US006248810Bl  (12)  United States Patent  St. Clair et al.  (10)  Patent No.:  US 6,248,810 Bl  *Jun.19,2001  (45)  Date of Patent:  (54)  WATERBORNE DISPERSIONS OF  EPOXIDIZED POLYDIENE BLOCK  COPOLYMERS AND AMINO RESINS  (75)  Inventors:  David John St. Clair,  Houston;  James  Robert Erickson,  Katy, both of TX  (US)  (73)  Assignee:  Shell Oil Company,  Houston, TX (US)  ( *)  Notice:  This patent issued on a continued pros› ecution application filed under 37 CFR  1.53( d), and is subject to the twenty year  patent term provisions of 35 U.S.C.  154(a)(2).  Subject to any disclaimer, the term of this  patent is extended or adjusted under 35  U.S.C. 154(b) by  O  days.  (21)  Appl. No.:  08/389,520  (22)  Filed:  Feb. 16, 1995  Related U.S. Application Data  (62)  Division of application No. 08/262,818, filed on Jun. 21,  1994, now abandoned.  (51)  Int. Cl.7  ............................  C08L 53/02;  C08L 61/24;  C08L 61/28  (52)  U.S. Cl.  .........................  523/416;  525/92  K;  525/314  (58)  Field of Search  .............................. 525/92, 407, 416,  525/92  K,  314; 523/416  (56)  References Cited  U.S. PATENT DOCUMENTS  2,522,349  9/1950 D’Ianni .................................... 260/3  3,212,955  10/1965 Kaizermann ........................... 161/88  3,361,617  1/1968 Kaizermann ........................... 161/88  3,366,583  1/1968 Wilson ..................................... 260/3  3,699,184  *  10/1972 Taylor et al. ........................ 525/901  4,135,037  *  1/1979 Udipi et al. .......................... 523/455  4,233,197  *  11/1980 Howell, Jr ............................ 525/510  4,237,245  12/1980 Halasa et al. ........................ 525/272  4,255,305  *  3/1981 Howell, Jr ............................ 523/416  4,374,965  2/1983 Dickie et al. ........................ 525/510  4,439,587  3/1984 Martinez et al. .................... 525/292  4,486,571  12/1984 Holubka ............................... 525/110  4,507,446  3/1985 Demmer ............................... 525/523  4,508,765  4/1985 Ring et al. ........................... 525/481  4,596,843  *  6/1986 Wind .................................... 523/416  4,786,705  11/1988 Koleske ................................. 528/72  4,957,967  9/1990 Mizuno et al. ........................ 525/68  5,149,895  5,210,359  5,229,464  *  5,247,026  *  9/1992 Coolbaugh et al. ................. 526/173  5/1993 Coolbaugh et al. ................. 526/173  7/1993 Erickson et al. ..................... 525/271  9/1993 Erickson et al. ..................... 524/314  151877  0396780  0441485  0 498 426  Al  1039378  10/1950 (AU) .  11/1990 (EP) .  8/1991 (EP) .  2/1992 (EP) .  8/1966 (GB) .  FOREIGN PATENT DOCUMENTS  OTHER PUBLICATIONS  American  Cyanamid  Bulletin,  "High  Solids  Amino  Crosslinking Agents", 1990.*  "Melamine/Formaldehyde Crosslinkers: Characterization,  Network Formation ... ",  D. Bauer, Prag. in Org. Coatings,  14, 1986, pp. 193-218.  The Chemistry of Organic Film Formers  by D.  H.  Solomon  published by  J.  Wiley & Sons, 1986, Ch. 9, pp. 222-250.  American Cyanamid Product Sheets,  1990.  Fifty Years of Amino Coating Resins  by Albert  J.  Kirsch  published in 1986 by American Cyanamid Co.  Journal of Coatings Tech.,  vol. 51, No. 656, pp. 61-70, Sep.  1979, "Reaction Mechanism of Melamine Resins".  Journal of Coatings Tech.,  vol. 51, No. 658, pp. 101-110,  Nov. 1979, "Chemistry of Glycouril-Formaldehyde Resins  and Their ... ".  Journal of Coatings Tech.,  vol. 52, No. 660, pp. 75-83, Jan.  1980, "Effect of Catalyst Structure on the Properties ... ".  Cymel 303 Crosslinking Agent,  published by American  Cyanamid, 1990.  High Solids Amino Crosslinking Agents,  published by  American Cyanamid, 1990.  * cited by examiner  Primary Examiner-Robert  E. L. Sellers  (74)  Attorney, Agent, or Firm-Donald  F.  Haas  A  crosslinkble waterborne dispersion useful as a coating on  metal substrates of an epoxidized polydiene block polymer  composition which comprises: (a) 10 to 65% by weight of a  polydiene block polymer containing at least five olefinic  epoxy groups per molecule which are sterically hindered, (b)  0.2 to 25% by weight of a compatible aminoplast, (c) 0.1 to  10% by weight of a surfactant which is nonionic or anionic  and has a volatile cation, and (d) the balance water.  A  water-continuous process and an inversion process for mak› ing a dispersion are also described.  (57)  ABSTRACT  18 Claims, No Drawings 