公开(公告)号：US3925413A

公开(公告)日：1975-12-09

申请号：US40206573

申请日：1973-10-01

Applicant: SNAM PROGETTI

Inventor： KOCH PAOLO ,  PERROTTI EMILIO

IPC: C07D327/00 ,  B01J31/20 ,  C07B61/00 ,  C07C20060101 ,  C07C329/06 ,  C07D20060101 ,  C07D327/02 ,  C07D327/04 ,  C07D327/06

CPC classification number: C07D327/04 ,  C07D327/06

Abstract: The present invention relates to the production of cyclic thiocarbonates by reacting a thioglycol or a hydroxydisulphide with carbon oxide in presence of transition metals or transition metal compounds. The thiocarbonates are very important products from a practical point of view since some of them are precursors of the alkylene sulphides or episulphides which are widely employed in the production of polymers with peculiar properties.

Abstract translation: 本发明涉及通过在过渡金属或过渡金属化合物的存在下使巯基乙醇或羟基二硫化物与碳氧化物反应制备环状硫代碳酸酯。 从实用的角度来看，硫代碳酸酯是非常重要的产物，因为它们中的一些是在生产具有特殊性质的聚合物中被广泛使用的亚烷基硫化物或硫化物的前体。

公开(公告)号：US3901939A

公开(公告)日：1975-08-26

申请号：US40079173

申请日：1973-09-26

Applicant: SNAM PROGETTI

Inventor： NERI CARLO ,  PERROTTI EMILIO

IPC: C07C45/72 ,  C07C120/00 ,  C07C47/02 ,  C07C49/04 ,  C07C76/02

CPC classification number: C07C45/72 ,  C07C49/12

Abstract: A process for preparing dimerization products having the formula X - (A)2 - X in which A is a divalent radical such as -CH2and X is a functional group such as -NO2, wherein a trivalent cobalt insertion product represented by the formula:

WHEREIN L1L2, L3 and L4 may belong to the same ligand molecule, e.g., a planar tetradentate ligand such as bis-(diacetylmonoximeimino)-propane, or to two molecules or a bidentate ligand such as o-phenanthroline, or may be four monodentate ligands and A and X have a significance given above, is pyrolized in an inert atmosphere.

公开(公告)号：US3885024A

公开(公告)日：1975-05-20

申请号：US36205273

申请日：1973-05-21

Applicant: SNAM PROGETTI

Inventor： KOCH PAOLO ,  PERROTTI EMILIO

IPC: C01B17/98 ,  B01J31/00 ,  B01J31/22 ,  C01B17/96

CPC classification number: C01B17/965

Abstract: A pyrosulfate of ammonium or an alkali metal is prepared by reacting the hydroxide of ammonium or the alkali metal with sulfurous oxide in an alcohol, such as isopropyl alcohol, which is liquid under the reaction conditions and has more than three carbon atoms, in the presence of oxygen, at atmospheric pressure and room temperature, through the use, as catalyst, of a compound of a transition metal (e.g., Cu Cl2).

Abstract translation: 铵或碱金属的焦硫酸盐是通过使铵或碱金属的氢氧化物与二氧化硫在醇（如反应条件下为液态的异丙醇）中反应而制备的，并且具有三个以上的碳原子 的氧气，在大气压和室温下，通过使用过渡金属化合物（例如CuCl 2）作为催化剂。