15  US 6,248,810 Bl  16  -continued  Example 4  Formulations for Dispersions of Polymer A in Water  Composition, pbw  2  3  4  5  6  7  8  9  10  Deionized Water  100  100  100  100  100  100  100  100  100  165  Dispersion  Inv  Sil  Inv  Inv  Sil  Inv  Inv  Inv  Inv  Inv  Process 1  Dispersion  nice  fail  fail  fail  nice  fail 3  very  nice  very  very  Appearance  nice  nice  nice  Storage Stability 2  nice  coag.  nice,  nice  very  creamed  nice  $^{1}$Dispersion Process: Inv= inversion process, Sil= water-continuous process with Silverson  mixer.  $^{3}$Mixture thickened when water was added and became so thick it climbed out of can.  $^{2}$Storage Stability: Appearance of dispersion after storage at ambient conditions for up to 3  months.  A dispersion of Polymer B was prepared following the  same procedure used to disperse Composition #10 in water.  The procedure worked very well, resulting in a low  viscosity, milky white dispersion which remained stable  upon storage showing no coagulation or phase separation.  Films of this dispersion of Polymer B cast on aluminum and  baked 20 minutes at 175° C., were hard, clear, glossy  coatings having a pale yellow color.  We claim:  1. A  coating formed by crosslinking a waterborne disper› sion which is applied to a substrate, said waterborne disper- sion comprising:  2.  The coating of claim  1,  wherein the aminoplast is a  butylated aminoplast.  3.  The coating of claim  1,  wherein the acid is an acid  which catalyzes crosslinking of the polymer and the ami› noplast.  4.  The coating of claim  1,  wherein the amine is a tertiary  amine selected from the group consisting of triethylamine,  triisopropylamine, methyidiethanolamine and dimethyletha› nolamine.  5.  The coating of claim  1,  wherein the surfactant is an  amine salt of an organic acid.  6.  The coating of claim  1,  wherein the water is present in  the waterborne dispersion at a weight ratio of the water to the  polydiene block polymer ranging from 100:80 to 165:80.  7. An adhesive formed by crosslinking a waterborne  dispersion which is applied to a substrate, said waterborne  dispersion comprising:  18.  The sealant of claim  13,  wherein the water is present  in the waterborne dispersion at a weight ratio of the water to  the polydiene block polymer ranging from 100:80 to 165:80.  *  *  *  *  *  17.  The sealant of claim  13,  wherein the amine is a tertiary  amine selected from the group consisting of triethylamine,  triisopropylamine, methyidiethanolamine and dimethyletha› nolamine.  16.  The sealant of claim  13,  wherein the acid catalyzes  crosslinking of the polymer and the aminoplast.  15.  The sealant of claim  13,  wherein the surfactant is an  amine salt of an organic acid.  14.  The sealant of claim  13,  wherein the aminoplast is a  butylated aminoplast.  13. A  sealant formed by crosslinking a waterborne dis› persion which is applied to a substrate, said waterborne  dispersion comprising:  12.  The adhesive of claim  7,  wherein the water is present  in the waterborne dispersion at a weight ratio of the water to  the polydiene block polymer ranging from 100:80 to 165:80.  11.  The adhesive of claim  7,  wherein the amine is a  tertiary amine selected from the group consisting of  triethylamine, triisopropylamine, methyidiethanolamine and  dimethylethanolamine.  10.  The adhesive of claim  7,  wherein the acid is an acid  which catalyzes crosslinking of the polymer and the ami› noplast.  9.  The adhesive of claim  7,  wherein the surfactant is an  amine salt of an organic acid.  8.  The adhesive of claim  7,  wherein the aminoplast is a  butylated aminoplast.  (c) 0.1 to 10% by weight of a surfactant which is nonionic  or anionic and has a volatile cation;  ( d) 0.1 to 4% by weight of a proton-donating acid catalyst;  and  (e) water.  (a) 10 to 65% by weight of a polydiene block polymer  having a weight average molecular weight of from  2000 to 3,000,000 and containing at least five olefinic  epoxy groups per molecule which are sterically hin- dered;  (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;  (d) 0.1 to 4% by weight of a proton-donating acid catalyst;  and  (e) water.  (a) 10 to 65% by weight of a polydiene block polymer  having a weight average molecular weight of from  2000 to 3,000,000 and containing at least five olefinic  epoxy groups per molecule which are sterically hin› dered;  (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;  ( d) 0.1 to 4% by weight of a proton-donating acid catalyst;  and  (e) water.  (a) 10 to 65% by weight of a polydiene block polymer  having a weight average molecular weight of from  2000 to 3,000,000 and containing at least five olefinic  epoxy groups per molecule which are sterically hin› dered;  (b) 0.2 to 25% by weight of a compatible aminoplast; 