RO86220B - Process for obtaining some film filaments made of acrylo-nitrile polymers - Google Patents

Process for obtaining some film filaments made of acrylo-nitrile polymers

Info

Publication number
RO86220B
RO86220B RO72514A RO7251472A RO86220B RO 86220 B RO86220 B RO 86220B RO 72514 A RO72514 A RO 72514A RO 7251472 A RO7251472 A RO 7251472A RO 86220 B RO86220 B RO 86220B
Authority
RO
Romania
Prior art keywords
hydrate
water
amount
obtaining
nitrile groups
Prior art date
Application number
RO72514A
Other languages
Romanian (ro)
Other versions
RO86220A (en
Inventor
Robert A. Blickenstaff
Original Assignee
Ei Du Pont De Nemours And Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ei Du Pont De Nemours And Co filed Critical Ei Du Pont De Nemours And Co
Publication of RO86220A publication Critical patent/RO86220A/en
Publication of RO86220B publication Critical patent/RO86220B/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/18—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/38—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising unsaturated nitriles as the major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92514—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Filaments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Multicomponent Fibers (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

Inventia se refera la un procedeu de obtinere a unor filamente, filme din polimeri acrilonitrilici si se adauga apa la un polimer acrilo-nitrilic care contine cel putin 40% în greitate unitati de nitril acrilic, într-o cantitate echivalenta cu un minimum fie de 45% din cantitatea necesara pentru hidratarea tuturor grupelor nitrilice, fie de 80% din cantitatea necesara pentru hidratarea grupelor nitrilice cuplate într-un raport de 1 : 1 molecula de apa/gruparea nitril, luîndu-se cantitatea cea mai mare din aceste doua, si ca un maximum cantitatea de apa ce se combina cu hidrat plus 7% în greutate în raport cu polimerul, cantitatea totala de apa netrebuind sa depaseasca cantitatea necesara pentru hidratarea tuturor grupelor nitrilice din polimer, dupa care se încalzeste compozitia cel putin sub presiunea de echilibru si cel putin la temperatura de hidratare Tn se extinde sub presiune printr-un orificiu de extrudere la o temperatura cu 25 degree C mai mica pîna la 10 degree C mai mare decît temperatura de hidratare Tn pentru a obtine produsul extrudat si format.The invention relates to a process for obtaining filaments, films of acrylonitrile polymers, and water is added to an acrylonitrile polymer containing at least 40% by weight of acrylate units in an amount equivalent to a minimum of either 45 % of the amount required to hydrate all nitrile groups, either 80% of the amount required to hydrate the coupled nitrile groups in a 1: 1 water / nitrile group, taking the largest of these two, and that a maximum amount of water combined with the hydrate plus 7% by weight relative to the polymer, the total amount of water not exceeding the amount required to hydrate all the nitrile groups in the polymer, then heating the composition to at least the equilibrium pressure and the at a low hydration temperature, is expanded under pressure through an extrusion port at a temperature of 25 ° C to less than 10 ° C higher than the hydration temperature Tn to obtain the extruded and formed product.

RO72514A 1971-10-14 1972-10-14 Process for obtaining some film filaments made of acrylo-nitrile polymers RO86220B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18920271A 1971-10-14 1971-10-14

Publications (2)

Publication Number Publication Date
RO86220A RO86220A (en) 1985-03-15
RO86220B true RO86220B (en) 1985-03-31

Family

ID=22696359

Family Applications (1)

Application Number Title Priority Date Filing Date
RO72514A RO86220B (en) 1971-10-14 1972-10-14 Process for obtaining some film filaments made of acrylo-nitrile polymers

Country Status (21)

Country Link
JP (1) JPS5442023B2 (en)
AR (1) AR198797A1 (en)
AU (1) AU4775772A (en)
BE (1) BE790107A (en)
BR (1) BR7207167D0 (en)
CA (1) CA1034328A (en)
CH (1) CH540306A (en)
DE (1) DE2248244B2 (en)
ES (1) ES407614A1 (en)
FR (1) FR2156337B1 (en)
GB (2) GB1414651A (en)
IE (2) IE36757B1 (en)
IL (1) IL40560A0 (en)
IN (1) IN139404B (en)
LU (1) LU66301A1 (en)
NL (1) NL164910C (en)
OA (1) OA04203A (en)
PL (1) PL74841B1 (en)
RO (1) RO86220B (en)
TR (1) TR17873A (en)
ZA (1) ZA727281B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL43990A (en) * 1973-02-05 1976-08-31 American Cyanamid Co Method of spining fiber using a fusion-melt polymer composition
US3873508A (en) * 1973-12-27 1975-03-25 Du Pont Preparation of acrylonitrile polymer
US4238442A (en) * 1978-12-29 1980-12-09 E. I. Du Pont De Nemours And Company Process for melt spinning acrylonitrile polymer hydrates
DE19959532C1 (en) * 1999-12-10 2001-10-04 Seitz Schenk Filtersystems Gmb Method and device for the production of filtration-active fibers
GB2370248A (en) * 1999-12-10 2002-06-26 Seitzschenk Filtersystems Gmbh Production of filtration-active fibres

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2585499A (en) * 1948-07-29 1952-02-12 Du Pont Production of shaped articles from acrylonitrile polymers
US2585444A (en) * 1948-07-29 1952-02-12 Du Pont Preparation of shaped articles from acrylonitrile polymers
US3402231A (en) * 1964-05-21 1968-09-17 Monsanto Co Process for preparing synthetic fibers for paper products
US3388202A (en) * 1965-09-27 1968-06-11 Monsanto Co Method for melting acrylonitrile polymers and copolymers
US3354856A (en) * 1966-03-16 1967-11-28 Joseph R Annibale Submerged object lifting device
US3896204A (en) * 1972-10-02 1975-07-22 Du Pont Melt-extrusion of acrylonitrile polymers into filaments
US3873508A (en) * 1973-12-27 1975-03-25 Du Pont Preparation of acrylonitrile polymer

Also Published As

Publication number Publication date
AR198797A1 (en) 1974-07-24
NL164910C (en) 1981-02-16
FR2156337B1 (en) 1977-04-01
PL74841B1 (en) 1974-12-31
NL164910B (en) 1980-09-15
JPS4849839A (en) 1973-07-13
CH540306A (en) 1973-08-15
IN139404B (en) 1976-06-12
IE36757L (en) 1973-04-14
DE2248244B2 (en) 1978-12-14
JPS5442023B2 (en) 1979-12-12
TR17873A (en) 1976-09-01
GB1414652A (en) 1975-11-19
ES407614A1 (en) 1975-10-01
IE36757B1 (en) 1977-02-16
RO86220A (en) 1985-03-15
DE2248244A1 (en) 1973-04-19
OA04203A (en) 1979-12-31
BE790107A (en) 1973-04-13
CA1034328A (en) 1978-07-11
NL7213907A (en) 1973-04-17
IE36758B1 (en) 1977-02-16
IL40560A0 (en) 1972-12-29
ZA727281B (en) 1973-08-29
LU66301A1 (en) 1973-01-23
BR7207167D0 (en) 1973-07-26
FR2156337A1 (en) 1973-05-25
AU4775772A (en) 1974-04-26
GB1414651A (en) 1975-11-19

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