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1. US20040220339 - Polymer precursor dispersion containing a micropulp and method of making the dispersion

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What is claimed is:

1. A polymer precursor dispersion for use in making a polymer that is a solid at room temperature, comprising:
a polymer precursor comprising an addition monomer, a condensation monomer, a prepolymer, or a polymer modifier; and
a micropulp having a volume average length of from 0.01 to 100 micrometers, the micropulp comprising 0.01 to 50 weight percent of the dispersion.
2. The polymer precursor dispersion of claim 1, wherein said polymer precursor has a viscosity of less than 10,000 centipoise at room temperature.
3. The polymer precursor dispersion of claim 1, wherein the polymer precursor further comprises a solvent.
4. The polymer precursor dispersion of claim 1, wherein the weight percent of micropulp is 0.01 to 10 weight percent.
5. A polymer made using the polymer precursor dispersion of anyone of claims 1- 4.
6. A shaped article comprising the polymer of claim 5.
7. 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,
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 100 micrometers dispersed in the polymer precursor, and
optionally removing the solid component.
8. The method of claim 7, wherein the polymer precursor comprises an addition monomer, a condensation monomer, a prepolymer, or a polymer modifier.
9. The method of claim 7, 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 diol, 1, 4 butane diol, and cycolhexane dimethanol;
the prepolymer is selected from the group consisting of polyamide acid, polyester oligomer, and emulsified polymer dispersion; or
the polymer modifier is selected from the group consisting of a polymer plasticizer, a polymer additive, a polymer curing agent, a polymer property enhancer, a polymer processing aid, and a polymer surface lubricating agent.
10. The method of claim 7, wherein said polymer precursor has a viscosity of less than 10,000 centipoise.
11. The method of claim 7, wherein the polymer precursor further comprises a solvent.
12. The method of claim 11, further comprising the additional step of removing a portion of the solvent from the polymer precursor dispersion to form a concentrated polymer precursor dispersion.
13. The method of anyone of claims 7- 12, further comprising forming a polymer from the polymer precursor having micropulp dispersed therein.
14. The method of claim 13, further comprising forming an article from the polymer.
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