The present invention relates to fibers comprising a polyesteramide (PEA) having a chemical formula described by structural formula (IV),

##STR00001##

wherein m+p varies from 0.9-0.1 and q varies from 0.1 to 0.9; m+p+q=1 whereby m or p could be 0; n is about 5 to about 300; (pref. 50-200); R.sub.1 is independently selected from the group consisting of (C.sub.2-C.sub.20) alkylene, (C.sub.2-C.sub.20) alkenylene, —(R.sub.9—CO—O—R.sub.10—O—CO—R.sub.9)—, —CHR.sub.11—O—CO—R.sub.12—COOCR.sub.11—, and combinations thereof; R.sub.3 and R.sub.4 in a single backbone unit m or p, respectively, are independently selected from the group consisting of hydrogen, (C.sub.1-C.sub.6)alkyl, (C.sub.2-C.sub.6)alkenyl, (C.sub.2-C.sub.6)alkynyl, (C.sub.6-C.sub.10)aryl, (C.sub.1-C.sub.6)alkyl, —(CH.sub.2)SH, —(CH.sub.2).sub.2S(CH.sub.3), —CH.sub.2OH, —CH(OH)CH.sub.3, —(CH.sub.2).sub.4NH.sub.3+, —(CH.sub.2).sub.3NHC(═NH.sub.2+)NH.sub.2, —CH.sub.2COOH, —(CH.sub.2)COOH, —CH.sub.2—CO—NH.sub.2, —CH.sub.2CH.sub.2—CO—NH.sub.2, —CH.sub.2H.sub.2COOH, CH.sub.3—CH.sub.2—CH(CH.sub.3)—, (CH.sub.3).sub.2—CH—CH.sub.2—, H.sub.2N—(CH.sub.2).sub.4—, Ph-CH.sub.2—, CH═C—CH.sub.2—, HO-p-Ph-CH.sub.2—, (CH.sub.3).sub.2—CH—, Ph-NH—, NH—(CH.sub.2).sub.3—C—, NH—CH═N—CH═C—CH.sub.2—; R.sub.5 is selected from the group consisting of (C.sub.2-C.sub.20)alkylene, (C.sub.2-C.sub.20)alkenylene, alkyloxy or oligoethyleneglycol; R.sub.6 is selected from bicyclic-fragments of 1,4:3,6-dianhydrohexitols of structural formula (III);

##STR00002## R.sub.7 is selected from the group consisting of (C.sub.6-C.sub.10)aryl(C.sub.1-C.sub.6)alkyl; R.sub.8 is —(CH2)4-; R.sub.9 or R.sub.10 are independently selected from C.sub.2-C.sub.12 alkylene or C.sub.2-C.sub.12 alkenylene; and R.sub.11 or R.sub.12 are independently selected from H, methyl, C.sub.2-C.sub.12 alkylene or C.sub.2-C.sub.12 alkenylene whereby a is at least 0.05 and b is at least 0.05 and a+b=1.

The present invention relates to a compound obtained by a process comprising the following steps: (i) Reacting at least one isocyanate containing compound, in stoichiometric excess, with a first isocyanate-reactive compound having a number average molecular weight lower than 400, resulting in the formation of at least one prepolymer, (ii) Reacting said prepolymer, in stoichiometric excess, with a second isocyanate-reactive compound having a number average molecular weight equal to or higher than 400, resulting in the formation of a modified prepolymer, (iii) Reacting said modified prepolymer with a hydroxyl-ester compound or a hydroxyl-acid compound with the formation of hydroxyl-ester terminated prepolymer or hydroxyl-acid terminated prepolymer, and Ring-closing said hydroxyl-ester terminated prepolymer or hydroxyl-acid terminated prepolymer; (iv) Formation of said compound made of oxazolidinedione-terminated prepolymer and oxazolidinedione-terminated monomer, which is soluble in said oxazolidinedione-terminated prepolymer.

Provided are a liquid crystal polymer film containing a liquid crystal polymer, in which the liquid crystal polymer film includes a portion where a density of the liquid crystal polymer is low and a portion where the density of the liquid crystal polymer is high; a liquid crystal polymer film containing a liquid crystal polymer and a compound incompatible with the liquid crystal polymer; a liquid crystal polymer film containing a liquid crystal polymer and a compound A, in which an absolute value of a difference between an SP value of the liquid crystal polymer, which is determined by Hoy method, and an SP value of the compound A, which is determined by Hoy method, is 0.1 MPa.sup.0.5 or more; and a method for manufacturing these polymer films; and a laminate using the liquid crystal polymer film.

A polymer having a backbone chain, wherein the backbone chain includes linear amide linkages and nitrogen-atom-containing heteromonocyclic moieties, wherein the backbone chain is free of peptide linkages or wherein the backbone chain has a proportion of peptide linkages of maximum 30%, based on a total number of the linear amide linkages of the backbone chain, and wherein the nitrogen-atom-containing heteromonocyclic moieties have a proportion of 5% by weight to 25% by weight, based on the total weight of the polymer, is provided. A product or article and the use of the polymer for manufacturing or producing the product or article are further provided.

A polymer having a backbone chain, wherein the backbone chain includes linear amide linkages and nitrogen-atom-containing heteromonocyclic moieties, wherein the backbone chain is free of peptide linkages or wherein the backbone chain has a proportion of peptide linkages of maximum 30%, based on a total number of the linear amide linkages of the backbone chain, and wherein the nitrogen-atom-containing heteromonocyclic moieties have a proportion of 5% by weight to 25% by weight, based on the total weight of the polymer, is provided. A product or article and the use of the polymer for manufacturing or producing the product or article are further provided.

Oligomeric substances which contain one or more (meth)acryloyl functional groups as well as two or more amide functional groups are useful as components of compositions which may be cured using actinic irradiation to provide polymeric articles.

Oligomeric substances which contain one or more (meth)acryloyl functional groups as well as two or more amide functional groups are useful as components of compositions which may be cured using actinic irradiation to provide polymeric articles.

Provided is a lactic acid-based block copolymer which is biodegradable while having excellent mechanical properties.

Provided are a liquid crystal polymer film or a polymer film, which has low linear expansion coefficient and has excellent adhesiveness with a metal layer. The liquid crystal polymer film includes a layer A and a layer B on at least one surface of the layer A, in which the layer A contains a liquid crystal polymer and a linear expansion coefficient of the liquid crystal polymer film is −20 ppm/K to 50 ppm/K.

A gas separation membrane, a method for making the gas separation membrane, and a method for using the gas separation membrane are provided. An exemplary gas separation membrane includes a polyether-block-polyamide (PEBA) matrix and a cross-linked network including functionalized polyhedral oligomeric silsesquioxane (POSS) nanoparticles dispersed through the PEBA matrix.