Claims
- 1. A method for preparing a resin composition comprising ester-terminated polyamide, the method comprising reacting x equivalents of carboxylic acid from diacid or a reactive equivalent thereof, y equivalents of amine from diamine and z equivalents of hydroxyl from monoalcohol or a reactive equivalent thereof, wherein at least about 50% of the carboxylic acid equivalents are from polymerized fatty acid, monoalcohol is substantially the only monofunctional reactant used to form the resin, the monoalcohol has at least four carbon atoms, 0.9.ltoreq.{x/(y+z)}.ltoreq.1.1, and 0.1.ltoreq.{z/(y+z)}.ltoreq.0.7.
- 2. The method of claim 1 wherein a reaction mixture comprising diacid, diamine and monoalcohol are reacted to yield the resin.
- 3. The method of claim 1 wherein a reaction mixture consisting essentially of x equivalents of carboxylic acid from diacid, y equivalents of amine from diamine and z equivalents of hydroxyl from monoalcohol is heated to yield the resin.
- 4. The method of claim 1 wherein all equivalents of carboxylic acid come from polymerized fatty acid.
- 5. The method of claim 1 wherein between 1% and 50% of the carboxylic acid equivalents come from a diacid of the formula HOOC--R.sup.2 --COOH wherein R.sup.2 is a C.sub.4-19 hydrocarbon group.
- 6. The method of claim 1 wherein the diamine has the formula H.sub.2 N--R.sup.3 --NH.sub.2 and R.sup.3 is a C.sub.2-36 hydrocarbon group.
- 7. The method of claim 1 wherein at least 50% of the amine equivalents are contributed by a diamine of the formula H.sub.2 N--R.sup.3 --NH.sub.2 wherein R.sup.3 is a C.sub.2-36 hydrocarbon group, and at least 1% of the amine equivalents are contributed by one or more diamines selected from ##STR8## and H.sub.2 N--R.sup.3 --NH.sub.2, wherein R.sup.3 is selected from polyalkylene oxide, polyalkylene amine, or ##STR9## wherein R.sub.c is a C.sub.1-3 alkyl group.
- 8. The method of claim 1 wherein the monoalcohol has the formula R.sup.1 --OH and R.sup.1 is a C.sub.12-22 hydrocarbon group.
- 9. The method of claim 1 wherein x/(y+z) is substantially equal to 1.
- 10. The method of claim 1 wherein 0.2.ltoreq.{z/(y+z)}.ltoreq.0.5.
- 11. The composition prepared by the method of claim 1.
- 12. The composition of claim 11 further comprising a low polarity liquid.
- 13. The composition of claim 12 which is transparent or translucent.
- 14. The composition of claim 12 which is a self-supporting gel.
- 15. The composition of claim 12 which does not display syneresis.
- 16. The composition of claim 12 having at least about 5 weight percent and less than about 50 weight percent of the resin composition, based on the total weight of low polarity liquid and the resin composition.
- 17. The composition of claim 12 wherein the low polarity liquid comprises a hydrocarbon.
- 18. The composition of claim 17 wherein the hydrocarbon is an oil.
- 19. A method for preparing a transparent or translucent gel, comprising combining a low polarity liquid with a resin composition, the resin composition comprising ester-terminated polyamide of formula (1): ##STR10## wherein n designates a number of repeating units such that ester groups are from 10% to 50% of the total of the ester and amide groups;
- R.sup.1 at each occurrence is independently selected from an alkyl or alkenyl group containing at least 4 carbon atoms;
- R.sup.2 at each occurrence is independently selected from a C.sub.4-42 hydrocarbon group with the proviso that at least 50% of the R.sup.2 groups have 30-42 carbon atoms;
- R.sup.3 at each occurrence is independently selected from an organic group containing at least two carbon atoms in addition to hydrogen atoms, and optionally containing one or more oxygen and nitrogen atoms; and
- R.sup.3 at each occurrence is independently selected from hydrogen, C.sub.1-10 alkyl and a direct bond to R.sup.3 or another R.sup.3a such that the N atom to which R.sup.3 and R.sup.3a are both bonded is part of a heterocyclic structure defined in part by R.sup.3a --N--R.sup.3, such that at least 50% of the R.sup.3a groups are hydrogen.
- 20. A method for preparing a transparent or translucent gel, comprising combining a low polarity liquid with a resin according to claim 11.
- 21. A cosmetic comprising a resin composition comprising ester-terminated polyamide of formula (1): ##STR11## wherein n designates a number of repeating units such that ester groups are from 10% to 50% of the total of the ester and amide groups;
- R.sup.1 at each occurrence is independently selected from an alkyl or alkenyl group containing at least 4 carbon atoms;
- R.sup.2 at each occurrence is independently selected from a C.sub.4-42 hydrocarbon group with the proviso that at least 50% of the R.sup.2 groups have 30-42 carbon atoms;
- R.sup.3 at each occurrence is independently selected from an organic group containing at least two carbon atoms in addition to hydrogen atoms, and optionally containing one or more oxygen and nitrogen atoms; and
- R.sup.3a at each occurrence is independently selected from hydrogen, C.sub.1-10 alkyl and a direct bond to R.sup.3 or another R.sup.3a such that the N atom to which R.sup.3 and R.sup.3a are both bonded is part of a heterocyclic structure defined in part by R.sup.3a --N--R.sup.3, such that at least 50% of the R.sup.3a groups are hydrogen.
- 22. A cosmetic comprising the composition of claim 11.
- 23. A personal care product comprising a resin composition comprising ester-terminated polyamide of formula (1): ##STR12## wherein n designates a number of repeating units such that ester groups are from 10% to 50% of the total of the ester and amide groups;
- R.sup.1 at each occurrence is independently selected from an alkyl or alkenyl group containing at least 4 carbon atoms;
- R.sup.2 at each occurrence is independently selected from a C.sub.4-42 hydrocarbon group with the proviso that at least 50% of the R.sup.2 groups have 30-42 carbon atoms;
- R.sup.3 at each occurrence is independently selected from an organic group containing at least two carbon atoms in addition to hydrogen atoms, and optionally containing one or more oxygen and nitrogen atoms; and
- R.sup.3a at each occurrence is independently selected from hydrogen, C.sub.1-10 alkyl and a direct bond to R.sup.3 or another R.sup.3a such that the N atom to which R.sup.3 and R.sup.3a are both bonded is part of a heterocyclic structure defined in part by R.sup.3a --N--R.sup.3, such that at least 50% of the R.sup.3a groups are hydrogen.
- 24. A personal care product comprising the composition of claim 11.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a Divisional of U.S. patent application Ser. No. 08/734,523, filed Oct. 18, 1996, now U.S. Pat. No. 5,783,657, issued Jul. 21, 1998.
US Referenced Citations (32)
Non-Patent Literature Citations (1)
Entry |
Yasuda et al., "Novel Low-molecular-weight Organic Gels: N,N',N"--Tristearyltrimesamide/Organic Solvent System," Chemistry Letters, pp. 575-576, 1996. The month in the date of publication is not available. |
Divisions (1)
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Number |
Date |
Country |
Parent |
734523 |
Oct 1996 |
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