Dispersions of higher crystallinity olefins

Abstract

Dispersions and methods for forming dispersions that include a higher crystallinity polyolefin and at least one dispersing agent are disclosed. Various applications for use of the dispersions are also disclosed.

1 - 3 . (canceled) 
     
     
         14 . A method of forming an aqueous dispersion, comprising:
 melt kneading (A) at least one higher crystallinity polyolefin, having a crystallinity of greater than 50 percent, and (B) at least one stabilizing agent, to produce a melt-kneaded product;   diluting the melt-kneaded product with water; and   melt kneading the resulting mixture to form the dispersion;   wherein the polyolefin comprises an ethylene hompolymer, an ethylene/α-olefin copolymer, an ethylene/α-olefin multiblock interpolymer; or combinations of two or more thereof.   
     
     
         15 . The method of  claim 14 , wherein the melt kneading comprises forming the aqueous dispersion in an extrusion apparatus comprising a variable high internal phase emulsion creation zone, the method further comprising controlling an extrusion apparatus outlet pressure via a self-cleaning micro-notch V-ball control valve. 
     
     
         16 . A foam produced from a dispersion prepared by the method of  claim 14 . 
     
     
         17 . The foam of  claim 16 , having a compression set at 85° C., 20 minutes, at a pressure of 0.5 psig of less than 70 percent. 
     
     
         18 . The foam of  claim 16 , comprising cells having a size range from about 5 micrometers diameter to about 1000 micrometers diameter. 
     
     
         19 . The foam of  claim 18 , wherein the cells comprise open cells. 
     
     
         20 . The foam of  claim 16 , wherein the dispersion has a viscosity of not more than about 50,000 cP at 25° C. 
     
     
         21 - 22 . (canceled) 
     
     
         23 . An article formed by a process comprising:
 impregnating a fibrous structure with a compound;   the compound comprising an aqueous dispersion, the dispersion comprising;   at least one higher crystallinity polyolefin, having a crystallinity greater than 50 percent;   at least one dispersing agent; and water; and wherein the polyolefin comprises an ethylene hompolymer, an ethylene/α-olefin copolymer, an ethylene/α-olefin multiblock interpolymer; or combinations thereof.   
     
     
         24 . A coated fiber comprising;
 a compound in contact with a portion of a fiber, wherein the compound at the time of contacting a higher crystallinity polyolefin; and   at least one higher crystallinity polyolefin, having a crystallinity greater than 50 percent;   at least one dispersing agent; and water; and wherein the polyolefin comprises an ethylene hompolymer, an ethylene/α-olefin copolymer, an ethylene/α-olefin multiblock interpolymer; or combinations thereof,   wherein the fiber has a diameter between 5 and 35 microns; and   wherein a thickness of a coating layer of the compound on the fiber ranges from about 0.1 to 10 microns.   
     
     
         25 - 33 . (canceled)