Title:
POLYPROPYLENE FIBER FOR REINFORCING CEMENT
Document Type and Number:
Japanese Patent JP2633763
Kind Code:
B2
Abstract:
PURPOSE: To provide a cement formed body with excelling in bending strength and Charpy impact strength by using high strength polypropylene fiber with good diffusivity which normal alkyl phosphate alkaline metal salt is given to high strength fiber highly drawn at high temp. by using polypropylene with narrow molecular weight distribution and high stereoregularity.
CONSTITUTION: Polypropylene fiber which is drawn yarn of highly crystalline polypropylene with <5 Q value (Q: weight average molecular weight to number average molecular weight ratios), 97<HI<100 boiled n-heptane insoluble matter (HI: wt.%) and 94<IPF<100 isotactic pentad fraction (IPF: mol.%) and which has >6gr/denier breaking strength and on which an alkyl phosphate alkali metal salt is stuck accounting for 0.05-10wt.% of fiber weight is used as reinforcing material.
Inventors:
TAKAI YOSUKE
Application Number:
JP12395992A
Publication Date:
July 23, 1997
Filing Date:
May 15, 1992
Export Citation:
Assignee:
DAIWA BOSEKI KK
International Classes:
C04B16/06; C04B16/02; C04B28/02; D01F6/06; D06M13/02; D06M13/244; D06M13/282; D06M13/292; E04C5/07; D06M101/00; D06M101/16; D06M101/18; D06M101/20; D06M101/40; (IPC1-7): C04B16/06; D01F6/06; D06M13/292
Attorney, Agent or Firm:
Hiroyuki Ikeuchi (1 person outside)