Abstract: Pigment printing and quality printing results depends largely on the composition and performance of printing paste, which play a key role thickener. I am using reversed-phase suspension polymerization, will be in and of acrylic acid and MBAM aqueous solution, mixing with the role of emulsifier and its dispersion in the non-polar organic solvents to form a water-oil type (W / O) emulsion, Synthetic polymer to pigment printing thickenerLG-301. And solution of pH, cross-linker agent, initiator, polymerization temperature and nitrogen pass factors of synthetic thickener and synthetic application performance study, using the method of the pigment printing thickener printed fabric, with a yield high, a clear outline of the pattern, feel good and so on. Summary of reactive printing paste at home and abroad of the status quo and discussed the development of Taiwan into a thickening agent to improve the performance and feel resistant electrolyte relevant theoretical research. Water—solhydrophobic long—chain monomers were synthesized by the reaction of acrylic acid with surfactants of fatty alc.polyoxyethylene ethers,and were copolymerized with acrylic acid by the inverse emulsion polymn to give hydrophobic associative polyacrylic acid thickeners with good electrolyte resistance.