摘要:
The present disclosure describes a treated cellulosic material comprising: a cellulosic material having a porous structure defining a plurality of pores, at least a portion of the pores containing a treating agent comprising: a polymer comprising an olefin-carboxylic acid copolymer; and a modifying agent comprising a quat.
摘要:
Disclosed are methods to form ionomer coatings on a substrate, the ionomer composition comprising an ethylene acid copolymer comprising about 18 to about 30 weight % of copolymerized units of acrylic acid or methacrylic acid, based on the total weight of the parent acid copolymer, the acid copolymer having a melt flow rate from about 200 to about 1000 g/10 min., wherein about 50% to about 70% of the total carboxylic acid groups of the copolymer are neutralized to carboxylic acid salts comprising sodium cations, potassium cations or mixtures thereof.
摘要:
The present invention is directed to saturants for fibrous webs that will confer upon those webs the ability to be heat sealed to many materials without compromising the drapability of the fibrous webs. The present invention is further directed to fibrous webs saturated with the saturant of the present invention and methods for saturating such webs. The invention is further directed to packages or containers comprising the saturated webs and methods of manufacturing such packages. The invention is further directed to temperature sensitive adhesive coatings that can be used with the saturated webs and a method for applying the coating.
摘要:
The invention relates to a method for producing paper, paperboard and cardboard having high dry strength by adding a vinylamine entity-containing polymer and lignosulfonic acid and/or a lignosulfonate to a paper pulp, dewatering the pulp and drying the paper products.
摘要:
The invention relates to a method for producing a polymer dispersion by copolymerisation of 20 - 70 weight parts of a monomer mixture comprising c) 2.5 - 100 wt. % of one or more (meth) acrylic acid esters of monovalent, saturated C3-C8 alcohols as monomers A, and 0 - 97.5 wt. % of one or more other ethylenlically unsaturated monomers as monomers B in 100 weight parts of an aqueous solution which contains 5 - 35 wt.- % of a starch or a starch derivative, in emulsion polymerisation in the presence of an initiator containing peroxide groups, whereby the initiator and monomer can be continually dosed. In a first supply period of 5 - 60 minutes a first amount of an initiator is dosed and in a second supply period of 15 - 180 minutes a second amount of an initiator is dosed. The first amount of initiator is greater than the second amount of initiator.
摘要:
The invention relates to aqueous dispersions of copolymers that can be obtained by: radical copolymerisation of (A) at least one ethylenically unsaturated dicarboxylic acid anhydride derived from at least one dicarboxylic acid containing between 4 and 8 C atoms, (B) at least one oligomer of branched or unbranched C3-C10 alkene, at least one oligomer having an average molecular weight Mn of between 300 and 5000 g/mol or being obtainable by oligomerisation of at least three equivalent C3-C10 alkenes, and (C) optionally at least one ethylenically unsaturated conomoner that is different from (A); followed by optional reaction with (D) at least one compound of general formula (Ia) or (Ib); and subsequent mixing with water. In formulae (Ia) and (Ib), the variables are defined as follows: A1 represents the same or different C2-C20 alkylene, R1 represents linear or branched C1-C30 alkyl, phenyl or hydrogen, n represents a whole number between 1 and 200, and the water content is between 30 and 99.5 wt. % in relation to the aqueous dispersion.