GB931417A - Spinning of polypropylene - Google Patents

Spinning of polypropylene

Info

Publication number
GB931417A
GB931417A GB11303/61A GB1130361A GB931417A GB 931417 A GB931417 A GB 931417A GB 11303/61 A GB11303/61 A GB 11303/61A GB 1130361 A GB1130361 A GB 1130361A GB 931417 A GB931417 A GB 931417A
Authority
GB
United Kingdom
Prior art keywords
sulphur
monosulphides
thio
bis
tert
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB11303/61A
Inventor
John Francis Lloyd Roberts
Eric Walker
Gerald Scott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to US180019A priority Critical patent/US3143584A/en
Priority to DE19621469089 priority patent/DE1469089A1/en
Publication of GB931417A publication Critical patent/GB931417A/en
Expired legal-status Critical Current

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
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/50—Partial depolymerisation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2810/00—Chemical modification of a polymer
    • C08F2810/10—Chemical modification of a polymer including a reactive processing step which leads, inter alia, to morphological and/or rheological modifications, e.g. visbreaking

Abstract

The process of the parent Specification is modified in that before the extrusion of filaments the isotactic polypropylene is subjected to thermal degradation by admixture with a sulphur compound which gives rise to thiyl radicals, e.g. thiphenols, mercaptans, thioureas, thioacids and the salts thereof, disulphides and polysulphides. Compounds specified include thio-b -naphthol, pentachlorothiophenol, 4,41-thio-bis(3-methyl-6-tert. butyl phenol), 2,21-thio-bis(3-methyl-6-tert. butyl phenol), 4,41-thio-bis(2-methyl-5-tert. butyl phenol), 2,21-thio-bis(6-methyl-3,5-tert. butyl phenol), dodecylmercaptan, mercaptobenzimidazole, dinonyldithiophosphoric acid and its salts, mercaptobenzthiazole bisulphide, di-isopropyldithiophosphoryl disulphide, diphenyl disulphide, di-obenzamidodiphenyldisulphide, 2,21-bis(N-phenylbenzamido) phenyl disulphide, diaroyl disulphides, diaroyl polysulphides and amine polysulphides, e.g. 4:41-dithiomorpholine and sulphur compounds having weak bonds between sulphur and another atom, e.g. dialkyl monosulphides, diaryl monosulphides, diaralkyl monosulphides, diacyl monosulphides, thio phosphoryl monosulphides, dithiocarbamoyl monosulphides, benzthiazole sulphenamides, diphosphoryl sulphenamides, tetramethylthiur-ammonosulphide and alkyl thioamines. The sulphur compound may also protect the polypropylene against the action of light, weathering, oxidation and heat up to about 150 DEG C., and may be used in association with a sulphur-free compound having a stabilizing action alone or providing a synergistic action with the sulphur compound. Preferably, less than 2% (by weight of the polypropylene) of the sulphur compound is used. The sulphur-free compound may be an ultra-violet light absorber (e.g. carbon black), an antioxidant, a free-radical inhibitor or a metal-ion inhibitor.
GB11303/61A 1959-05-12 1961-03-28 Spinning of polypropylene Expired GB931417A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US180019A US3143584A (en) 1959-05-12 1962-03-15 Spinning polypropylenes which have been subjected to thermal degradation promoted bythe presence of sulfur compounds
DE19621469089 DE1469089A1 (en) 1961-03-28 1962-03-22 Process for spinning polypropylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16274/59A GB875108A (en) 1959-05-12 1959-05-12 Spinning of polypropylene

Publications (1)

Publication Number Publication Date
GB931417A true GB931417A (en) 1963-07-17

Family

ID=10074362

Family Applications (2)

Application Number Title Priority Date Filing Date
GB16274/59A Expired GB875108A (en) 1959-05-12 1959-05-12 Spinning of polypropylene
GB11303/61A Expired GB931417A (en) 1959-05-12 1961-03-28 Spinning of polypropylene

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB16274/59A Expired GB875108A (en) 1959-05-12 1959-05-12 Spinning of polypropylene

Country Status (3)

Country Link
BE (2) BE590730A (en)
GB (2) GB875108A (en)
NL (2) NL251261A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2164073A1 (en) * 1970-12-24 1972-07-06 Exxon Research Engineering Co Process for converting polymers
WO1997049737A1 (en) * 1996-06-26 1997-12-31 Ciba Specialty Chemicals Holding Inc. Decomposing polymers using nor-hals compounds

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3330897A (en) * 1961-02-07 1967-07-11 Chemcell 1963 Ltd Production of fibers of improved elastic recovery
NL289452A (en) * 1962-02-27
US6228951B1 (en) * 1998-08-24 2001-05-08 Japan Polychem Corporation Polypropylene molding material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2164073A1 (en) * 1970-12-24 1972-07-06 Exxon Research Engineering Co Process for converting polymers
WO1997049737A1 (en) * 1996-06-26 1997-12-31 Ciba Specialty Chemicals Holding Inc. Decomposing polymers using nor-hals compounds
US6133414A (en) * 1996-06-26 2000-10-17 Ciba Specialy Chemicals Corporation Decomposing polymers using NOR-HALS compounds

Also Published As

Publication number Publication date
NL251261A (en)
BE590730A (en)
GB875108A (en) 1961-08-16
NL276457A (en)
BE615661A (en)

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