The present disclosure relates to polyester copolymer comprising recycled monomers, a method for preparation thereof, and an article comprising the same, and can provide polyester copolymer having excellent properties while using recycled monomers.

The present disclosure relates to polyester copolymer comprising recycled monomers, a method for preparation thereof, and an article comprising the same, and can provide polyester copolymer having excellent properties while using recycled monomers.

Provided are a liquid crystal polymer (LCP) film and a laminate comprising the same. The LCP film has a first surface and a second surface opposite each other, and a Kurtosis (Rku) of the first surface ranges from 3.0 to 60.0. With the Rku, the LCP film is able to improve the peel strength with a metal foil and ensure that a laminate comprising the same maintains the merit of low insertion loss.

Provided are a liquid crystal polymer (LCP) film and a laminate comprising the same. The LCP film has a first surface and a second surface opposite each other, and a Kurtosis (Rku) of the first surface ranges from 3.0 to 60.0. With the Rku, the LCP film is able to improve the peel strength with a metal foil and ensure that a laminate comprising the same maintains the merit of low insertion loss.

An object of the present invention is to provide a polyester resin having good producibility and color tone, containing fewer foreign bodies, and showing good adhesion to a metal substrate and curability.

A polyester resin containing 2 to 10 ppm by mass of titanium in terms of metal and 50 to 100 ppm by mass of zinc in terms of metal, in which the number of foreign bodies contained in the polyester resin is 15 or less per 5 g of the polyester resin.

An object of the present invention is to provide a polyester resin having good producibility and color tone, containing fewer foreign bodies, and showing good adhesion to a metal substrate and curability.

A polyester resin containing 2 to 10 ppm by mass of titanium in terms of metal and 50 to 100 ppm by mass of zinc in terms of metal, in which the number of foreign bodies contained in the polyester resin is 15 or less per 5 g of the polyester resin.

In various embodiments, the invention relates to poly(propylene fumarate) (PPF)-based star-shaped copolymers synthesized using a core-first approach that uses a multi-functional alcohols as an initiator, and Mg(BHT).sub.2(THF).sub.2 as catalyst for controlled ring opening copolymerization (ROCOP) of maleic anhydride (MAn) with propylene oxide (PO). In some embodiments, these star-PPF copolymers have lower viscosities than their linear analogs, allowing a decrease in DEF fraction in resin formulation, as well as the use of higher molecular weights. These star-shape PPF can be used to prepare PPF:DEF resins containing as much as 70% by weight of the multi-arm PPF star copolymers, and have a low complex viscosity of high M.sub.n star PPF resin that affords rapid printing with a M.sub.n nearly eight times larger than the largest linear PPF oligomer printed previously.

An organic frame material having zinc containing isopoly-molybdic acid metal, a method of manufacturing the same, and the application thereof are provided. The organic frame material having zinc containing isopoly-molybdic acid metal includes a three-dimensional network structure in which the zinc ions coordinate with 2,3,5,6-tetrafluoro-bis (1,2,4-triazole-1-methyl) benzene ligands and trinuclear molybdate anions. The organic frame material having zinc containing isopoly-molybdic acid metal exhibits high catalytic activity, thermal stability, low toxicity, ease of synthetization and use, and strong reproducibility.

An organic frame material having zinc containing isopoly-molybdic acid metal, a method of manufacturing the same, and the application thereof are provided. The organic frame material having zinc containing isopoly-molybdic acid metal includes a three-dimensional network structure in which the zinc ions coordinate with 2,3,5,6-tetrafluoro-bis (1,2,4-triazole-1-methyl) benzene ligands and trinuclear molybdate anions. The organic frame material having zinc containing isopoly-molybdic acid metal exhibits high catalytic activity, thermal stability, low toxicity, ease of synthetization and use, and strong reproducibility.

In various embodiments, the present invention is directed to ABA triblock copolymers having crosslinkable poly(propylene fumarate A blocks and a more flexible poly(lactone) B block formed by sequential ring-opening polymerization and ring-opening copolymerization. These ABA triblock polymers made using ring-opening polymerization of one or more lactone monomers using a bifunctional initiator to form a poly(lactone) B block having terminal hydroxyl groups and the ring-opening copolymerization of maleic anhydride and propylene oxide followed by isomerization of the maleate double bond using an organic base to form the poly(propylene fumarate)(PPF) A blocks. When crosslinked photochemically using, for example, a continuous liquid interface production digital light processing (DLP) Carbon M2 printer, these ABA type triblock copolymers form durable elastomers with tunable degradation and elastic properties. In various embodiments, these polymers are shown to undergo slow, hydrolytic degradation in vitro with minimal loss of mechanical performance during degradation.