摘要:
The invention relates to the use of formaldehyde-free aqueous binders with broad molecular weight distribution for substrates, comprising (A) 0 to 100 wt. % of an ethylenically-unsaturated acid anhydride, or an ethylenically-unsaturated carboxylic acid the carboxylic acid group of which can form an anhydride or mixtures thereof, (B) 100 to 0 wt. % of an ethylenically-unsaturated compound, (C) at least one polyfunctional curing agent or mixtures thereof and (D) 1 - 80 wt. % of an aqueous polymer dispersion, whereby the polymers from A) and B), obtained by radical polymerisation, on classification in a coordinate system of mean molecular weights Mw and polydispersity values, lie on the surface above a straight line, defined by the linear equation y = 1,25x + 20,000 and displaced in the y-direction by at least + 3,000, whereby the x-axis is the weight average molecular weight and the y axis is the polydispersity value multiplied by 10,000. The invention further relates to the binder itself and the use thereof for example, for moulded bodies, mats or sheets, in particular, for fibrous and particulate substrates such as fibre fleece, glass fibres, rockwool, reprocessed cotton, natural fibres or artificial fibres.
摘要:
A process for making a multifunctional superabsorbent polymer, and for making an absorbent structure containing superabsorbent polymer. The synthesis (i.e., polymerization) of the superabsorbent is completely integrated into the process for forming the multifunctional superabsorbent polymer and/or absorbent structure. More particularly, a monomer solution containing an oxidizing agent, a monomer solution containing a reducing agent, and at least one functional additive are combined to form the multifunctional superabsorbent polymer. A valve can be used to control the liquid drop sizes of the monomer solutions as well as of the oxidizing agent, reducing agent, and functional additive(s). The droplets can be collected on a substrate, resulting in the formation of an absorbent structure.
摘要:
The present invention is directed to ion-sensitive, water-dispersible polymers. The present invention is also directed to a method of making ion-sensitive, water-dispersible polymers and their applicability as binder compositions. The present invention is further directed to fiber-containing fabrics and webs comprising ion-sensitive, water-dispersible binder compositions and their applicability in water-dispersible personal care products.
摘要:
A rheology modifier for solvent-based coatings which is a polyacrylic acid or a poly(C1-4)-alkyl acrylic acid wherein at least 30 % of the -COOH groups are converted to ester and/or amide groups. Preferred compounds are esters of polyacrylic acid where about 50 % of the -COOH groups are esterified with a C4-12-alcohol.
摘要:
Die vorliegende Erfindung betrifft neuartige mindestens ein sterisch gehindertes einwertiges und/oder mehrwertiges Phenol enthaltende Superabsorber, ein Verfahren zu ihrer Herstellung unter Verwendung mindestens ein sterisch gehindertes einwertiges und/oder mehrwertiges Phenol enthaltender säuregruppentragender Monomere, insbesondere Acrylsäure, und ihre Verwendung zur Absorption wässriger Flüssigkeiten.