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Applications of alkyl-3-hydroxy butyrate ester solvents

IP.com Disclosure Number: IPCOM000240318D
Publication Date: 2015-Jan-22

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EASTMAN CHEMICAL COMPANY: OWNER [+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. Aqueous cleaners; 2. Non-aqueous cleaners; 3. Inert delivery system of other actives in personal care; 4. Household Care, 5. Delivery systems in agriculture; 6. Delivery systems in oil and gas; 7. Dispersant for oil in spills; 8. Oil degreasing solvent; 9. Fuel additives; 10. Intermediates in chemical and pharmaceutical manufacturing (cGMP) process cleaning; 11. Parts cleaners, and 12 Other Applications.

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Applications of alkyl-3-hydroxy butyrate ester solvents

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. Aqueous cleaners; 2. Non-aqueous cleaners; 3. Inert delivery system of other actives in personal care; 4. Household Care, 5. Delivery systems in agriculture; 6. Delivery systems in oil and gas; 7. Dispersant for oil in spills; 8. Oil degreasing solvent; 9. Fuel additives; 10. Intermediates in chemical and pharmaceutical manufacturing (cGMP) process cleaning; 11. Parts cleaners, and 12 Other Applications.


1. Aqueous cleaners

Formulators of aqueous cleaners 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 solvent components that offer a benign safety profile, are non-VOC (regionally defined), and exhibit excellent cleaning performance. In consumer products (e.g. general purpose and glass cleaners) in the United States, a solvent having a vapor pressure below 0.1 mm Hg at 20 C, or a boiling point above 216 C, is designated as a low vapor pressure VOC (LVP-VOC) and, as such, is not included in the calculation or determination of product VOC. Cleaning solutions are most often aqueous in nature and can contain surfactants, chelating agents, solvents, acid or bases to control pH, enzymes, bleaches, colorants and fragrances. Solvents can be a powerful component in cleaners to provide the efficacy needed to remove soils from a range of substrates including floors, walls, countertops, and furniture. Solvents typically need only comprise about 1-15 wt% of the total cleaning solution 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 solvent...