公开(公告)号：US3764585A

公开(公告)日：1973-10-09

申请号：US3764585D

申请日：1972-05-03

Applicant: SNIA VISCOSA

Inventor： SICLARI F ,  PERAZZONI P ,  SILVESTRONI P

IPC: C08G69/42 ,  D06P1/62 ,  D06P3/24 ,  C08G9/04 ,  C08G9/24

CPC classification number: D06P3/242 ,  C08G69/42 ,  D06P1/625

Abstract: A method for obtaining synthetic polyamide yarns, more particularly polyamide yarns, is disclosed, which have a high affinity towards basic dyestuffs. The dyeability with basic dyestuffs is improved by adding to the polymerization mass, prior to, or during progress of, polymerization, an aromatic aldehyde having the general formula

WHEREIN M AND N ARE INTEGERS WHICH ARE 1 OR 2, THE GROUP SO3X indicates both a free sulphonic group or such a group salified with a member selected from the group consisting of ammonium ions, alkali metals and alkaline earth metals. Hypophosphorous acid, or an alkali metal salt thereof can also be added to improve the whiteness of the parts of the yarn or fabric which are not to be dyed.

Abstract translation: 公开了一种用于获得合成聚酰胺纱线，更特别是聚酰胺纱线的方法，其对碱性染料具有高亲和力。 碱性染料的染色性通过在聚合过程中加入到聚合物质中，在聚合过程中或在进行聚合过程中改进了通式为M和N为1或2的整数的芳族醛，SO 3 X既表示自由基 磺酸基或这样的基团，其与选自铵离子，碱金属和碱土金属的成员成盐。

公开(公告)号：IN150882B

公开(公告)日：1983-01-08

申请号：IN593CA1979

申请日：1979-06-07

Applicant: SNIA VISCOSA

Inventor： PERAZZONI P ,  BILANCINI L

IPC: C08L77/00 ,  C08K3/16 ,  C08G41/02 ,  C08G51/54

Abstract: A composition for increasing the light and heat stability of polyamides comprises a copper salt bound to a halogen atom and to a hydrosoluble organic compound. The organic compound is able to maintain the CuX compound or its complexes in solution in water up to about 60 DEG C.

公开(公告)号：NO122604B

公开(公告)日：1971-07-19

申请号：NO15243564

申请日：1964-03-14

Applicant: SNIA VISCOSA

Inventor： D ALO B ,  PERAZZONI P ,  BELLANO A ,  CICERI L ,  SICLARI F ,  GIACOBONE P

IPC: D01D1/04 ,  D01D1/06 ,  D01D1/10 ,  D01F6/60

Abstract: 1,019,099. Melt-spinning polyamides. SNIA VISCOSA SOC. NATURALE INDUSTRIA APPLICAZIONI VISCOSA S.p.A. March 10, 1964 [March 15, 1963], No. 10026/64. Heading B5B. In melt-spinning polyamides, the polymer chips, after having been dried, by heating in vacuo, are artificially cooled, or allowed to cool spontaneously, in an atmosphere of inert gas to a temperature not exceeding 50‹ C., and preferably between 25‹ and 30‹ C., before being transferred to the feed hopper of the melt-spinning apparatus, preferably while still surrounded by an atmosphere of the inert gas. The chips may be artificially cooled or allowed to cool spontaneously in the apparatus in which they have been dried in vacuo, a dry inert gas such as dry nitrogen having been introduced into the drying chamber until the interior of the latter is at atmospheric pressure and cold water being circulated through the jacket of the drying chamber (which may be rotated to tumble the chips) until they have been cooled to the desired temperature. Alternatively the chips may be cooled, while they are being mechanically conveyed from the drier to the melt-spinning apparatus, by contacting them with a stream of a cooled dry inert gas such as dry nitrogen. In either case the initial humidity of the inert gas may be so controlled so that it does not exceed a predetermined level, such as 70 milligrams of moisture per cubic metre of gas. In a third method the hot dry chips are discharged from the drying chamber on to a hollow horizontal metallic plate through the interior of which flows a stream of cold water. The plate is enclosed in a chamber through which flows a stream of dry nitrogen and the polymer chips are caused to travel along the entire length of the plate by vibrating the plate. The cooled chips are discharged into a duct through which they are pneumatically conveyed to the melting apparatus by a current of dry nitrogen.

公开(公告)号：IT956228B

公开(公告)日：1973-10-10

申请号：IT2319772

申请日：1972-04-15

Applicant: SNIA VISCOSA

Inventor： SILVESTRONI P ,  SIOLARI F ,  PERAZZONI P

IPC: C08L77/00 ,  C08K

Abstract: An antistatic additive for polyamide compositions and articles is disclosed, which can be concisely defined as a "polyoxyalkylated aminoacid." This class of compounds is preferably prepared by placing the selected aminoacid in the presence of the selected oxyalkylene, in suspension in a liquid medium. The latter is preferably an organic solvent for the polyoxyalkylene, but is a nonsolvent for the aminoacid as such. The polyoxyalkylation is encouraged by the presence of an alkali metal salt of the aminoacid: the sodium salt is preferred. The compounds so prepared have an unpredictably high degree of emulgability towards the polyamides so that a completely satisfactory dispersion of the novel additives in the polyamides can be achieved. Examples of amino-acids are omega-aminododecanoic, omega-aminoundecanoic, epsilon-aminocapronic, (also known as epsilon-aminocaproic) sulphanilic, para-aminobenzoic, 2-aminoethanesulphonic and aminoacetic acids.

公开(公告)号：SE301690B

公开(公告)日：1968-06-17

申请号：SE319764

申请日：1964-03-13

Applicant: SNIA VISCOSA

Inventor： D ALO B ,  PERAZZONI P ,  BELLANO A ,  CICERI L ,  SICLARI F ,  GIACOBONE P

IPC: D01D1/04 ,  D01D1/06 ,  D01D1/10 ,  D01F6/60 ,  D01D1/00

Abstract: 1,019,099. Melt-spinning polyamides. SNIA VISCOSA SOC. NATURALE INDUSTRIA APPLICAZIONI VISCOSA S.p.A. March 10, 1964 [March 15, 1963], No. 10026/64. Heading B5B. In melt-spinning polyamides, the polymer chips, after having been dried, by heating in vacuo, are artificially cooled, or allowed to cool spontaneously, in an atmosphere of inert gas to a temperature not exceeding 50‹ C., and preferably between 25‹ and 30‹ C., before being transferred to the feed hopper of the melt-spinning apparatus, preferably while still surrounded by an atmosphere of the inert gas. The chips may be artificially cooled or allowed to cool spontaneously in the apparatus in which they have been dried in vacuo, a dry inert gas such as dry nitrogen having been introduced into the drying chamber until the interior of the latter is at atmospheric pressure and cold water being circulated through the jacket of the drying chamber (which may be rotated to tumble the chips) until they have been cooled to the desired temperature. Alternatively the chips may be cooled, while they are being mechanically conveyed from the drier to the melt-spinning apparatus, by contacting them with a stream of a cooled dry inert gas such as dry nitrogen. In either case the initial humidity of the inert gas may be so controlled so that it does not exceed a predetermined level, such as 70 milligrams of moisture per cubic metre of gas. In a third method the hot dry chips are discharged from the drying chamber on to a hollow horizontal metallic plate through the interior of which flows a stream of cold water. The plate is enclosed in a chamber through which flows a stream of dry nitrogen and the polymer chips are caused to travel along the entire length of the plate by vibrating the plate. The cooled chips are discharged into a duct through which they are pneumatically conveyed to the melting apparatus by a current of dry nitrogen.