公开(公告)号：US3293696A

公开(公告)日：1966-12-27

申请号：US37954564

申请日：1964-07-01

Applicant: SNIA VISCOSA

Inventor： GAETANO BRUNI

IPC: D01D4/02 ,  D01D5/08

CPC classification number: D01D4/02 ,  D01D5/08

公开(公告)号：US3086050A

公开(公告)日：1963-04-16

申请号：US12261061

申请日：1961-07-10

Applicant: SNIA VISCOSA

Inventor： LUIGI NOTARBARTOLO ,  ALBERTO PASIN

IPC: C07D317/38 ,  D01F6/18

CPC classification number: C07D317/38 ,  D01F13/04 ,  Y02P70/629

公开(公告)号：US3017394A

公开(公告)日：1962-01-16

申请号：US75712658

申请日：1958-08-25

Applicant: SNIA VISCOSA

Inventor： WERNER MUENCH ,  CESANO MADERNO ,  LUIGI NOTARBARTOLO ,  GIUSEPPE MESSINA

IPC: C08G69/28

CPC classification number: C08G69/28

公开(公告)号：US2908666A

公开(公告)日：1959-10-13

申请号：US62909456

申请日：1956-12-18

Applicant: SNIA VISCOSA

Inventor： LUIGI NOTARBARTOLO

IPC: C08G69/04

CPC classification number: C08G69/04

公开(公告)号：US2904579A

公开(公告)日：1959-09-15

申请号：US57189756

申请日：1956-03-16

Applicant: SNIA VISCOSA

Inventor： WERNER MUENCH ,  ENZO RUOTI ,  CESANO MADERNO ,  GIULIANA SILVESTRI

IPC: C07C255/49

CPC classification number: C07C255/49

公开(公告)号：US2261754A

公开(公告)日：1941-11-04

申请号：US20448038

申请日：1938-04-26

Applicant: SNIA VISCOSA

Inventor： GIUSEPPE DONAGEMMA ,  PIERO DONAGEMMA

IPC: C08L1/24 ,  D01F1/02 ,  D01F4/00

CPC classification number: D01F4/00 ,  C08L1/24 ,  D01F1/02 ,  C08L2666/02

公开(公告)号：US3924984A

公开(公告)日：1975-12-09

申请号：US45372174

申请日：1974-03-22

Applicant: SNIA VISCOSA

Inventor： GIACOBAZZI VALERIANO

IPC: D01D5/06 ,  D01D10/04 ,  D01D9/08

CPC classification number: D01D10/0481 ,  D01D5/06 ,  D01D10/0454

Abstract: A machine for the continuous spinning and treatment of viscose rayon filaments and yarns, comprises means for extruding the filaments, a coagulating bath, filament stretching means and filament progressing means for continuously treating, washing and drying the filaments to obtain a completely treated yarn, as well as means for physically separating the treatment space from the exterior environment.

公开(公告)号：US3856833A

公开(公告)日：1974-12-24

申请号：US22726872

申请日：1972-02-17

Applicant: SNIA VISCOSA

Inventor： SICLARI F ,  ROSSI P

IPC: C07C45/40 ,  C07C51/34 ,  C07C227/08 ,  C07D323/02 ,  C08H17/36

CPC classification number: C07D323/02 ,  C07C45/40 ,  C07C51/34 ,  C07C227/08 ,  C07C59/153 ,  C07C59/147

Abstract: A method is disclosed which permits obtaining bifunctional chemical compounds, such as acidic aldehydes from ozonides of olefins, the improvement consisting in that the peroxidic derivatives of the ozonides in question are subjected to transposition in a polar solvent and in the presence of a catalyst. The catalyst is preferably a basic substance such as an alkali metal salt or an alkali metal alcoholate, or also an organic base. The catalytic system may also comprise an organic acid anhydride, provided that it is soluble in the polar solvent aforesaid but cannot react therewith.

Abstract translation: 公开了一种方法，其可以获得双官能化学化合物，例如来自烯烃的臭氧化物的酸性醛，改进之处在于所述臭氧化物的过氧化物衍生物在极性溶剂中和在催化剂存在下进行转置。 催化剂优选为碱金属盐如碱金属盐或碱金属醇盐，也可为有机碱。 催化体系还可以包含有机酸酐，条件是其可溶于上述极性溶剂，但不能与其反应。

公开(公告)号：US3781213A

公开(公告)日：1973-12-25

申请号：US3781213D

申请日：1971-10-20

Applicant: SNIA VISCOSA

Inventor： SICLARI F ,  MAGNONI F ,  MORANDI B

IPC: B01F3/12 ,  C08G63/78 ,  C09K3/00

CPC classification number: C08G63/785 ,  Y02P20/582

Abstract: A METHOD AND AN APPARATUS ARE DISCLOSED FOR PREPARING PHTHALIC ACID-GLYCOL MIXTURES FOR ESTERIFICATION. A PROBLEM WHICH IS FREQUENTLY ENCOUNTERED IN PREPARING SUCH PASTE IS THE RETENTION OF THE HOMOGENEOUSNESS OF THEIR COM POSITION, ESPECIALLY IN CONTINUOUS ESTERIFICATION INSTALLATIONS. CONTRARY TO WIDELY ACCEPTED AND WELL ESTABILSIHED TECHNICAL VIEWS, IT HAS BEEN DISCOVERED THAT, BY KEEPING THE MIXTURES OR PASTES AT A COMPARATIVELY LOW TEMPERATURE, THE PREFERRED RANGE BEING BETWEEN 35*C. AND 20* C. THE PROBLEMS INDICATED ABOVE, AND OTHERS CONNECTED THEREWITH, ARE HAPPILY SOLVED AND THE UNDESIRABLE FORMATION OF LUMPS AND INCRUSTATIONS IS EFFETIELY PREVENTED.

公开(公告)号：US3757077A

公开(公告)日：1973-09-04

申请号：US3757077D

申请日：1971-03-22

Applicant: SNIA VISCOSA

Inventor： SICLARI F ,  MAGNONI F ,  BIANUCCI G

IPC: B23K26/14 ,  D01G1/02 ,  B23K27/00

CPC classification number: D01G1/025 ,  B23K26/1462

Abstract: A method and equipment for cutting slivers of continuous filaments of textile material into tuft fibres adapted for further spinning and twisting operations, wherein a continuous sliver formed by said filaments is advanced at a high speed in a plane and laser ray pulses are focalized on said plane in the form of a narrow window having a length greater than the width of said sliver, in order to cut the same into a plurality of tuft fibres having a predetermined length.