RESIN COMPOSITION AND RESIN MOLDED ARTICLE
A resin composition includes 100 parts by weight of a cellulose derivative in which at least one hydroxyl group of cellulose is substituted with an acetyl group and from 5 parts by weight to 20 parts by weight of a non-reactive plasticizer that does not have a functional group capable of reacting with the cellulose derivative, and the resin composition exhibits a spiral flow length of 100 mm or more and less than 130 mm as a length of a spiral flow having a thickness of 2 mm under conditions of a temperature of 240° C. and an injection pressure of 90 MPa.
1 . A resin composition, comprising:
100 parts by weight of a cellulose derivative in which at least one hydroxyl group of cellulose is substituted with an acetyl group; and
from 5 parts by weight to 20 parts by weight of a non-reactive plasticizer that does not have a functional group capable of reacting with the cellulose derivative,
wherein the resin composition exhibits a spiral flow length of 100 mm or more and less than 130 mm as a length of a spiral flow having a thickness of 2 mm under conditions of a temperature of 240° C. and an injection pressure of 90 MPa.
2 . The resin composition according to claim 1 , wherein the plasticizer is a compound containing an adipic acid ester.
3 . The resin composition according to claim 1 , wherein the resin composition includes the plasticizer in an amount of 5 parts by weight to 15 parts by weight with respect to 100 parts by weight of the cellulose derivative.
4 . The resin composition according to claim 1 , wherein a substitution degree of the acetyl group in the cellulose derivative is from 2.1 to 2.6.
5 . The resin composition according to claim 1 , further comprising a polyolefin-containing multifunctional elastomer containing a polyolefin as a main component and having a functional group including at least one selected from an epoxy group and a glycidyl group.
6 . The resin composition according to claim 5 , wherein the resin composition includes the polyolefin-containing multifunctional elastomer in an amount of 2 parts by weight to 10 parts by weight.
7 . The resin composition according to claim 5 , wherein the polyolefin-containing multifunctional elastomer is a compound represented by the formula (3):
wherein R 31 represents a linear alkylene group having 2 to 6 carbon atoms, R 32 and R 33 each independently represents a linear alkylene group having 1 to 6 carbon atoms, R 34 and R 35 each independently represents a linear or branched alkyl group having 1 to 4 carbon atoms, A 31 represents an epoxy group or a glycidyl group, n31 represents a integer of 50 to 100, and m31 and p31 each independently represents an integer of 1 to 50.
8 . The resin composition according to claim 1 , wherein the weight percentage of the cellulose derivative to the total resin composition is 50% by weight or more.
9 . A resin molded article obtained by molding the resin composition according to claim 1 .
10 . The resin molded article according to claim 9 , wherein the resin molded article is an injection-molded article.