions;
- X and Y are terminal functions selected from --CO.sub.2 R' and --OR.increment. wherein R' is H or C.sub.1-12 alkyl and R.increment. is H or OC(O)R;
- M is 0 or 1; and
- n is an integer and is at least 2:
- with the provisos that:
- (i) both X and Y are not --CO.sub.2 R' or --OR";
- (ii) no X or Y function is adjacent to another X or Y function;
- (iii) when R.sup.2 is an aliphatic hydrocarbyl radical, Y is --CO.sub.2 R'; and
- (iv) when R.sup.2 is R.sup.3 N, m is 1; with a difunctional reagent.
- 2. The polyester of claim 1 wherein the X and Y functions have been reacted with a diisocyanate.
- 3. The polyester of claim 2 wherein sufficient diisocyanate is reacted to create a linearly linked polyester.
- 4. The polyester of claim 2 wherein sufficient diisocyanate is reacted to create a nodular network polyester.
- 5. A polyester prepared by reacting the X and Y functions of a soluble hyperbranched polyester having at least one branch per 10 monomer units, said polyester being prepared by conventional polycondensation of one or more monomers of the formula:
- XR.sup.2 [(R.sup.1).sub.m Y].sub.n
- wherein
- R.sup.1 is a divalent C.sub.1-12 hydrocarbyl radical which is linear or branched aliphatic, alicyclic, aromatic or mixed aromatic-aliphatic;
- R.sup.2 is a C.sub.1-12 hydrocarbyl radical having a valence of (n+1), which radical is linear or branched aliphatic;
- either of R.sup.1 or R.sup.2 optionally also containing substituents that are unreactive under processing conditions;
- X is CO.sub.2 R';
- Y is OR.increment., wherein R' is H or C.sub.1-12 alkyl and R" is H or OC(O)R';
- m is 0 or 1; and
- n is an integer and is at least 2; with the proviso that:
- (i) no X or Y function is adjacent to another X or Y function with a difunctional reagent.
- 6. The polyester X and Y of claim 5 wherein the X and Y functions have been reacted with a diisocyanate.
- 7. The polyester of claim 6 wherein sufficient diisocyanate is reacted to create a linearly linked polyester.
- 8. The polyester of claim 6 wherein sufficient diisocyanate is reacted to create a nodular network polyester.
Parent Case Info
This is a division of application Ser. No. 07/865,599, filed Apr. 9, 1992, now U.S. Pat. No. 5,183,862, which is a division of application Ser. No. 07/548,681, filed Jun. 22, 1990, now U.S. Pat. No. 5,136,014.
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Divisions (2)
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Number |
Date |
Country |
Parent |
865599 |
Apr 1992 |
|
Parent |
548681 |
Jun 1990 |
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