Home

Primary Examiner: Woo, Jay H.
Assistant Examiner:
Attorney: Whisler; John W.

Next ten patents ordered by date:

Chemically reducing residual acrylonitrile monomer in nitrile polymers and shaped packaging materials formed therefrom
Method and apparatus for forming multiple thickness bead
Method of manufacturing roller chimes for closed head drums
Method of making biaxially oriented nonwoven fabrics
Fumigating method and apparatus
Gas exchange apparatus
Diacetylene time-temperature indicators
Exhaust gas sensor having porous, metal-impregnated ceramic element
Cleaning attachment to clean flask-shaped receivers of chemical analysis apparatus
Coating polymerization reactors with oligomers derived from polyhydric phenols plus a bleach

Translate:
En
De
Es
Fr
It
Pt
Ja
Ko
Zh

Title: Process for producing high tenacity polyethylene fibers

Abstract: Polyethylene yarns having tenacities of at least 12 grams per denier are produced at commercially feasible spinning speeds by a process in which a high density polyethylene having a M.sub.n of at least 20,000 and a M.sub.w of less than 125,000 is extruded through a high temperature spinneret (220.degree.-335.degree. C.) to form yarns which are hot-drawn at a temperature between about 115.degree. and 132.degree. C. The yarns produced by this process are particularly useful as industrial cordage.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Wu, Wen-Li (Pensacola, FL, US)
Black, William B. (Pensacola, FL, US)

Application Number: 848168
Filing Date: 1977-11-03
Publication_date: 1980-10-14
Assignee: Monsanto Company (St. Louis, MO)
Primary Class(es): 264/210.8 264/290.5
Other Classes:
US Patent Ref:

3078139	Feb, 1963	Brown et al.	264/210.
3361859	Jan, 1968	Cenzato	264/210.
3962205	Jun, 1976	Ward et al.	264/289.

Other Refs: 27586324473222650747250955737-976539-1285940-181341-27351498628

Feb, 1964	AU
Apr, 1975	DE
May, 1977	DE
Nov, 1977	DE
Jul, 1962	JP
Jul, 1964	JP
Feb, 1965	JP
Feb, 1966	JP
Jan, 1978	GB

Other References: Baranov et al., Fizika Tyerdogo Tela., (Leningrad), 17 (5), 1550-1552 (1975), trans.
Capaccio et al., Polymer, 1974, vol. 15, pp. 233-238, Apr. 1974.
Meinel et al., J. of Polym. Sci., A-2, 9, 67-83, 1971.
"Influence of Extrusion Ratio on the Tensile Properties of PE", Kojima et al., J. of Polym. Scie. Polym. Physic., vol. 16, pp. 1729-1737 (1978).
Perkins et al., Polymer Engin. & Science, Mar. 1976, vol. 16, No. 3, pp. 200-203.
Capiati et al., J. of Polym. Science, Polymer Phisics Ed., vol. 13, 1177; 14 1186 (1975).
"Relationships Between Structural Pargim. and Tenacity of PP Monotils", Sheehan et al. Textile Kes J. pp. 626-637, Jul. 1965.