51  5,744,650  52  6.  The  improved  hydroformylation  process  of  claim  S  which  comprises  (i)  reacting  in  at  least  one  reaction  zone  one  or  more  olefinic  unsaturated  compounds  with  carbon  mon- oxide  and  hydrogen  in  the  presence  of  a  metal› organopolyphosphite  ligand  complex  catalyst  and  optionally  $_{free }$organopolyphosphite  ligand  to  produce  a  reaction  prod› uct  fluid  comprising  one  or  more  aldehydes  and  (ii)  sepa› rating  in  at  least  one  separation  zone  or  in  said  at  least  one  reaction  zone  the  one  or  more  aldehydes  from  said  reaction  product  fluid,  wherein  said  reaction  product  fluid  contains  at  least  $_{some }$organomonophosphite  ligand  formed  during  said  hydroformylation  process.  the  improvement  comprising  pre› venting  and/or  lessening  coordination  of  the  organomono- phosphite  ligand  with  said  metal-organopolyphosphite  ligand  complex  catalyst  and  preventing  and/or  lessening  cycling  of  carbon  monoxide  partial  pressure,  hydrogen  par› tial  pressure.  total  reaction  pressure,  hydroformylation  reac› tion  rate  and/or  temperature  during  said  hydroformylation  process  by  conducting  said  hydroformylation  process  at  (a)  a  carbon  monoxide  partial  pressure  such  that  hydroformy› lation  reaction  rate  increases  as  carbon  monoxide  partial  pressure  decreases  and  hydroformylation  reaction  rate  decreases  as  carbon  monoxide  partial  pressure  increases  and  (b)  a  temperature  such  that  the  temperature  difference  between  reaction  product  fluid  temperature  and  inlet  coolant  temperature  is  less  than  about  25°  C.  3.  $_{An }$improved  hydroformylation  process  which  com› prises  (i)  reacting  in  at  least  one  reaction  zone  one  or  more  olefinic  unsaturated  compounds  with  carbon  monoxide  and  hydrogen  in  the  presence  of  $_{a }$metal-organopolyphosphite  ligand  complex  catalyst  and  optionally  free  organopoly› phosphite  ligand  to  produce  a  reaction  product  fluid  com› prising  one  or  more  aldehydes  and  (ii)  separating  in  at  least  one  separation  zone  or  in  said  at  least  one  reaction  zone  the  one  or  more  aldehydes  from  said  reaction  product  fluid.  the  improvement  comprising  preventing  and/or  lessening  deac› tivation  of  $_{the }$metal-organopolyphosphite  ligand  complex  catalyst  and  preventing  and/or  lessening  cycling  of  carbon  monoxide  partial  pressure,  hydrogen  partial  pressure,  total  reaction  pressure,  hydroformylation  reaction  rate  and/or  temperature  during  said  hydroformylation  process  by  con› ducting  said  hydroformylation  process  at  (a)  a  carbon  mon› oxide  partial  pressure  such  that  hydroformylation  reaction  rate  increases  as  carbon  monoxide  partial  pressure  decreases  and  hydroformylation  reaction  rate  decreases  as  carbon  monoxide  partial  pressure  increases  and  (b)  a  temperature  2.  $_{A }$hydroformylation  process  which  comprises  reacting  one  or  more  olefinic  unsaturated  compounds  with  carbon  monoxide  and  hydrogen  in  the  presence  of  a  metal› organopolyphosphite  ligand  complex  catalyst  and  optionally  $_{free }$organopolyphosphite  ligand  to  produce  a  reaction  prod› uct  fluid  comprising  one  or  more  aldehydes,  wherein  said  hydroformylation  process  is  conducted  at  (a)  a  carbon  monoxide  partial  pressure  such  that  hydroformylation  reac› tion  rate  increases  as  carbon  monoxide  partial  pressure  decreases  and  hydroformylation  reaction  rate  decreases  as  carbon  monoxide  partial  pressure  increases  and  which  is  sufficient  to  prevent  and/or  lessen  deactivation  of  the  metal› organopolyphosphite  ligand  complex  catalyst  and  (b)  a  temperature  such  that  the  temperature  difference  between  reaction  product  fluid  temperature  and  inlet  coolant  tem› perature  is  sufficient  to  prevent  and/or  lessen  cycling  of  carbon  monoxide  partial  pressure,  hydrogen  partial  pressure,  total  reaction  pressure,  hydrofonnylation  reaction  rate  and/  or  temperature  during  said  hydroformylation  process.  S.  The  improved  hydroformylation  process  of  claim  3  which  comprises  (i)  reacting  in  at  least  one  reaction  zone  one  or  more  olefinic  unsaturated  compounds  with  carbon  mon› oxide  and  hydrogen  in  the  presence  of  a  metal- organopolyphosphite  ligand  complex  catalyst  and  optionally  $_{free }$organopolyphosphite  ligand  to  produce  a  reaction  prod› uct  fluid  comprising  one  or  more  aldehydes  and  (ii)  sepa› rating  in  at  least  one  separation  zone  or  in  said  at  least  one  reaction  zone  the  one  or  more  aldehydes  from  said  reaction  product  fluid.  wherein  said  reaction  product  fluid  contains  at  least  $_{some }$organomonophosphite  ligand  formed  during  said  hydroformylation  process.  the  improvement  comprising  conducting  said  process  at  (a)  a  carbon  monoxide  partial  pressure  such  that  hydroformylation  reac- tion  rate  increases  as  carbon  monoxide  partial  pressure  decreases  and  hydroformylation  reaction  rate  decreases  as  carbon  monoxide  partial  pressure  increases  and  which  is  sufficient  to  prevent  and/or  lessen  coordination  of  the  orga› n  om  on  op  hosp  hit  e  ligand  with  said  metal- organopolyphosphite  ligand  complex  catalyst  and  (b)  a  temperature  such  that  the  temperature  difference  between  reaction  product  fluid  temperature  and  inlet  coolant  tem› perature  is  sufficient  to  prevent  and/or  lessen  cycling  of  carbon  monoxide  partial  pressure.  hydrogen  partial  pressure.  total  reaction  pressure,  hydroformylation  reaction  rate  and/  or  temperature  during  said  hydroformylation  process.  1.  A  process  which  comprises  reacting  one  or  more  reactants  in  the  presence  of  a  rnetal-organopolyphosphite  ligand  complex  catalyst  and  optionally  free  organopoly› phosphite  ligand  to  produce  a  reaction  product  fluid  com› prising  one  or  more  products,  wherein  said  process  is  conducted  at  (a)  a  carbon  monoxide  partial  pressure  such  that  reaction  rate  increases  as  carbon  monoxide  partial  pressure  decreases  and  reaction  rate  decreases  as  carbon  monoxide  partial  pressure  increases  and  which  is  sufficient  to  prevent  and/or  lessen  deactivation  of  the  metal› organopolyphosphite  ligand  complex  catalyst  and  (b)  a  temperature  such  that  the  temperature  difference  between  reaction  product  fluid  temperature  and  inlet  coolant  tem› perature  is  sufficient  to  prevent  and/or  lessen  cycling  of  carbon  monoxide  partial  pressure,  hydrogen  partial  pressure.  total  reaction  pressure,  reaction  rate  and/or  temperature  during  said  process.  4.  $_{A }$hydroformylation  process  which  comprises  reacting  one  or  more  olefinic  unsaturated  compounds  with  carbon  monoxide  and  hydrogen  in  the  presence  of  a  metal› organopolyphosphite  ligand  complex  catalyst  and  optionally  $_{free }$organopolyphosphite  ligand  to  produce  a  reaction  prod› uct  fluid  comprising  one  or  more  aldehydes.  wherein  said  hydroformylation  process  is  conducted  at  a  carbon  monox› ide  partial  pressure  such  that  hydroformylation  reaction  rate  increases  as  carbon  monoxide  partial  pressure  decreases  and  hydroformylation  reaction  rate  decreases  as  carbon  monox› ide  partial  pressure  increases  and  which  is  sufficient  to  prevent  and/or  lessen  deactivation  of  the  metal- organopolyphosphite  ligand  complex  catalyst.  such  that  the  temperature  difference  between  reaction  prod› uct  fluid  temperature  and  inlet  coolant  temperature  is  less  than  about  25°  C.  Although  the  invention  has  been  illustrated  by  certain  of  the  preceding  examples,  it  is  not  to  be  construed  as  being  limited  thereby;  but  rather,  the  invention  encompasses  the  generic  area  as  hereinbefore  disclosed.  Various  modifica› tions  and  embodiments  can  be  made  without  departing  from  the  spirit  and  scope  thereof.  We  claim:  This  data  shows  that  an  organic  soluble  salt  of  a  weak  base  and  strong  acid  can  be  completely  neutralized  by  contacting  the  organic  phase  with  an  aqueous  buffer  solution  and  that  the  free  base  is  thereby  returned  to  the  organic  phase. 