Abstract: A method for preparing an open pourous polymer material, comprises forming of a polymer solution, addition of a porogen to the polymer solution and precipitation with water of polymer from the polymer solution, and the method then comprises removal of solvent and porogen from the polymer material wherein the precipitation is homogenous through that the water is in form of crystal water and that the crystal water is bonded to the porogen, wherein the porogen is a sugar hydrate. An open porous polymer material, a mixture comprising a sugar hydrate and a polymer solution, and a designed material, and uses thereof are also disclosed.

Abstract: The present invention relates to a linear block polymer having a molecular weight of at least 104 Dalton, which linear block polymer is comprised of internally linearly connected sequences, which sequences may be described according to formula (1), wherein 1 to 100% of R1, which 1 to 100 % of R1 may be the same or different, comprise a functional group Z and each Z, which Z may be the same or different is a protected or unprotected functional group such as hydroxyl, amino, carboxyl, thiol, cyano, or nitro group; and, each R2, which R2 may be same or different, may be derived from a diisocyanate and comprises no, one or more ester groups; each R3, which R3 may be same or different, comprises no, one or more ester groups and may be derived from one or more of polyesterdiol, polyetherdiol or monodiol; method for preparation and fractional precipitation, implants, material for promotion of wound healing, pharmaceutical compositions, microencapsules, suspensions and emulsions.

Abstract: The present invention relates to a method for preparing an open pourous polymer material, wherein said method comprises forming or a polymer solution, addition of a porogen to said polymer solution and precipitation with water of polymer from said polymer solution, and said method then comprises removal of solvent and porogen from said polymer material wherein said precipitation is homogenous through that said water is in form of crystal water and that said crystal water is bonded to said porogen, wherein said porogen is a sugar hydrate. It further relates to an open porous polymer material, a mixture comprising a sugar hydrate and a polymer solution. and a designed material, and uses thereof.

Abstract: Porous films for medical use are provided comprising linear block polymers of polyurethane and urea containing hydrolyzable ester groups which are spaced along the carbon chain backbone of the film predetermined distances, so that upon hydrolysis of the ester groups fragments of the polymer are formed which have a size which can be secreted from the body of a mammal, the porous film including pores having an average pore size of up to 600 &mgr;m.

Abstract: Implants are disclosed for use in humans having a rigidity comparable to human bone comprising polyurethane with hydrolysable ester linkages which are spaced apart to provide hydrolysis fragments which are sufficiently small to be resorbed in the human body, the polyurethane comprising a network polymer which is substantially free of urea groups. Methods for the production of such implants are also disclosed.

Abstract: Linear block polymer having a molecular weight of at least 104 Dalton, comprising urea and urethane groups and ester groups at such a distance from each other that after hydrolysis of these ester groups fragments are created which are so small that they are biologically degradable and can be excreted from a human body and further including an end group selected from primary NH2 and OH groups, which can be substituted by a monoamine. The polymers are intended to be used as implants.

Abstract: Method of treating cellulose fibers wherein the fibers are treated with a composition containing a reagent A-B-X based on cyanuric chloride (A) in which one of the three chlorines has been reacted with an amine or hydroxyl compound (B-X). The reagent reacts under alkaline conditions with cellulose hydroxyl groups. A resin, e.g., polyester or vinyl resin, is then reacted with the thus modified cellulose fibers through the B-X substituent.

Abstract: A cement mortar and concrete having a reduced water absorption and with a density of 2000-2500 kg/m.sup.3, at which it calculated on the amount of cement contains 0.2-10% by weight of a polymer in dispersion form consisting of polymeric particles containing hydropholic monomers from one or more of the groups acrylic monomers, methacrylic monomers and styrene and 1-15% calculated on the total amount of monomers of a methacrylate having an aliphatic chain of 12 or more carbons, preferably stearyl methacrylate.