Claims
- 1. A process for the manufacture of glycidylester compositions having a hydrolyzable chlorine content of at most 6000 mg/kg, and an epoxy group content above 90% of the theoretical value comprising the steps of:
(a) reacting (i) at least one compound A, wherein compound A is an anhydride has the formula 8wherein R and R′ each independently represents hydrogen or an alkyl group having from 1 to 4 carbon atoms connected to the cyclohexane ring or forms a cyclohexane ring, or a diacid containing one secondary and one tertiary acid group; (ii) at least one compound B, wherein compound B has an oxygen content of at most 35 wt % and contains two aliphatic or cycloaliphatic hydroxyl groups and is a di-secondary hydroxyl compound or a di-primary hydroxyl compound which does not contain beta hydrogen atoms and contains at least three carbon atoms between the two hydroxyl group; (iii) at least one compound C, wherein compound C is a di-secondary carboxylic acid or anhydride; and (iv) a monoepoxide D, wherein monoepoxide D is a mono-glycidyl ester of alpha-alpha-branched carboxylic acid containing from 5 to 19 carbon atoms; at a molar ratio of the components A:B:C of 2:X:Y, wherein Y ranges from greater than 0 to 3, wherein X is Y+1, at a temperature effective to react essentially all the hydroxyl groups as initially present and formed in the reaction mixture have been reacted thereby producing a carboxyl functional polyester having an acid value of less than 280 mgKOH/gr and containing substantially no diacid monomers having acid value of greater than 280 mgKOH/gr; (b) reacting said carboxyl functional polyester from step (a) with an excess epihalohydrin in the presence of a base and optionally a catalyst, at a temperature effective to react essentially all the carboxylic acid groups as initially present in the reaction mixture thereby producing the glycidylester composition.
- 2. The process of claim 1 wherein the carboxyl functional polyester compound has an acid value in the range of 150 mgKOH/gr to 280 mgKOH/gr.
- 3. The process of claim 1 wherein compound B is hydrogenated diphenololpropane.
- 4. The process of claim 1 wherein the reaction in step (a) is carried out at a temperature in the range of 100 to 200° C.
- 5. The process of claim 1 wherein the reaction in step (b) is carried out at a temperature in the range of 20 to 125° C.
RELATED APPLICATION DATA
[0001] The present is a Divisional of U.S. application Ser. No. 10/219,681, filed Aug. 15, 2002, issued as U.S. Pat. No. ______, which is a Divisional of U.S. application Ser. No. 09/645,729, filed Aug. 24, 2000, issued as U.S. Pat. No. 6,451,929, which claims benefit of U.S. Provisional Ser. No. 60/162,375, filed Oct. 29, 1999.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60162375 |
Oct 1999 |
US |
Divisions (2)
|
Number |
Date |
Country |
Parent |
10219681 |
Aug 2002 |
US |
Child |
10840115 |
May 2004 |
US |
Parent |
09645729 |
Aug 2000 |
US |
Child |
10219681 |
Aug 2002 |
US |