Abstract:
The present invention provides an ester-based resin composition having a hydrolysis resistance which is free from significant increase in melt viscosity and solution viscosity. The ester-based resin composition of the present invention includes an ester-based resin, an aliphatic polycarbodiimide other than a xylylene-based aliphatic polycarbodiimide, and a xylylene-based polycarbodiimide, in which a mass ratio of the aliphatic polycarbodiimide other than a xylylene-based aliphatic polycarbodiimide to the xylylene-based polycarbodiimide [(aliphatic polycarbodiimide other than xylylene-based aliphatic polycarbodiimide)/(xylylene-based polycarbodiimide)] is from 0.1 to 10.0.
Abstract:
There is provided a compatibilizer for polyester resin which can produce better compatibility than conventional counterparts, and a polyester resin composition using the compatibilizer. The compatibilizer comprises a polycarbodiimide compound represented by the formula (1) describe below wherein the carbodiimide equivalent of the polycarbodiimide compound is 280 or higher; and in the formula (1), R1 and R2 are residues formed by eliminating a functional group from an organic compound having the one functional group reactive with an isocyanate group; R3 is a divalent residue formed by eliminating two isocyanate groups from a diisocyanate compound; R4 is a divalent residue formed by eliminating two hydroxyl groups from a diol compound; X1 and X2 are bonds formed by reaction of the functional group of the organic compound with one of the two isocyanate groups of the diisocyanate compound; and m and n=1 to 20, m+n≤25, and p=0 to 39, provided that the number of carbodiimide groups in one molecule is 2 to 40.
Abstract:
The present invention relates to a process for producing a polyester resin composition, including the step of mixing a polyester resin (A), an aromatic carbodiimide (B) and an aliphatic polycarbodiimide (C) at a temperature not lower than a melting temperature of the polyester resin, in which the polyester resin (A) and the aromatic carbodiimide (B) are mixed in the presence of the aliphatic polycarbodiimide (C).
Abstract:
A biodegradable resin composition is usable for producing a molded article having high biodegradability particularly in the ocean. The biodegradable resin composition contains a biodegradable resin and one or more components selected from agarose, sodium alginate, casein, and keratin. The content of the biodegradable resin is 50% by weight or more.
Abstract:
There are provided a resin additive with which the generation of an isocyanate gas during the production of a master batch or a resin composition can be effectively suppressed when a carbodiimide compound is used as an additive for improving the hydrolysis resistance of a resin, a master batch using the above resin additive, and a method for producing the same, and a resin composition using the above resin additive, and a method for producing the same. A resin additive comprising a carbodiimide compound (A) and a surfactant (B), and a master batch and a resin composition comprising the above resin additive and a resin (D), and methods for producing these.
Abstract:
The present invention relates to a polyester resin composition including a polyester resin (A), an aromatic carbodiimide (B) and an aliphatic polycarbodiimide (C), the polyester resin (A) being a polyester resin (a-1) produced from an aliphatic polycarboxylic acid and a dialkyl ester thereof, or an aliphatic polycarboxylic acid anhydride, and an aliphatic polyol, a polyester resin (a-2) produced from an aromatic polycarboxylic acid and a dialkyl ester thereof, or an aromatic polycarboxylic acid anhydride, and an aliphatic polyol, a polyester resin (a-3) produced from 3-hydroxyalkanoic acid, polyethylene terephthalate (a-4), or a polyester resin (a-5) constituted of a copolymer of the polyester resins (a-1) and (a-2).