EP 0064167 A1 19821110 - Process for producing high tenacity, high modulus crystalline thermoplastic article and novel product fibers.

Title (en)

Process for producing high tenacity, high modulus crystalline thermoplastic article and novel product fibers.

Title (de)

Verfahren zur Herstellung eines thermoplastischen kristallinen Gegenstandes mit hoher Festigkeit und hohem Modulus und Faserprodukte.

Title (fr)

Procédé pour la fabrication d'un article thermoplastique cristallin ayant une haute ténacité et un module élevé et produits fibreux fabriqués utilisant le procédé.

Publication

EP 0064167 A1 19821110 (EN)

Application

EP 82102964 A 19820407

Priority

US 25926681 A 19810430
US 35901982 A 19820319
US 35902082 A 19820319

Abstract (en)

Solutions of ultrahigh molecular weigh polymers such as polyethylene in a relatively non-volatile solvent are extruded through an aperture (25) at constant concentration through the aperture and cooled to form a first gel of indefinite length (33). The first gels are extracted (D) with a volatile solvent to form a second gel (41) and the second gel is dried (E) to form a low porosity xerogel (47). The first gel, second gel or xerogel, or a combination, are stretched (F). Among the products obtainable are polyethylene fibers of greater than 38 or even 40 g/denier tenacity and of modulus greater than 1000 or even 1600 or 2000 g/denier.

IPC 1-7

D01F 6/04

IPC 8 full level

B29C 49/00 (2006.01); B29C 55/00 (2006.01); B29C 55/04 (2006.01); C08J 5/18 (2006.01); D01F 6/02 (2006.01); D01F 6/04 (2006.01); D01F 6/06 (2006.01); D01F 6/12 (2006.01); D01F 6/66 (2006.01); D02J 1/22 (2006.01)

CPC (source: EP KR)

D01F 6/02 (2013.01 - EP); D01F 6/04 (2013.01 - EP KR); D01F 6/06 (2013.01 - EP KR)

Citation (search report)

[AD] GB 2051667 A 19810121 - STAMICARBON
[AD] GB 2042414 A 19800924 - STAMICARBON
[AD] POLYMER BULLETIN, vol. 1, 1979, Springer Verlag, Berlin (DE)
[AD] POLYMER BULLETIN, vol. 2, 1980, Springer Verlag, Berlin (DE)

Designated contracting state (EPC)

BE CH DE FR GB IT NL SE

DOCDB simple family (publication)

EP 0064167 A1 19821110; EP 0064167 B1 19851121; AU 5024285 A 19860612; AU 549453 B2 19860130; AU 581702 B2 19890302; AU 8225482 A 19821104; CA 1174818 A 19840925; DE 3267521 D1 19860102; ES 513190 A0 19830616; ES 8306775 A1 19830616; JP 2582985 B2 19970219; JP H05106107 A 19930427; JP S585228 A 19830112; KR 830010224 A 19831226; KR 860000202 B1 19860303

DOCDB simple family (application)

EP 82102964 A 19820407; AU 5024285 A 19851121; AU 8225482 A 19820401; CA 401450 A 19820422; DE 3267521 T 19820407; ES 513190 A 19820522; JP 7329782 A 19820430; JP 9552992 A 19920415; KR 820001890 A 19820429