Compositions for controlled release of active ingredients and methods of making same

Abstract

Compositions for controlled release of active ingredients and methods of making same are generally provided. In some embodiments, the composition comprises an active ingredient and a delivery material. In some embodiments, the composition comprises a volatile or gaseous active ingredient useful for applications in at least one of agriculture, pest control, odor control, and food preservation. In some embodiments, the active ingredient is a cyclopropene. In some embodiments, the active ingredient is an essential oil, a terpene, or a terpenoid. In some embodiments, the delivery material is a carbon material or a silicate material.

1 - 150 . (canceled) 
     
     
         151 . A composition, comprising:
 a cyclopropene; and   a delivery material comprising a carbon material, wherein the delivery material is configured to release the cyclopropene, and wherein the delivery material has:
 a density in the range of 0.05-3 g/cm 3 ; 
 a pore volume in the range of 0.1-10 cm 3 /g; 
 a surface area in the range of 1-4000 m 2 /g; 
 a moisture content in the range of 0-50%; and 
 an iodine number in the range of 0-1500 mg/g. 
   
     
     
         152 . The composition of  claim 151 , wherein the cyclopropene is 1-methylcyclopropene. 
     
     
         153 . The composition of  claim 151 , wherein the carbon material comprises activated carbon. 
     
     
         154 . The composition of  claim 153 , wherein the cyclopropene is 1-methylcyclopropene. 
     
     
         155 . The composition of  claim 151 , wherein the cyclopropene is present in the delivery material. 
     
     
         156 . The composition of  claim 151 , wherein the delivery material has a density in the range of 0.1-3 g/cm 3 . 
     
     
         157 . The composition of  claim 151 , wherein delivery material has a pore volume in the range of 0.1-1.5 cm 3 /g. 
     
     
         158 . The composition of  claim 151 , wherein delivery material has a surface area in the range of 500-4000 m 2 /g. 
     
     
         159 . The composition of  claim 151 , wherein delivery material has a surface area in the range of 1-1500 m 2 /g. 
     
     
         160 . The composition of  claim 151 , wherein delivery material has a surface area in the range of 100-1500 m 2 /g. 
     
     
         161 . The composition of  claim 151 , wherein the delivery material has a moisture content in the range of 0-30%. 
     
     
         162 . The composition of  claim 151 , wherein the delivery material has a density in the range of 0.1-3 g/cm 3 ; a pore volume in the range of 0.1-1.5 cm 3 /g; a surface area in the range of 500-4000 m 2 /g; moisture content in the range of 0-30%; and an iodine number in the range of 0-1500 mg/g. 
     
     
         163 . The composition of  claim 151 , wherein the delivery material has an iodine number in the range of 500-1500 mg/g. 
     
     
         164 . The composition of  claim 151 , wherein the cyclopropene is present in the composition in an amount of at least 0.01 wt % versus the total weight of the delivery material and the cyclopropene. 
     
     
         165 . The composition of  claim 151 , wherein the composition is configured to release the ethylene inhibitor at a temperature in a range of 0° C. to 40° C. 
     
     
         166 . A method, comprising:
 releasing a cyclopropene from a delivery material, wherein the delivery material comprises a carbon material, and wherein the delivery material has:
 a density in the range of 0.05-3 g/cm 3 ; 
 a pore volume in the range of 0.1-10 cm 3 /g; 
 a surface area in the range of 1-4000 m 2 /g; 
 a moisture content in the range of 0-50%; and 
 an iodine number in the range of 0-1500 mg/g. 
   
     
     
         167 . The method of  claim 166 , wherein the cyclopropene is 1-methylcyclopropene. 
     
     
         168 . The method of  claim 166 , wherein the carbon material comprises activated carbon. 
     
     
         169 . The method of  claim 168 , wherein the cyclopropene is 1-methylcyclopropene. 
     
     
         170 . The method of  claim 166 , wherein the cyclopropene is present in the delivery material. 
     
     
         171 . The method of  claim 166 , wherein the delivery material has a density in the range of 0.1-3 g/cm 3 . 
     
     
         172 . The method of  claim 166 , wherein delivery material has a pore volume in the range of 0.1-1.5 cm 3 /g. 
     
     
         173 . The method of  claim 166 , wherein delivery material has a surface area in the range of 500-4000 m 2 /g. 
     
     
         174 . The method of  claim 166 , wherein delivery material has a surface area in the range of 1-1500 m 2 /g. 
     
     
         175 . The method of  claim 166 , wherein delivery material has a surface area in the range of 100-1500 m 2 /g. 
     
     
         176 . The method of  claim 166 , wherein the delivery material has a moisture content in the range of 0-30%. 
     
     
         177 . The method of  claim 166 , wherein the delivery material has a density in the range of 0.1-3 g/cm 3 ; a pore volume in the range of 0.1-1.5 cm 3 /g; a surface area in the range of 500-4000 m 2 /g; moisture content in the range of 0-30%; and an iodine number in the range of 0-1500 mg/g. 
     
     
         178 . The method of  claim 166 , wherein the delivery material has an iodine number in the range of 500-1500 mg/g. 
     
     
         179 . The method of  claim 166 , wherein the cyclopropene is present in the delivery material in an amount of at least 0.01 wt % versus the total weight of the delivery material and the cyclopropene. 
     
     
         180 . The method of  claim 166 , wherein the releasing the cyclopropene is performed at a temperature in a range of 0° C. to 40° C. 
     
     
         181 . The method of  claim 166 , wherein the releasing the cyclopropene is performed over a period of between 5 days to 30 days. 
     
     
         182 . The method of  claim 166 , wherein produce is exposed to the released cyclopropene in the gaseous or vapor phase.