摘要:
The invention relates to a method for producing water-absorbing polymer particles with a higher permeability by polymerising droplets of a monomer solution in a gas phase surrounding the droplets. The monomer solution contains at least 0.5 wt %, in relation to the monomer, of a cross-linking agent and polymerisation takes place in the droplets in the homogeneous phase and the polymer particles have an average diameter of at least 150 µm.
摘要:
The invention relates to a method for the production of water absorbent polymer particles by polymerizing drops of a monomer solution in a gas phase surrounding the drops, wherein the initiator of the monomer solution is added 0.5 to 60 seconds before the production of the drops.
摘要:
Method for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution, the monomer solution containing at least two initiators, one of the initiators being a peroxide other than persulfate, and the molar ratio of peroxide to the other initiator being at least 1 : 8, the water-absorbing polymer particles themselves, and hygienic articles containing these water-absorbing polymer particles.
摘要:
The invention relates to a method for producing polymer particles by the polymerization of fluid drops in a gas phase, wherein a fluid, comprising at least one monomer, is metered from at least one supply line by means of a plurality of bores into a reaction chamber comprising the gas phase, and wherein the ratio between the length of the supply line and the largest diameter of the supply line in the region of the plurality of bores is at least 10.
摘要:
The invention relates to a method for the production of water absorbent polymer particles by polymerizing drops, comprising at least one monomer in a gas phase surrounding the drops, wherein the drops are produced by surrounding a first monomer solution with a second monomer solution and polymerizing the second monomer solution to a higher cross-linked polymer than the first monomer solution.