Precision inkjet printing of epoxy compounds
View Patent ↗Thermal inkjet printing through nozzles of width of about 25 microns or less is done with an ink having epoxy material suspended in the ink by a graft polymer having acid or other hydrophilic backbone, a hydrophobic side chain, and a stabilizing side chain, in which the molar ratio of hydrophilic moiety to hydrophobic moiety to stabilizing moiety is about 6:1:1 to 0:10:1 respectively.
1. A method of inkjet printing comprising thermal expulsion by vaporizing through nozzles of maximum width of about 25 microns a solution of epoxy material emulsified in water by a graft polymer having an hydrophilic backbone, a hydrophobic side chain and a stabilizing side chain having an electron rich part and a hydrophilic part in a molar ratio of about 6:1:1 to 0:10:1 respectively, wherein said epoxy material is an aromatic functionality containing epoxy compound.
2. The method of inkjet printing as in claim 1 in which said hydrophobic side chain comprises
wherein n is an integer from 1 to 20, m is an integer from 1 to 3, and each R 1 is independently selected from C 1 -C 9 alkyl, or aryl-C 1 -C 9 alkyl, provided that at least one of said R 1 is aryl-C 1 -C 9 alkyl, and each R 2 and R 3 is independently selected from H and —CH 3 .
3. The method of inkiet printing as in claim 2 in which said stabilizing side chain comprises
wherein n is 1 to 40, and R 2 is independently selected from H and —CH 3 .
4. The method of inkiet printing of claim 3 in which said molar ration is about 1:1:1.
5. The method of inkiet printing of claim 2 in which said molar ratio is about 1:1:1.
6. The method of inkiet printing as in claim 1 in which said stabilizing side chain comprises
wherein n is 1 to 40, and R 2 is independently selected from H and —CH 3 .
7. The method of inkiet printing of claim 6 in which said molar ratio is about 1:1:1.
8. The method of inkjet printing of claim 1 in which said molar ratio is about 1:1:1.
9. A method of inkjet printing comprising thermal expulsion by vaporizing through nozzles of maximum width of about 25 microns a solution of epoxy material emulsified in water by a graft polymer having an hydrophilic backbone, at least one side chain, said polymer comprising random repeat units derived from:
wherein x ranges from about 0 to about 20;
wherein y is an integer from 0 to 10, n is an integer from 1 to 20, m is an integer from 1 to 3, and each R 1 is independently selected from C 1 -C 9 alkyl, or aryl-C 1 -C 9 alkyl, provided that at least one of said R 1 is aryl-C l -C 9 alkyl, and each R 2 and R 3 is independently selected from H and —CH 3 ; and
wherein z ranges from 0 to 5, preferably 1, and n ranges from 1 to 40, wherein said epoxy material is an aromatic functionality containing epoxy compound.
10. The method of inkjet printing of claim 9 in which x is in the range of about 1 to about 6.
11. The method of inkjet printing of claim 10 in which z is about 1.
12. The method of inkjet printing of claim 9 in which z is about 1.