Thermoplastic moulding composition consisting of (A) 51 to 69.9 wt % of polyamide elastomer; (B) 15 to 38 wt % of ethylene-α-olefin copolymer; (C) 3 to 25 wt % of polyamide selected from the group consisting of: PA6, PA66, PA6/66, PA610, PA612, PA614, PA616, PA6/610, PA66/610 or mixtures thereof; (D) 0.1 to 2.0 wt % of heat stabilizers based on copper and/or iodide, organic stabilizers or a mixture thereof; (E) 0 to 5.0 wt % of additives, different from (A) to (D);
where the sum of (A) to (E) makes 100 wt % of the total moulding composition, and with the proviso that the sum of (B) and (C) is in the range from 30 to 48 wt % based on the total moulding composition.

Lubricious thermoplastic articles are formed from thermoplastic compounds including (a) thermoplastic elastomer selected from thermoplastic polyurethane, polyether block amide, and combinations thereof; and (b) from about 5 to about 20 weight percent, by weight of the compound, of hydrophilic water-insoluble polymer selected from polyolefin-polyoxyalkylene block copolymer, crosslinked polyvinylpyrrolidone, and combinations thereof. The thermoplastic compounds are capable of providing enhanced lubricity in the thermoplastic articles without significant degradation in mechanical properties such as elongation and tensile strength, as compared to thermoplastic articles formed from the neat thermoplastic elastomer and subjected to the same heat processing history.

In some aspects, the present disclosure pertains to systems for forming hydrogels that comprise (a) a first composition that comprises a polyiodinated polyamino compound that comprises a polyamino moiety linked to a polyiodinated aromatic moiety by an amide group or ester group and (b) a second composition that comprises a reactive multi-arm polymer that comprises a plurality of hydrophilic polymer arms having reactive end groups that are reactive with amino groups of the polyiodinated polyamino compound. Other aspects of the present disclosure pertain to medical hydrogels and methods of making medical hydrogels that are based on such compositions. Further aspects of the present disclosure pertain to methods of making polyiodinated polyamino compounds.

The present invention addresses the problem of providing a pregnancy-induced hypertension syndrome therapy composition having controlled placental permeability. Provided are nicotinamide-encapsulating micelles having a particle diameter of 25-100 nm. Controlling the particle diameter of the nicotinamide-encapsulating micelles enables control of placental permeability so as to make it possible to accumulate nicotinamide-encapsulating micelles in a placental while suppressing transfer to a fetus. Administering the nicotinamide-encapsulating micelles brings about a superior effect of reducing blood pressure during a pregnancy-induced hypertension syndrome.

The present invention addresses the problem of providing a pregnancy-induced hypertension syndrome therapy composition having controlled placental permeability. Provided are nicotinamide-encapsulating micelles having a particle diameter of 25-100 nm. Controlling the particle diameter of the nicotinamide-encapsulating micelles enables control of placental permeability so as to make it possible to accumulate nicotinamide-encapsulating micelles in a placental while suppressing transfer to a fetus. Administering the nicotinamide-encapsulating micelles brings about a superior effect of reducing blood pressure during a pregnancy-induced hypertension syndrome.

Provided is a polybenzoxazole having a structural unit represented by General Formula [1]. In General Formula [1], R.sup.1 is a tetravalent organic group represented by General Formula [2], and R.sup.2 is a divalent organic group. In General Formula [2], two n’s are each independently an integer of 0 to 3, in a case where a plurality of R.sup.3′s are present, the plurality of R.sup.3′s each independently represent a monovalent substituent, and *1, *2, *3, and *4 each independently represent a bonding site, in which one of *1 and *2 is bonded to an oxygen atom in General Formula [1] and the other is bonded to a nitrogen atom in General Formula [1], and one of *3 and *4 is bonded to an oxygen atom in General Formula [1] and the other is bonded to a nitrogen atom in General Formula [1].

##STR00001##

##STR00002##

Provided is a polybenzoxazole having a structural unit represented by General Formula [1]. In General Formula [1], R.sup.1 is a tetravalent organic group represented by General Formula [2], and R.sup.2 is a divalent organic group. In General Formula [2], two n’s are each independently an integer of 0 to 3, in a case where a plurality of R.sup.3′s are present, the plurality of R.sup.3′s each independently represent a monovalent substituent, and *1, *2, *3, and *4 each independently represent a bonding site, in which one of *1 and *2 is bonded to an oxygen atom in General Formula [1] and the other is bonded to a nitrogen atom in General Formula [1], and one of *3 and *4 is bonded to an oxygen atom in General Formula [1] and the other is bonded to a nitrogen atom in General Formula [1].

##STR00001##

##STR00002##

Provided is a laminate that generates a structural color, where the laminate can be subjected to a deep-drawing process without deteriorating the color developing structure of the structural color. The laminate according to an embodiment of the present invention includes a polyamide layer (1) and a thermoplastic polyurethane layer (2) having a color developing structure of a structural color. The thermoplastic polyurethane layer (2) is preferably a thermoplastic polyurethane layer having a structure having recesses and protrusions on a face that is opposite a face in contact with the polyamide layer (1) or a layer formed by alternately laminating two types of thermoplastic polyurethanes having a difference in refractive indexes of 0.03 or greater.

A molding compound contains polyether block amide (PEBA) based on a subunit 1 made of at least one linear aliphatic diamine having 5 to 15 C atoms and at least one linear aliphatic or aromatic dicarboxylic acid having 6 to 16 C atoms. The PEBA also contains a subunit 2 made of at least one polyether diol having at least 3 C atoms per ether oxygen and primary OH groups at the chain ends. The sum of the C atoms of diamine and dicarboxylic acid is odd and is 19 or 21, and the number-average molar mass of the subunit 2 is 200 to 900 g/mol. A molded object can be created from the molding compound, which can be a molded part, a film, a bristle, a fiber, or a foam.

A molding compound contains polyether block amide (PEBA) based on a subunit 1 made of at least one linear aliphatic diamine having 5 to 15 C atoms and at least one linear aliphatic or aromatic dicarboxylic acid having 6 to 16 C atoms. The PEBA also contains a subunit 2 made of at least one polyether diol having at least 3 C atoms per ether oxygen and primary OH groups at the chain ends. The sum of the C atoms of diamine and dicarboxylic acid is odd and is 19 or 21, and the number-average molar mass of the subunit 2 is 200 to 900 g/mol. A molded object can be created from the molding compound, which can be a molded part, a film, a bristle, a fiber, or a foam.