POLYSILOXANE-MODIFIED POLYLACTIC ACID COMPOSITION, COMPOSITION UTILIZING SAME, MOLDED ARTICLE, AND PRODUCTION METHOD

摘要

Disclosed are a polysiloxane-modified polylactic acid resin, composition using same, molded article, and production method, whereby it is possible to produce a molded article via a simple method, and where said article may be used in applications demanding a high level of impact resistance as an alternative to ABS resin or the like, has a similar level of impact resistance as said substances, has superior flexibility with respect to rupture bending strain and tensile breaking strain, and has bleed resistance. The polysiloxane-modified polylactic acid resin has a segment which is a polylactic acid compound, and a segment which is an amino polysiloxane compound which has an amine group. With respect to the amino poly-siloxane compound, amine groups are on average contained in the range of 0.01 to 2.5% inclusive by mass, and with respect to the polylactic acid compound, are on average contained in the range of 3 to 300 ppm inclusive by mass.

主权项

1. A polysiloxane-modified polylactic acid resin having a segment of a polylactic acid compound, and a segment of an amino-containing polysiloxane compound having an amino group, wherein the amino group is on average contained in the range of 0.01 to 2.5% inclusive by weight with respect to the amino-containing polysiloxane compound, and is on average contained in the range of 3 to 300 ppm inclusive by weight with respect to the polylactic acid compound, and the amino-containing polysiloxane compound has the amino group at its side chain and has a number average molecular weight of 900-30000 inclusive,
wherein the segment of the amino-containing polysiloxane compound includes segments comprised of reacted products of said amino-containing polysiloxane compounds with epoxy-containing polysiloxane compounds having an epoxy group, and wherein the epoxy-containing polysiloxane compound includes at least one of epoxy-containing poly-siloxane compounds represented by the Formula (12), (19), (20) or (21), and the epoxy-containing polysiloxane compounds represented by the Formulas (19) or (21) contains epoxy groups of an average of less than 2% by weight: wherein in Formula (12), (19), (20) or (21), R1, R2 and R18-R21 represent independently an alkyl group, an alkenyl group, an aryl group, an aralkyl group, an alkylaryl group having 1-18 carbon atoms, or —(CH2)α—NH—C6H5 (α represents an integer of 1-8), wherein they may be entirely or partially substituted with halogen atoms; R3 represents a divalent organic group; l′ and n′ are an integer greater than or equal to 0; and m is an integer greater than 0.