[54] MONODISPERSED ACRYLIC POLYMERS Axioms IN SUPERCRITICAL, NEAR OTHfcR PUBL1CAI IONS>
SUPERCRITICAL AND SUBCRITICAL Francis, A. W., "Ternary Systems of Liquid Carbon
FLUIDS Dioxide", J. Phys. Chem. 58:1099, Dec., 1954.
Smith, R. D. et al., "Direct Fluid Injection Interface for
[75] Inventors: James W.Taylor, South Charleston; s^clSefr^ TSnSJ- ^SS^Ui^ John N Argyropoulos, Scott Depot; i^oniSi y' "Supercritic/Fluid Nucleation of DifJeffrey J. Lear, Dunbar, all of W. f1Cult-to-(^rnminme Solids", paper presented at 1984 a' Annual Meeting, AIChE, San Francisco, Calif., Nov.
25-30, 1984.
[73] Assignee: Union Carbide Chemicals & Plastics Dandage, D. K., et al., "Structure Solubility CorrelaTechnology Corporation, Danbury, tions: Organic Compounds and Dense Carbon Dioxide Conn. Binary Systems", Ind. Eng. Chem. Prod. Res. Dev. 24:
162-166 (1985).
nn A I xr zntiKAi Matson, D. W., et al., "Production of Powders and
[21J Appl. No.: 676,547 Films by the Expansion of Supercritical Solu
tions", J. Materials Science 22: 1919-1928 (1987). [22] Filed: Mar. 28,1991 McHugh, M. A. et al., "Supercritical Fluid Extraction,
Principles and Practice", Butterworth Publishers (1986)
[51] Int.C1.5 C08L 31/00 ?£fn£,an? tPJ^d^TVA ^ ♦• Ak.
f521 U S CI 524/556 524/383 Cobbs, W. et al., High Solids Coatings Above 80% By
52473797524/389; 524/390; 524/42^ Volume'^Water-Borne & High Solids Coatings Sym
[58] Field of Search 524/556,383,379,389, P?s"TM' ,°, rc. D . .
1 J 524/390 424 Matson» D- w- et *l-t Production of Fme Powders by
'the Rapid Expansion of Supercritical Fluid Solutions", Advances in Ceramics vol. 21, pp. 109-121 (1987).
[56] References Cited Kitamura, Y., et al., "Critical Superheat for Flashing of
U S PATENT DOCUMENTS Superheated Liquid Jets'Tnd. Eng.Chem. Fund.
25:206-211 (1986).
4,124,528 11/1978 Modell 252/411 Petersen, R. C. et al., "The Formation of Polymer Fi
4,189,914 2/1980 Marek et al 60/726 bers From the Rapid Expansion of SCF Solutions" Pol.
4,375,387 3/1983 deFilippi et al 202/169 g, C~ ftao-u ,mi %-i i«n \f.n
4,582,731 4/1986 Smith „ 427/421 Eng' & S°L (1987) Vo1- 27 PP' 1693"1687
4,619,735 10/1986 Norton 162/135 Primary Examiner—Paul R. Michl
4,734,227 3/1988 Smith 264/13 . Assistant Examiner—John J. Guarriello
4,734,451 3/1988 Smith 524/493 Attorney, Agent, or Firm--M. N. Reinisch
4,737,384 4/1988 Mutiny et al 427/369
4,923,720 5/1990 Lee 427/422 [57] ABSTRACT
FOREIGN PATENT DOCUMENTS A coating composition low in volatile organic solvents
comprising a monodispersed acrylic polymer solutions
Y,\Vol Zed,' «ep' °l °ermany • containing supercritical, near supercritical or subcritical
55-84328 6/1980 Ja an Gennany' fluids as a diluent therein. Desirably, the monodispersed
58-168674 10/1983 Japan acrylic polymer has a molecular weight such that it is,
59-16703 1/1984 Japan '. & such> a polymeric coating vehicle. 62-152505 7/1987 Japan .
868051 4/1988 South Africa . 18 Claims, 3 Drawing Sheets
Normalized Saturation Point vs. Mn
