Claims
- 1. A process for the preparation of natural products composites that are resistant to color change due to microorganism growth, weathering and chemical interaction,
which process comprises combining into a mixture at least one natural product, at least one thermoplastic resin, an effective amount of an antifungal agent, and melt processing the mixture.
- 2. A process for the preparation of natural products composites that are resistant to color change due to microorganism growth, weathering and chemical interaction,
which process comprises combining into a mixture at least one natural product, at least one thermoplastic resin, an effective amount of an antifungal agent, and at least one compound selected from the group consisting of the light stabilizers, and melt processing the mixture.
- 3. A process for the preparation of natural products composites that are resistant to color change due to microorganism growth, weathering and chemical interaction,
which process comprises combining into a mixture at least one natural product, at least one thermoplastic resin, an effective amount of an antifungal agent, and at least one compound selected from the group consisting of the oxides, hydroxides or silicates of Ca, Mg, Al and Zn, and melt processing the mixture.
- 4. A process for the preparation of natural products composites that are resistant to color change due to microorganism growth, weathering and chemical interaction,
which process comprises combining into a mixture at least one natural product, at least one thermoplastic resin, an effective amount of an antifungal agent, and at least one compound selected from the group consisting of the light stabilizers, and at least one compound selected from the group consisting of the oxides, hydroxides or silicates of Ca, Mg, Al and Zn, and melt processing the mixture.
- 5. A process according to claim 1 where the antifungal agent is selected from the group consisting of thiabendazole, 10,10′ oxybisphenoxyarsine, tebuconazole, tolnaftate, zinc bis-(2-pyridinethiol-1-oxide), 2n-octyl-4-isothiazolin-3-one, 4,5-dichloro-octyl-4-isothiazoline, N-butyl-1,2-benzisothiazolin-3-one, carbendazole and mixtures thereof.
- 6. A process according to claim 1 where the antifungal agent is thiabendazole.
- 7. A process according to claim 1 where the antifungal agent is present at a level of from about 0.05% to about 1.0% by weight, based on the weight of the entire mixture.
- 8. A process according to claim 1 where the antifungal agent is present from about 0.1% to about 0.8% by weight, based on the weight of the entire mixture.
- 9. A process according to claim 2 in which the light stabilizers are selected from the group consisting of the ultraviolet light absorbers.
- 10. A process according to claim 9 in which the ultraviolet light absorbers are selected from the group consisting of the 2H-benzotriazoles, benzophenones, benzoic acid esters, acrylates, malonates, oxamides, salicylates, benzoxazin-4-ones and s-triazines.
- 11. A process according to claim 9 in which the ultraviolet light absorbers are selected from the group consisting of the 2H-benzotriazoles, benzophenones and s-triazines.
- 12. A process according to claim 9 in which the ultraviolet light absorbers are selected from the group consisting of
2-(2-hydroxy-5-methylphenyl)-2H-benzotriazole; 2-(2-hydroxy-5-tert-octylphenyl)-2H-benzotriazole; 2-(2-hydroxy-3,5-di-tert-amylphenyl)-2H-benzotriazole; octyl 3-(benzotriazol-2-yl)-5-tert-butyl-4-hydroxyhydrocinnamate; 2-(2-hydroxy-3,5-di-tert-butylphenyl)-2H-benzotriazole; 2-(2-hydroxy-5-tert-butylphenyl)-2H-benzotriazole; 2-(2-hydroxy-3,5-di-tert-butylphenyl)-2H-benzotriazole; 2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-2H-benzotriazole; 2-(2-hydroxy-3-sec-butyl-5-tert-butylphenyl)-2H-benzotriazole; 2-(2-hydroxy-4-octyloxyphenyl)-2H-benzotriazole; 2-(2-hydroxy-3-dodecyl-5-methylphenyl)-2H-benzotriazole; 2-[2-hydroxy-3,5-di(α,α-dimethylbenzyl)phenyl]-2H-benzotriazole; 2-[2-hydroxy-3-(α,α-dimethylbenzyl)-5-tert-octylphenyl]-2H-benzotriazole; 2-{2-hydroxy-3-tert-butyl-5-[2-(omega-hydroxy-octa(ethyleneoxy)carbonyl)ethyl]phenyl}-2H-benzotriazole; 2-{2-hydroxy-3-tert-butyl-5-[2-(octyloxy)carbonyl)ethyl]phenyl}-2H-benzotriazole; 5-trifluoromethyl-2-(2-hydroxy-3-α-cumyl-5-t-octylphenyl)-2H-benzotriazole; 5-chloro-2-(3,5-di-t-butyl-2-hydroxyphenyl)-2H-benzotriazole; 2-(3-t-butyl-2-hydroxy-5-(2-octyloxycarbonylethyl)phenyl)-5-chloro-2H-benzotriazole; 4-octyloxy-2-hydroxybenzophenone; 4-methoxy-2-hydroxybenzophenone; 4-methoxy-2,2′-dihydroxybenzophenone; 4,4′dimethoxy-2,2′-dihydroxybenzophenone; 2,4-bis[2-hydroxy-4-(3-butyloxy-2-hydroxypropoxy)phenyl]-6-mesityl-s-triazine; 2,4-bis(2,4-dimethylphenyl)-6-(2-hydroxy-4-octyloxyphenyl)-s-triazine; 2,4-diphenyl-6-(2-hydroxy-4-hexyloxyphenyl)-s-triazine; 2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxy-4-(3-do-/tri-decyloxy-2-hydroxypropoxy)-phenyl]-s-triazine; 2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxy-4-(3-do-/tri-decyloxy-2-hydroxypropoxy)-5-α-cumylphenyl]-s-triazine; reaction product of 2,4,6-tris(2,4-dihydroxyphenyl)-s-triazine with isooctyl α-halopropionate; 2-(2,4-dibutyloxyphenyl)-4,6-bis(2-hydroxy-4-butyloxyphenyl)-s-triazine; 2,4-bis(4-biphenylyl)-6-(2-hydroxy-4-octyloxycarbonylethylideneoxyphenyl)-s-triazine; 2-phenyl-4-[2-hydroxy-4-(3-sec-butyloxy-2-hydroxypropyloxy)phenyl]-6-[2-hydroxy-4-(3-sec-amyloxy-2-hydroxypropyloxy)phenyl]-s-triazine; 2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxy-4-(3-benzyloxy-2-hydroxypropyloxy)phenyl]-s-triazine; 2,4-bis(2-hydroxy-4-butyloxyphenyl)-6-(2,4-di-butyloxyphenyl)-s-triazine; 2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxy-4-(3-nonyloxy*-2-hydroxypropyloxy)-5-α-cumyl-phenyl]-s-triazine; (* denotes a mixture of octyloxy, nonyloxy and decyloxy groups) methylenebis-{2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxypropoxy)phenyl]-s-triazine}, methylene bridged dimer mixture bridged in the 3:5′, 5:5′ and 3:3′ positions in a 5:4:1 ratio; 2,4,6-tris(2-hydroxy-4-isooctyloxycarbonylisopropylideneoxyphenyl)-s-triazine; 2,4-bis(2,4-dimethylphenyl)-6-(2-hydroxy-4-hexyloxy-5-α-cumylphenyl)-s-triazine; and 2,4,6-tris[2-hydroxy-4-(3-sec-butyloxy-2-hydroxypropyloxy)phenyl]-s-triazine.
- 13. A process according to claim 9 in which the ultraviolet light absorbers are selected from the group consisting of
2-(2-hydroxy-5-tert-octylphenyl)-2H-benzotriazole; 2-[2-hydroxy-3-(α,α-dimethylbenzyl)-5-tert-octylphenyl]-2H-benzotriazole; 2-{2-hydroxy-3-tert-butyl-5-[2-(omega-hydroxy-octa(ethyleneoxy)carbonyl)ethyl]phenyl}-2H-benzotriazole; 2-{2-hydroxy-3-tert-butyl-5-[2-(octyloxy)carbonyl)ethyl]phenyl}-2H-benzotriazole; 4-octyloxy-2-hydroxybenzophenone; 4-methoxy-2-hydroxybenzophenone; 2,4-bis[2-hydroxy-4-(3-butyloxy-2-hydroxypropoxy)phenyl]-6-mesityl-s-triazine; reaction product of 2,4,6-tris(2,4-dihydroxyphenyl)-s-triazine with isooctyl α-halopropionate; 2,4-bis(4-biphenylyl)-6-(2-hydroxy-4-octyloxycarbonylethylideneoxyphenyl)-s-triazine; 2,4-bis(2,4-dimethylphenyl)-6-[2-hydroxy-4-(3-nonyloxy*-2-hydroxypropyloxy)-5-α-cumyl-phenyl]-s-triazine; (* denotes a mixture of octyloxy, nonyloxy and decyloxy groups) and 2,4,6-tris(2-hydroxy-4-isooctyloxycarbonylisopropylideneoxyphenyl)-s-triazine.
- 14. A process according to claim 2 in which the light stabilizers are selected from the group consisting of the sterically hindered amine light stabilizers.
- 15. A process according to claim 14 in which the sterically hindered amine light stabilizers are selected from the group consisting of
bis(2,2,6,6-tetramethylpiperidin-4-yl)sebacate; bis(1,2,2,6,6-pentamethylpiperidin-4-yl)sebacate; di(1,2,2,6,6-pentamethylpiperidin-4-yl) (3,5-di-tert-butyl-4-hydroxybenzyl)butylmalonate; 4-benzoyloxy-2,2,6,6-tetramethylpiperidine; 4-stearyloxy-2,2,6,6-tetramethylpiperidine; tris(2,2,6,6-tetramethylpiperidin-4-yl)nitrilotriacetate; polycondensation product of 2,4-dichloro-6-tert-octylamino-s-triazine and 4,4′-hexamethylenebis(amino-2,2,6,6-tetramethylpiperidine); polycondensation product of 1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid; polycondensation product of 4,4′-hexamethylenebis-(amino-2,2,6,6-tetramethylpiperidine) and 1,2-dibromoethane; tetrakis(2,2,6,6-tetramethylpiperidin-4-yl) 1,2,3,4-butanetetracarboxylate; tetrakis(1,2,2,6,6-pentamethylpiperidin-4-yl) 1,2,3,4-butanetetracarboxylate; polycondensation product of 2,4-dichloro-6-morpholino-s-triazine and 4,4′-hexamethylenebis(amino-2,2,6,6-tetramethylpiperidine); N,N′,N″,N′″-tetrakis[(4,6-bis(butyl-1,2,2,6,6-pentamethylpiperidin-4-yl)-amino-s-triazin-2-yl]-1,10-diamino-4,7-diazadecane; octamethylene bis(2,2,6,6-tetramethylpiperidin-4-carboxylate); N-2,2,6,6-tetramethylpiperidin-4-yl-n-dodecylsuccinimide; N-1,2,2,6,6-pentamethylpiperidin-4-yl-n-dodecylsuccinimide; N-1-acetyl-2,2,6,6-tetramethylpiperidin-4-yln-dodecylsuccinimide; 4-C15-C17alkanoyloxy-2,2,6,6-tetramethylpiperidine; polycondensation product of 2,4-dichloro-6-cyclohexylamino-s-triazine and 4,4′-hexamethylenebis(amino-2,2,6,6-tetramethylpiperidine); 1,5-bis(2,2,6,6-tetramethylpiperidin-4-yl)-1,5-diaza-4-oxopropane; copolymer of methyl methacrylate, ethyl acrylate and 2,2,6,6-tetramethylpiperidin-4-yl acrylate; copolymer of N-octadecylmaleimide, styrene and N-(2,2,6,6-tetramethylpiperidin-4yl)maleimide; 1,3,5-tris[3-(2,2,6,6-piperidin-4-ylamino)-2-hydroxy-propyl)isocyanurate; olefin copolymer containing units derived from N-[2-(2,2,6,6-tetramethylpiperidin-4-yl)-oxalamid-1-yl]maleimide; 2,2,4,4-tetramethyl-7-oxa-3,20-diaza-21-oxo-dispiro[5,1,11,2]heneicosane; C12-C14alkyl 3-(2,2,4,4-tetramethyl-7-oxa-3,20-diaza-21-oxo-dispiro[5,1,11,2]heneicosane-20-yl)propionate; reaction product of epichlorohydrin and 2,2,4,4-tetramethyl-7-oxa-3,20-diaza-21-oxo-dispiro[5,1,11,2]heneicosane; 1,3-di(2,2,6,6-tetramethylpiperidin-4-yl) 2,4-ditridecyl butanetetracarboxylate; 1,3-di(1,2,2,6,6-pentamethylpiperidin-4-yl) 2,4-ditridecyl butanetetracarboxylate; polycondensation product of 3,9-bis(11-dimethyl-2-hydroxyethyl)-2,4,8,10-tetraoxaspiro-[5.5]undecane, tetramethyl 1,2,3,4-butanetetra-carboxylate and 2,2,6,6-tetramethyl-4-hydroxypiperidine; polycondensation product of 3,9-bis(1,1-dimethyl-2-hydroxyethyl)-2,4,8,10-tetraoxaspiro-[5.5]undecane, tetramethyl 1,2,3,4-butanetetra-carboxylate and 1,2,2,6,6-pentamethyl-4-hydroxypiperidine; 1,4-bis(2,2,6,6-tetramethylpiperidin-4-yl)-2,2-dimethyl-1,4-diaza-4-oxopropane; reaction product of 4-amino-2,2,6,6-tetramethylpiperidine and tetramethylolacetylene-diurea; 1,6-hexamethylenebis[N-formyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)amine]; copolymer of N-(2,2,6,6-tetramethylpiperdin-4-yl)maleimide and a C20-C24-alpha-olefin; poly[3-(2,2,6,6-tetramethylpiperidin-4-yloxy)propyl-methyl-siloxane]; polycondensation product of 2,4-dichloro-6-[N-butyl-N-(2,2,6,6-tetramethylpiperidin-4-yl)amino]-s-triazine and 1,10-diamino-4,7-diazadecane; dodecyl 3-(2,2,4,4-tetramethyl-7-oxa-3,20-diaza-21-oxo-dispiro[5,1,11,2]heneicosane-20-yl)propionate; 1-cyclohexyloxy-2,2,6,6-tetramethyl-4-octadecylaminopiperidine; bis(1-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl)sebacate; (2,4-bis[(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl)butylamino]-6-(2-hydroxyethylamino-s-triazine; bis(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl)adipate; 2,4-bis[(1-cyclohexyloxy-2,2,6,6-piperidin-4-yl)butylamino]-6-chloro-s-triazine; 1-(2-hydroxy-2-methylpropoxy)-4-hydroxy-2,2,6,6-tetramethylpiperidine; 1-(2-hydroxy-2-methylpropoxy)-4-oxo-2,2,6,6-tetramethylpiperidine; 1-(2-hydroxy-2-methylpropoxy)-4-octadecanoyloxy-2,2,6,6-tetramethylpiperidine; bis(1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl)sebacate; bis(1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl)adipate; 2,4-bis{N-[1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl]-N-butyl-amino}-6-(2-hydroxyethylamino)-s-triazine; the reaction product of 2,4-bis[(1-cyclohexyloxy-2,2,6,6-piperidin-4-yl)butylamino]-6-chloro-s-triazine with N,N′-bis(3-aminopropyl)ethylenediamine) [CAS Reg. No. 191680-81-6]; and the compound of formula 4in which n is from 1 to 15.
- 16. A process according to claim 14 in which the sterically hindered amine stabilizers are selected from the group consisting of
bis(2,2,6,6-tetramethylpiperidin-4-yl)sebacate; bis(1,2,2,6,6-pentamethylpiperidin-4-yl)sebacate; di(1,2,2,6,6-pentamethylpiperidin-4-yl) (3,5-di-tert-butyl-4-hydroxybenzyl)butylmalonate; polycondensation product of 2,4-dichloro-6-tert-octylamino-s-triazine and 4,4′-hexamethylenebis(amino-2,2,6,6-tetramethylpiperidine); polycondensation product of 1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid; N,N′,N″,N′″-tetrakis[(4,6-bis(butyl-1,2,2,6,6-pentamethylpiperidin-4-yl)-amino-s-triazin-2-yl]-1,10-diamino-4,7-diazadecane; bis(1-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl)sebacate; 2,4-bis[(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl)butylamino]-6-(2-hydroxyethylamino-s-triazine; bis(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl)adipate; 2,4-bis[(1-cyclohexyloxy-2,2,6,6-piperidin-4-yl)butylamino]-6-chloro-s-triazine; 1-(2-hydroxy-2-methylpropoxy)-4-hydroxy-2,2,6,6-tetramethylpiperidine; 1-(2-hydroxy-2-methylpropoxy)-4-oxo-2,2,6,6-tetramethylpiperidine; 1-(2-hydroxy-2-methylpropoxy)-4-octadecanoyloxy-2,2,6,6-tetramethylpiperidine; bis(1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl)sebacate; bis(1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl)adipate; 2,4-bis{N-[1-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethylpiperidin-4-yl]-N-butyl-amino}-6-(2-hydroxyethylamino)-s-triazine; the reaction product of 2,4-bis[(1-cyclohexyloxy-2,2,6,6-piperidin-4-yl)butylamino]-6-chloro-s-triazine with N,N′-bis(3-aminopropyl)ethylenediamine) [CAS Reg. No. 191680-81-6]; and the compound of formula 5in which n is from 1 to 15.
- 17. A process according to claim 2 where the light stabilizers are present at a level of from about 0.1% to about 5% by weight, based on the weight of the entire mixture.
- 18. A process according to claim 2 where the light stabilizers are present at a level of from about 0.2% to about 3% by weight, based on the weight of the entire mixture.
- 19. A process according to claim 3 where the compound selected from the group consisting of the oxides, hydroxides or silicates of Ca, Mg, Al and Zn is hydrotalcite, Al2O3, CaO, MgO or ZnO.
- 20. A process according to claim 3 where the compound selected from the group consisting of the oxides, hydroxides or silicates of Ca, Mg, Al and Zn is CaO.
- 21. A process according to claim 3 where the oxides, hydroxides or silicates of Ca, Mg, Al and Zn are present from about 0.5% to about 10% by weight, based on the weight of the entire mixture.
- 22. A process according to claim 3 where the oxides, hydroxides or silicates of Ca, Mg, Al and Zn are present from about 2% to about 6% by weight, based on the weight of the entire mixture.
- 23. A process according to claim 2 comprising at least two different sterically hindered amine light stabilizers.
- 24. A process according to claim 2 comprising at least one sterically hindered amine light stabilizer and at least one ultraviolet light absorber.
- 25. A process according to claim 1 wherein the natural product is selected from the group consisting of wood, sawdust, coconut shells, sugar cane begasse, flax, hemp, jute, kenaf and rice husk.
- 26. A process according to claim 1 where the thermoplastic resin is selected from the group consisting of polyethylene, polypropylene, engineered thermoplastic polyolefin (TPO), polystyrene, polyvinyl chloride and mixtures thereof.
- 27. A process according to claim 1 where the natural product is wood, kenaf or flax and the thermoplastic resin is polyethylene or polypropylene.
- 28. A process according to claim 1 wherein the antifungal agent is added to the mixture in the form of a carrier resin concentrate.
- 29. A process according to claim 2 wherein the antifungal agent and the light stabilizers are added to the mixture in the form of a carrier resin concentrate.
- 30. A process according to claim 3 wherein the antifungal agent and the oxides, hydroxides or silicates of Ca, Mg, Al and Zn are added to the mixture in the form of a carrier resin concentrate.
- 31. A process according to claim 4 wherein the antifungal agent, the light stabilizers, and the oxides, hydroxides or silicates of Ca, Mg, Al and Zn are added to the mixture in the form of a carrier resin concentrate.
- 32. A process according to claim 28 in which the carrier resin is different than the thermoplastic resin.
- 33. A process according to claim 28 in which the carrier resin is different than the thermoplastic resin and is PET, a PET copolymer or PETG.
- 34. A process according to claim 29 in which the carrier resin is different than the thermoplastic resin.
- 35. A process according to claim 29 in which the carrier resin is different than the thermoplastic resin and is PET, a PET copolymer or PETG.
- 36. A process according to claim 30 in which the carrier resin is different than the thermoplastic resin.
- 37. A process according to claim 30 in which the carrier resin is different than the thermoplastic resin and is PET, a PET copolymer or PETG.
- 38. A process according to claim 31 in which the carrier resin is different than the thermoplastic resin.
- 39. A process according to claim 31 in which the carrier resin is different than the thermoplastic resin and is PET, a PET copolymer or PETG.
Parent Case Info
[0001] This application claims the benefit under 35 USC 119(e) of U.S. provisional app. No. 60/464,797, filed Apr. 23, 2003.
Provisional Applications (1)
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Number |
Date |
Country |
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60464797 |
Apr 2003 |
US |