Polypropylene fibers and fabrics

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9322114
APP PUB NO 20140155854A1
SERIAL NO

13691984

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

This invention relates to polypropylene fibers and fabrics containing polypropylene fibers, the fibers comprising propylene polymers comprising at least 50 mol % propylene, said polymers having: a) a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) of about 10 dg/min to about 25 dg/min; b) a dimensionless Stress Ratio/Loss Tangent Index R2 [defined by Eq. (8)] at 190° C. from about 1.5 to about 30; c) an onset temperature of crystallization under flow, Tc,rheol, (as determined by SAOS rheology, 190° C., 1° C./min, where said polymer has 0 wt % nucleating agent present), of at least about 123° C.; d) an average meso run length determined by 13C NMR of at least about 55 or higher; and e) optionally, a loss tangent, tan δ, [defined by Eq. (2)] at an angular frequency of 0.1 rad/s at 190° C. from about 14 to about 70.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
REIFENHAUSER GMBH & CO KG MASCHINENFABRIK53844 TROISDORF

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cinquemani, Claudio Köln, DE 13 32
Doufas, Antonios K Baytown, US 46 1005
Ferry, William Michael Houston, US 8 181
Frey, Detlef Niederkassl, DE 43 266
Geus, Hans-Georg Niederkassel, DE 38 85
Kulkarni, Rahul Ravindra Houston, US 8 53
MacDonald, Jeanne Marie Sugar Land, US 4 18
Mitchell, Cynthia Ann Houston, US 2 13
Sarrazin, Jerome Sint Stevens Woluwe, BE 6 29
Schlag, Peter Troisdorf, DE 8 53
Thurman, Derek Wade Houston, US 3 15

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Oct 26, 2027
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00