The invention disclosed herein concerns a process for producing a polyanhydride of a narrow-polydispersity and uses of the polyanhydride.

The present disclosure relates to a composition that includes a structure that includes ##STR00001##
where R.sub.1 includes at least one of a carbon atom and/or an oxygen atom, R.sup.2 includes at least one of a carbon atom and/or an oxygen atom, and represents a covalent bond. In some embodiments of the present disclosure, the composition may be bioderived.

The present disclosure relates to a composition that includes a structure that includes ##STR00001##
where R.sub.1 includes at least one of a carbon atom and/or an oxygen atom, R.sup.2 includes at least one of a carbon atom and/or an oxygen atom, and represents a covalent bond. In some embodiments of the present disclosure, the composition may be bioderived.

The present invention discloses the fabrication and application of a shape memory polymer possessing transesterification-induced permanent reshaping. The ester-containing crosslinked polymer is obtained by crosslinking ester bearing polymer precursors or by reaction of monomers which yield ester bonds. The transition temperature falls between 20-150 C. The reshaping temperature is tuned by catalyst amount and should be 20 C. above the transition temperature. The breakthrough of the present invention lies in integrating shape memory effect and plastic deformation into the same polymer and triggering the respective function at different occasions. The permanent shape of as synthesized polymer could be modified arbitrarily and cumulatively. Therefore, the hierarchical structure which could not otherwise be obtained due to the limit of mold fabrication process should expand the practical application of SMPs.

The present invention discloses the fabrication and application of a shape memory polymer possessing transesterification-induced permanent reshaping. The ester-containing crosslinked polymer is obtained by crosslinking ester bearing polymer precursors or by reaction of monomers which yield ester bonds. The transition temperature falls between 20-150 C. The reshaping temperature is tuned by catalyst amount and should be 20 C. above the transition temperature. The breakthrough of the present invention lies in integrating shape memory effect and plastic deformation into the same polymer and triggering the respective function at different occasions. The permanent shape of as synthesized polymer could be modified arbitrarily and cumulatively. Therefore, the hierarchical structure which could not otherwise be obtained due to the limit of mold fabrication process should expand the practical application of SMPs.

The present disclosure relates to thermoplastic resin compositions with improved impact strength, tensile modulus, and/or ductility, such as under low-temperature conditions. The present disclosure relates to articles formed therefrom, such as molded or extruded articles. The composition can include a condensation polyamide and a maleated polyolefin, such as ?10 wt % to ?50 wt % of a maleated polyolefin having a grafted maleic anhydride incorporation of ?0.05 to ?1.5 wt % based on total weight of the maleated polyolefin.

The present disclosure relates to thermoplastic resin compositions with improved impact strength, tensile modulus, and/or ductility, such as under low-temperature conditions. The present disclosure relates to articles formed therefrom, such as molded or extruded articles. The composition can include a condensation polyamide and a maleated polyolefin, such as ?10 wt % to ?50 wt % of a maleated polyolefin having a grafted maleic anhydride incorporation of ?0.05 to ?1.5 wt % based on total weight of the maleated polyolefin.

An object of the present invention is to provide a powder component of which a coating film having excellent transparency can be formed, a resin composition for coating, and a coating film. A powder component of the present invention is a powder component containing a polyarylate containing a repeating unit represented by Formula (A-I) and a repeating unit represented by Formula (A-II), and a compound that is different from the polyarylate and that has a repeating unit represented by Formula (B), in which a value obtained by subtracting a measured value 1 from a measured value 2 is 2,000 ppm by mass or less. Measured value 1: a proportion of a mass of a compound represented by Formula (C) in the powder component with respect to a whole mass of the powder component. Measured value 2: a proportion of the mass of the compound represented by Formula (C) in a mixture obtained by mixing the powder component with diethylamine with respect to the whole mass of the powder component.

A resin containing oxetane and epoxy groups is provided, being formed by reacting (a) a product of reacting 1 part by mole of a mono-oxetane with a hydroxyl group and 1.1 to 2.5 parts by mole of anhydride, and (b) 2.1 to 4.2 parts by mole of a diepoxy compound. The mono-oxetane with a hydroxyl group has a structure: ##STR00001##
wherein R.sup.1 is H, C.sub.1-6 alkyl group, C.sub.1-6 fluoroalkyl group, alkenyl group, or phenyl group, and R.sup.2 is C.sub.1-6 alkylene group or vinyl ether group.

A resin containing oxetane and epoxy groups is provided, being formed by reacting (a) a product of reacting 1 part by mole of a mono-oxetane with a hydroxyl group and 1.1 to 2.5 parts by mole of anhydride, and (b) 2.1 to 4.2 parts by mole of a diepoxy compound. The mono-oxetane with a hydroxyl group has a structure: ##STR00001##
wherein R.sup.1 is H, C.sub.1-6 alkyl group, C.sub.1-6 fluoroalkyl group, alkenyl group, or phenyl group, and R.sup.2 is C.sub.1-6 alkylene group or vinyl ether group.