Stabilizer and inhibitor for chloropropenes, such as tetrachloropropene 1,1,2,3-tetrachloropropene (1230xa), used in the manufacture of 2,3,3,3-tetrafluoropropene (1234yf)
View Patent ↗The present invention relates in part to a container for stabilized chloropropenes, such as 1,1,2,3-tetrachloropropene, otherwise known to decompose and degrade, and to the resulting stabilized chloropropene, using a morpholine compound and/or a trialkyl phosphate compound as defined herein. Such stabilized chloropropenes are useful in the manufacture of hydrofluoroolefins such as 2,3,3,3-tetrafluoroprop-1-ene (1234yf).
1. A container within which is comprised a composition comprising a chloropropene and at least one stabilizer compound selected from (i) or (ii) and combinations thereof:
(i) a morpholine compound having the formula:
wherein R is H or C 1 -C 6 alkyl,
(ii) a trialkyl phosphate compound having the formula R′ 3 PO 4 ,
wherein R′ is a C 1 -C 6 alkyl;
the container is metal and the metal is selected from the group consisting of steel, low alloy steel, high alloy steel, nickel alloy.
2. The container of claim 1 wherein the container is comprised of carbon steel, SS304, SS316, AL6XN, Inconel™ 600, Inconel™ 625, Incoloy™ 800, Incoloy™ 825, Monel™ 400, Hastelloy™ C-276, and Alloy 20.
3. The container of claim 1 wherein said stabilizer compound is present in a stabilizingly effective amount.
4. The container of claim 3 wherein said stabilizer compound is present in said composition in an amount of about 5 ppm to about 1000 ppm by weight of said chloropropene.
5. The container of claim 1 wherein said chloropropene is a tetrachloropropene.
6. The container of claim 5 wherein said tetrachloropropene is 1,1,2,3-tetrachloropropene.
7. The container of claim 1 wherein R is H or C 1 -C 3 alkyl.
8. The container of claim 7 wherein R is C 1 alkyl or H.
9. The container of claim 1 wherein R′ is a C 2 -C 4 alkyl.
10. The container of claim 9 wherein R′ is a C 4 alkyl.