SELF-EMULSIFYING EPOXY COMPOSITION AND THE COATING COMPOSITION PREPARED FROM THE SAME
A self-emulsifying epoxy composition is prepared by the components comprising an epoxide adduct a) and an epoxide compound b), the solid content of the self-emulsifying composition has a smaller particle size. The self-emulsifying epoxy composition can be used to prepare the coating composition which has favorable anti-corrosion-performance.
1 - 15 . (canceled)
16 . A self-emulsifying epoxy composition, prepared by the components comprising:
a) an epoxide adduct, wherein the epoxide adduct has a formula of I or II
wherein R 1 and R 2 are independently selected from C 1 -C 30 aliphatic hydrocarbonyl groups and C 3 -C 30 cycloaliphatic hydrocarbonyl groups, m is an integer selected from 20 to 200, n is 0 or an integer selected from 1 to 100;
R 3 and R 4 are independently selected from C 1 -C 30 aliphatic hydrocarbonyl groups and C 3 -C 30 cycloaliphatic hydrocarbonyl groups, p is an integer selected from 20 to 200, q is 0 or an integer selected from 1 to 100;
b) an epoxide compound, wherein the epoxide compound has at least two epoxide groups per molecule and an epoxide group content of 500 to 10,000 mmol/kg, and an amount of 25-90 wt. %, based on 100% by weight of the self-emulsifying epoxy composition; and
c) catalysts.
17 . The self-emulsifying epoxy composition according to claim 16 , wherein the epoxide adduct has a weight average molecular weight of 1,000 to 20,0000.
18 . The self-emulsifying epoxy composition according to claim 16 , wherein the epoxide adduct has an amount of 1-20 wt. %, based on 100% by weight of the self-emulsifying epoxy composition.
19 . The self-emulsifying epoxy composition according to claim 16 , wherein the epoxide adduct has an epoxidize ratio of 50-100%.
20 . The self-emulsifying epoxy composition according to claim 16 , wherein R 1 , R 2 , R 3 and R 4 are independently selected from C 1 -C 10 aliphatic hydrocarbonyl groups and C 3 -C 10 cycloaliphatic hydrocarbonyl groups.
21 . The self-emulsifying epoxy composition according to claim 16 , wherein the epoxide compound b) has a formula of III or IV
wherein x is 0 or an integer of 1 to 10, R 5 is selected from aliphatic C 1 -C 30 aliphatic hydrocarbonyl groups and C 3 -C 30 cycloaliphatic hydrocarbonyl groups, R 6 is selected from aliphatic, cycloaliphatic and aromatic hydrocarbonyl group having 3-20 carbon atoms.
22 . The self-emulsifying epoxy composition according to claim 21 , wherein R 5 is a C 1 -C 10 aliphatic hydrocarbonyl group.
23 . The self-emulsifying epoxy composition according to claim 21 , wherein R 6 is selected from C 3 -C 20 aliphatic hydrocarbonyl groups atoms and C 3 -C 12 aromatic hydrocarbonyl groups.
24 . The self-emulsifying epoxy composition according to claim 16 , wherein the composition further comprises a bisphenol compound with an amount of 1-25 wt. %, based on 100% by weight of the self-emulsifying epoxy composition.
25 . The self-emulsifying epoxy composition according to claim 24 , wherein the bisphenol compound is selected from Bisphenol A, Bisphenol F and a combination thereof.
26 . The self-emulsifying epoxy composition according to claim 16 , wherein the solid in the self-emulsifying epoxy composition has a particle size diameter range with a D 90 from 0.3 μm to 3 μm, as determined by means of laser light diffraction.
27 . A method for using the self-emulsifying epoxy composition according to claim 16 , the method comprising using the self-emulsifying epoxy composition in coating, adhesive, sealant, and paints.
28 . A coating composition comprising
a) an coating component comprising the self-emulsifying epoxy composition according to claim 16 ;
b) an epoxy curing agent; and
c) optional solvents and additives.
29 . The coating composition according to claim 28 , wherein the coating component has an amount of 40-70 wt. %, based on 100% by weight of the coating composition.
30 . The coating composition according to claim 28 , wherein the coating composition is a container coating, machinery coating, marine coating, or wind power coating.