Patent EA-002884-B1 (EA)
Title: Low volatile organic solvent based adhesive
Inventor: CONGELLO CARMEN D
IPC: C09J201/00
Filed: 1998-05-27
Abstract: 1. A solvent based adhesive, comprisingthe following components, wt.%: a first solvent being at least one alkyl substituted naphthalene having 1 or more alkyl groups and from 11 to 14 carbon atoms, or at least one alkyl substituted benzene having 1 or more alkyl groups and from 10 to 14 carbon atoms, or combinations thereof, - from about 38 to about 75 weight percent; a thermoplastic resin - from about 5 to around 20 weight percent; an additional one or more solvents, selected from the group, comprising aliphatic polycarboxylic acids having a total of 4 to 15 carbon atoms, mono- or dialkyl esters thereof having not more than 19 carbon atoms, alkyl chlorides or said polycarboxylic acids having not more than 17 carbon atoms, chlorides of said polycarboxylic acids having a total of 4 to 15 carbon atoms or combinations thereof - from about 5 to around 47 weight percent; wherein the volatility of the amount of said additional one or more solvents are controlled to keep the volatile organic content of said solvent based adhesive as measured by South Coast Air Quality Management District (SCAQMD) Test Method 316A below 450 grams/liter. 2. An adhesive according to Claim 1, characterized in that it additionally comprises ketones, having from 3 to 15 carbon atoms. 3. An adhesive according to Claim 2, characterized in that said ketone is present in the amount of not more than 15 wt.%, relative to said solvent based adhesive weight. 4. An adhesive according to Claim 1, with the proviso that a total amount of any of said additional one or more solvents which have a flash point below 37.8 degree C (100 degree F) as measured by ASTM D3828-87 is less than 10 weight percent and wherein the volatile organic solvent content by Test Method 316A is below 350 g/l. 5. An adhesive according to Claim 1, with the proviso that a total amount of any of said additional one or more solvents which have a flash point below 10 degree C (50 degree F) is less than 5 weight percent. 6. An adhesive according to Claim 1, wherein said thermoplastic resin comprises polyvinyl chloride, chlorinated polyvinyl chloride, acrylonitrile, butadienestyrene, or polystyrene, and wherein said first solvent is present in an amount from about 38 to about 65 weight percent. 7. An adhesive according to Claim 6, wherein said thermoplastic resin is present in an amount from about 5 to about 15 weight percent. 8. An adhesive according to Claim 6, wherein said adhesive comprises from about 5 to about 20 weight percent of chlorinated polyvinyl chloride. 9. An adhesive according to Claim 1, wherein said at least one alkyl substituted naphthalene and/or alkyl substituted benzene is present in an amount from about 20 to about 65 weight percent. 10. An adhesive according to Claim 9, wherein said the volatile organic content by Test Method 316A is below 350 g/l. 11. An adhesive according to Claim 10, wherein said thermoplastic resin comprises from about 5 to about 20 weight percent of chlorinated polyvinyl chloride. 12. An adhesive according to Claim 6, wherein one or more said additional solvents comprise from about 10 to about 35 weight percent of one or more poly-carboxylic acids having a total of 4 to 15 carbon atoms, mono- or dialkyl esters thereof, having a total of 4 to 19 carbon atoms, alkyl chlorides of said polycarboxylic acids having a total of 4 to 17 carbon atoms, chloro-anhydrides of said polycarboxylic acids having a total of 4 to 15 carbon atoms or combinations thereof. 13. An adhesive according to Claim 12, wherein said additional one or more solvents comprises from about 25 to about 35 weight percent of said one or more mono- or dialkyl esters of polycarboxylic acids and/or chloro-anhydride of said polycarboxylic acids or combinations thereof. 14. An adhesive according to Claims 1-13, wherein said additional solvent is selected from the group, consisting of the group, comprising heptadioic acid, monomethylglutarate, monomethylpimelate, monomethylazelate, monomethylsebacate, monomethyladipate, dimethylsuccinate, dimethylglutarate, dimethyladipate, dimethylpimelate, dimethylsuberate, dimethylazelate, glutarylchloride, adipoylchloride, pimeloylchloride, and the mixtures thereof. 15. An adhesive according to Claim 3, wherein said one or more ketones consist essentially of ketones having a flash point above 21.1 degree C (70 degree F) as measured by ASTM D 3828-87. 16. An adhesive according to Claim 3, wherein said one or more ketone is chosen from the group consisting of 5-methyl-2-hexanone and 4-methyl-2-pentanone or combinations thereof. 17. An adhesive according to Claim 3, wherein said adhesive comprises from about 10 to about 13.5 weight percent chlorinated polyvinyl chloride. 18. An adhesive according to Claim 17, wherein said at least one alkyl substituted naphthalene and/or alkyl substituted benzene is present in an amount from about 38 to about 65 weight percent. 19. An adhesive according to Claim 12, wherein the volatile organic content by Test Method 316A is below 350 g/l. 20. An adhesive according to Claim 12, wherein the volatile organic content by Test Method 316A is below 250 g/l. 21. An adhesive, which comprises the following components, wt.%: at least one alkyl substituted naphthalene having from 11 to 14 carbon atoms and/or alkyl substituted benzene having at least one alkyl group and from 10 to 14 carbon atoms, - from about 38 to about 70 weight percent; from about 5 to about 20 weight percent of a chlorinated polyvinyl chloride, from about 10 to about 35 weight percent of acids having a total of 4 to 15 carbon atoms, or mono- or dialkyl esters thereof, having in total up to 19 carbon atoms, alkyl chlorides of said polycarboxylic acids having in total up to 17 carbon atoms, chloro-anhydrides of said polycarboxylic acids having a total of 4 to 15 carbon atoms; one or more ketones comprising from about 3 to about 15 carbon atoms - not more than 15; or combinations thereof, said adhesive having a volatile organic content by SCAQMD Test Method 316A of less than 450 g/l. 22. An adhesive according to Claim 21, wherein the volatile organic content by Test Method 316A is below 350 g/l. 23. An adhesive according to Claim 22, wherein the volatile organic content by Test Method 316A is below 250 g/l. 24. An adhesive according to Claim 21, wherein said one or more ketones comprise from about 5 wt.% to about 10 wt.% having a flash point above 21.1 degree C (70 degree F) as measured by ASTM D 3828-87.