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Applications of alkyl-3-hydroxy butyrate ester solvents in Coatings and related applications

IP.com Disclosure Number: IPCOM000240690D
Publication Date: 2015-Feb-18
Document File: 7 page(s) / 304K

Publishing Venue

The IP.com Prior Art Database

Related People

Franklin Delano Rector, Jr.: INVENTOR [+3]

Abstract

Eastman Chemical Company developed a new solvent chemistry initially targeting aqueous cleaners markets such as Industrial and Institutional (I&I) cleaners. These solvents are alkyl esters of 3-hydroxybutyric acid, represented by the C3-C5 alkyl (branched and unbranched)-3-hydroxybutyrate structures, which offer an extraordinarily benign toxicity, and excellent efficacy in soil removal. The alkyl hydroxybutyrate solvents and their applications are also described in one or more of US Patent Application Nos. 13/957,616; 13/957,642; 13/957,657; and 13/957,631. Eastman has chosen as an initial entry the n-butyl-3-hydroxybutyrate, trade named Eastman Omnia™ high-performance solvent (Omnia™), which offers optimum performance in our target applications, along with low vapor pressure VOC (LVP-VOC) status to enable compliance with regulatory requirements. In this market both aqueous and non-aqueous systems are used, and Omnia™ brings value to both. As a solvent, Omnia™ also finds utility in a broad variety of applications outside the cleaners market. In this paper a number of applications for Omnia™ and similar structures are discussed, including: 1. Solvent to replace isophorone for Polyvinylidene fluoride (PVDF) based coatings; 2. Solvents for coil and can coatings; 3. Solvents for high temperature bake applications; 4. Solvents in coatings requiring unique tail solvents, 5. Solvents used as coalescents in waterbased latex; 6. Solvent applications where unique solubility is required for halogenated resins; 7. Solvents that impart low surface tension in aqueous coatings; 8. Solvents that impart very low odor to coatings; 9. Solvents for cellulose esters, and 10 Other Applications.

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Applications of alkyl-3-hydroxy butyrate ester solvents in Coatings and related applications

Eastman Chemical Company developed a new solvent chemistry initially targeting aqueous cleaners markets such as Industrial and Institutional (I&I) cleaners. These solvents are alkyl esters of 3- hydroxybutyric acid, represented by the C3-C5 alkyl (branched and unbranched)-3-hydroxybutyrate structures, which offer an extraordinarily benign toxicity, and excellent efficacy in soil removal. The alkyl hydroxybutyrate solvents and their applications are also described in one or more of US Patent Application Nos. 13/957,616; 13/957,642; 13/957,657; and 13/957,631. Eastman has chosen as an initial entry the n-butyl-3-hydroxybutyrate, trade named Eastman Omnia™ high-performance solvent (Omnia™), which offers optimum performance in our target applications, along with low vapor pressure VOC (LVP-VOC) status to enable compliance with regulatory requirements. In this market both aqueous and non-aqueous systems are used, and Omnia™ brings value to both.

As a solvent, Omnia™ also finds utility in a broad variety of applications outside the cleaners market. In this paper a number of applications for Omnia™ and similar structures are discussed, including: 1. Solvent to replace isophorone for Polyvinylidene fluoride (PVDF) based coatings; 2. Solvents for coil and can coatings; 3. Solvents for high temperature bake applications; 4. Solvents in coatings requiring unique tail solvents, 5. Solvents used as coalescents in waterbased latex; 6. Solvent applications where unique solubility is required for halogenated resins; 7. Solvents that impart low surface tension in aqueous coatings; 8. Solvents that impart very low odor to coatings; 9. Solvents for cellulose esters, and 10 Other Applications.


1. Solvents for coatings

Formulators of coatings for a variety of applications desire to develop products that are safer to the user and the environment without having to sacrifice performance. This requires solvents that offer a benign safety profile, are non-halogenated but have oxygenated polar groups, and exhibit excellent performance as solvents for resins used in coatings. Solvents can be a powerful component in coatings to provide the reduction in viscosity needed to allow the coating to wet and flow on a range of substrates being coated. Solvents typically need only comprise about 10-50 weight% of the total coating formulation to work effectively. Still, the user is exposed to solvent vapors. One issue with many traditional solvents, then, is safety in use, both for the user and the environment. Yet the substitution of safer solvents has been unsatisfactory because solvents which meet the requirements for safety and good solvency often do not offer the coating performance and viscosity reduction required.

This paper describes coating formulations based on n-butyl-3-hydroxybutyrate (NBHB or Omnia™), a safe and effective coating solvent. Not only does...