Polymer precursor dispersion containing a micropulp and method of making the dispersion
View Patent ↗This invention relates to a polymer precursor dispersion for use in making a polymer that is a solid at room temperature and further relates to a method of making same where the dispersion comprises a polymer precursor comprising an addition monomer, a condensation monomer, a prepolymer, or a polymer modifier and 0.01 to 50 weight percent of a micropulp having a volume average length of from 0.01 to 100 micrometers.
1. A method of incorporating a micropulp in a polymer precursor for making a polymer that is a solid at room temperature, comprising:
contacting organic fiber, a polymer precursor and a solid component selected from the group consisting of glass, alumina, zirconium oxide, zirconium silicate, cerium-stabilized zirconium oxide, fused zirconia silica, steel, stainless steel, sand, tungsten carbide, silicon nitride, silicon carbide, agate, mullite, flint, vitrified silica, borane nitrate, ceramics, chrome steel, carbon steel, cast stainless steel, plastic resin, or combinations thereof, agitating the organic fiber, the polymer precursor, and the solid component to transform the organic fiber into a micropulp having a volume average length of from 0.01 to 50 micrometers dispersed in the polymer precursor, and optionally removing the solid component.
2. The method of claim 1 , wherein the polymer precursor comprises an addition monomer, a condensation monomer, or a prepolymer.
3. The method of claim 1 , wherein the addition monomer is selected from the group consisting of methyl methacrylate, ethyl acrylate, styrene, acrylonitrile, and vinyl chloride; the condensation monomer is selected from the group consisting of ethylene glycol, dimethyl terephthalate, diethylene glycol, 1,3 propane dial, 1,4 butane diol, and cycolhexane dimethanol; or the prepolymer is selected from the group consisting of polyamide acid, polyester oligomer, and emulsified polymer dispersion.
4. The method of claim 1 , wherein said polymer precursor has a viscosity of less than 10,000 centipoise.
5. The method of claim 1 , wherein the polymer precursor further comprises a solvent.
6. The method of claim 5 , further comprising the additional step of removing a portion of the solvent from the polymer precursor dispersion to form a concentrated polymer precursor dispersion.
7. The method of any one of claims 1 - 6 , further comprising forming a polymer from the polymer precursor having micropulp dispersed therein.
8. The method of claim 7 , further comprising forming an article from the polymer.
9. The method of claim 1 , wherein the polymer precursor further comprises a polymer modifier selected from the group consisting of a polymer plasticizer, a polymer curing agent, a polymer property enhancer, a polymer processing aid, end a polymer surface lubricating agent.
10. The method of claim 1 , wherein the solid component is a ball comprising a material selected from the group consisting of carbon steel, stainless steel, tungsten carbide, ceramic and combinations thereof.