摘要:
A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k′) determined in 0.01M NaCl greater than 0.75 and a storage modulus (G′) for a 1.5 wt. % actives polymer solution at 4.6 Hz greater than 175 Pa.
摘要:
The present invention is directed to methods for reducing wax content of pulp furnish by treatment with a wax agglomeration agent followed by removal of wax particles.
摘要:
A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k′) determined in 0.01M NaCl greater than 0.75 and a storage modulus (G′) for a 1.5 wt. % actives polymer solution at 4.6 Hz greater than 175 Pa.
摘要:
Method for inhibiting scale deposits in an aqueous system. The method may include at least one of adding and forming anti-scalant in the aqueous system such that an amount of anti-scalant in the aqueous system is up to about 1000 ppm, wherein the anti-scalant comprises at least one of polyvalent metal silicate and polyvalent metal carbonate, wherein the aqueous system has a pH of at least about 9, and wherein a mean particle size of the anti-scalant is less than about 3 microns. The method may also include at least one of adding and forming anti-scalant in the aqueous system such that an amount of anti-scalant in the aqueous system is up to about 1000 ppm, wherein the anti-scalant comprises at least one of polyvalent metal silicate and polyvalent metal carbonate, and wherein the aqueous system has a pH of at least about 9; and adding dispersant to the aqueous system. The method may involve forming anti-scalant in the aqueous system such that an amount of anti-scalant in the aqueous system is up to about 1000 ppm, wherein the anti-scalant comprises at least one of polyvalent metal silicate and polyvalent metal carbonate, and wherein a mean particle size of the anti-scalant is less than about 3 microns. The method may further include at least one of adding and forming anti-scalant in the aqueous system, wherein the anti-scalant comprises at least one of polyvalent metal silicate and polyvalent metal carbonate; and adding at least one protein to the aqueous system. Compositions therefor.
摘要:
A method for inhibiting resinous and sticky substances from filling or forming deposits on or within papermaking forming wire, by applying to said wire an effective inhibiting amount of a composition comprising at least one cationic agent selected from the group consisting of (a) cationic polyureas, (b) hydrophobically modified cationic polymers, (c) alkylammonium or/and alkylimidazolium salts, and optionally at least one nonionic amphiphilic copolymer selected from (i) hydrophobically modified polyethylene glycols], (ii) hydrophobically modified cellulose ethers, (iii) copolymers of vinyl alcohol and vinyl alkonate, (iv) polyoxyalkylene block copolymers, and (v) hydrophilically modified polydimethylsiloxanes.
摘要:
A method of improving retention and drainage in a papermaking process is disclosed. The method provides for the addition of an associative polymer, an inorganic particle and optionally a siliceous material to the papermaking slurry. Additionally, a composition comprising an associative polymer, and an inorganic particle and optionally further comprising cellulose fiber is disclosed.
摘要:
A method of improving retention and drainage in a papermaking process is disclosed. The method provides for the addition of a water soluble copolymer prepared under certain conditions, and a siliceous material to the papermaking slurry. Additionally, a composition comprising a water soluble copolymer, prepared under certain conditions, and a siliceous material and optionally further comprising cellulose fiber is disclosed.
摘要:
The invention relates to a stable aqueous slurry composition comprising clay or clay-like material, hydrophobically associative polymer, and optionally a surfactant; and a method of inhibiting the deposition of organic contaminants in pulp and papermaking applications.
摘要:
The invention relates to a stable aqueous slurry composition comprising clay or clay-like material, hydrophobically associative polymer, and optionally a surfactant; and a method of inhibiting the deposition of organic contaminants in pulp and papermaking applications.
摘要:
A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k′) determined in 0.01M NaCl greater than 0.75 and a storage modulus (G′) for a 1.5 wt. % actives polymer solution at 4.6 Hz greater than 175 Pa.