1. A process for the manufacture of \u03b1,\u03b1-branched carboxylic acid vinyl esters comprising:
converting a propylene oligomer olefin feed with CO and water under Koch reaction conditions and wherein the propylene oligomer olefin feed has an isomer ratio of (BR1+BR2)BR3=Ya above 20, with BR1=weight of propylene oligomer olefin with one branching alkyl group, BR2=weight of propylene oligomer olefin with two branching alkyl groups and BR3=weight of propylene oligomer olefin with three or more branching alkyl groups to make an acid with a ratio of Non Blocking isomers (NB) versus Blocking isomers (B) of NBB above 1.5, where the \u03b1 carbon atom is always quaternary, the carbon atom(s) in \u03b2 position can either be secondary, tertiary, or quaternary, acids with a tertiary or a quaternary carbon atoms in the \u03b2 position are defined as blocking isomers,
converting the resulting acids into vinyl esters.
2. The process of claim 1 wherein the propylene olefin feed is mainly a trimer of propylene or mainly a tetramer of propylene.
3. The process of claim 1 wherein the resulting acid is reacted with acetylene in presence of a zinc catalyst.
4. The process of claim 3 wherein the propylene oligomer is mainly a trimer of propylene with Ya composition and wherein the resulting acids are reacted with acetylene in presence of a zinc salt to produce vinyl esters of branched carboxylic acids with a copolymer Tg of 26.5\xb0 C. or lower.
5. A copolymer comprising of the vinyl esters produced according to claim 1.
6. A process for the manufacture of \u03b1,\u03b1-branched carboxylic acids comprising:
converting a propylene oligomer olefin feed with CO and water under Koch reaction conditions and wherein the propylene oligomer olefin feed has an isomer ratio of (BR1+BR2)BR3=Ya above 20, with BR1=weight of propylene oligomer olefin with one branching alkyl group, BR2=weight of propylene oligomer olefin with two branching alkyl groups and BR3=weight of propylene oligomer olefin with three or more branching alkyl groups to make an acid with a ratio of Non Blocking isomers (NB) versus Blocking isomers (B) of NBB above 1.5, where the \u03b1 carbon atom is always quaternary, the carbon atom(s) in \u03b2 position can either be secondary, tertiary, or quaternary, acids with a tertiary or a quaternary carbon atoms in the \u03b2 position are defined as blocking isomers.
7. The process of any one of claim 1, wherein the resulting acid is reacted with acetylene in presence of a zinc catalyst with a throughput of the reaction of at least 5.3 tonhour.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A bioreactor comprising:
a culture drum in which microorganisms are cultured;
a supplier for supplying a culture solution, and organic and inorganic media to the culture drum, the supplier including a supply tube connected to an upper side of the culture drum, and a pump connected to the supply tube for supplying the culture solution to the culture drum;
an agitator for agitating the culture solution by spraying air to the culture solution in the culture drum, the air being supplied from an air blower, wherein the sprayed air provides a controlled circulation pattern for the culture solution; and
a thermostatic controller for controlling a temperature of the culture solution and disinfecting the interior of the culture drum, the thermostatic controller including at least a heater provided in the culture drum, and a heater controller;
wherein the agitator includes an air supply hose which is vertically provided along the sidewall of the culture drum and connected to the air blower; two branch lines which are extended from the air supply hose to the inside of the culture drum through the sidewall of the culture drum; an upper and a lower ring-shaped injection pipe which are provided at the end of the branch lines; a first group of injection nozzles which are located at the outer surface of the upper injection pipe, and are extended from the outward direction to the downward direction along the outer circumference of the ring-shaped injection pipe; and a second group of injection nozzles which are located at the outer surface of the lower injection pipe, and are extended from the inward direction to the upward direction along the outer circumference of the ring-shaped injection pipe.
2. The bioreactor of claim 1, wherein a heat shield material is attached to the outer surface of the culture drum.
3. The bioreactor of claim 1, wherein the thermostatic controller includes a low temperature heater for effecting a temperature condition needed for culturing by being heated to less than 60\xb0 C., and a high temperature heater for disinfecting the culture solution by being heated to more than 60\xb0 C.
4. The bioreactor of claim 2, wherein the heat shield material is polyurethane.
5. The bioreactor of claim 1, wherein the controlled circulation pattern includes the rising of the culture solution in the center of the culture drum and lowering of the culture solution near the walls of the culture drum.