DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS The nonionic monomers employed in the practice of this invention are preferably (1) addition polymerizable, ethylenically unsaturated non-polar compounds, and (2) are oil-soluble.
By "oil-soluble," it is meant that the monomers have solubility parameters as defined and determined by the method of Hildebrand and Scott in The Solubility of Non-Electrolytes, 3rd ed.
, Rheinhold, pp.
129, 301 (1949), which are less than 15, more preferably less than 12, most preferably from about 6 to about 12.
Most nonionic monomers are essentially water-insoluble, i.
e.
, less than 5 grams of the monomer will dissolve in 100 grams of water.
Exemplary nonionic monomers include .
alpha.
-olefins such as ethylene, propylene, 1-butene and other polymerizable olefins; vinyl aromatic monomers such as styrene, vinyl naphthalene, vinyl anthracene as well as halo-, alkyl-, ryl-, arylalkyl-, cyano- and nitro-substituted derivatives thereof such as ar-(t-utyl)styrene, ar-chlorostyrene, ar-methyl-styrene, .
alpha.
-methylstyrene; alkyl and aryl esters of .
alpha.
,.
beta.
-ethylenically unsaturated carboxylic acids such as ethyl acrylate, methyl methacrylate, butyl acrylate, 2-ethylhexyl, phenyl acrylate and other alkyl, aryl and alkylaryl esters of such acid; dienes such as 1,3-butadiene, isoprene, norbornene and 1.
5-hexadiene; as ethylenically unsaturated esters of saturated carboxylic acids such as vinyl acetate and vinyl proprionate; an ethylenically unsaturated halide such as vinyl chloride, vinyl bromine, vinyl fluoride, vinylidene fluoride and vinylidene chloride; unsaturated ethers and ketones such as vinyl methyl ketone, vinyl methyl ether and vinyl ethyl ether; mono- and dialkyl esters, alkylaryl esters and mono- and diaryl esters of .
alpha.
,.
beta.
-ethylenically unsaturated dicarboxylic anhydrides such as diethyl maleate and diphenyl maleate; and the like.
Of the foregoing monomers, .
alpha.
-olefins, vinyl aromatics, alkyl esters of acrylic and methacrylic acid are preferred, with ethylene, propylene, styrene and substituted styrenes being more preferred and styrene being most preferred
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Nonmetallic Processes 
