Fire retardant resin composition
A disclosed fire retardant resin composition includes a thermoplastic resin and a fire retardant. The fire retardant is formed of phosphorated polysaccharide that is formed by attaching thiophosphoric acid ester or phosphoric acid ester to a side chain of natural polysaccharide.
1. A fire retardant resin composition comprising:
a thermoplastic resin; and
a fire retardant,
wherein the fire retardant is formed of a phosphorated polysaccharide that is formed by attaching a thiophosphoric acid ester to a side chain of a natural polysaccharide, and
wherein the natural polysaccharide is cellulose propionate.
2. The fire retardant resin composition as claimed in claim 1 , wherein a rate of a content of phosphorus in the phosphorated polysaccharide is 1 to 20 mass %, and a mass ratio of the thermoplastic resin and the phosphorated polysaccharide is 50 : 50 to 90 : 10.
3. The fire retardant resin composition as claimed in claim 1 , wherein the thiophosphoric acid ester is attached to each of a 2-position, a 3-position, and a 6-position hydroxyl group the cellulose propionate to constitute a thiophosphoric acid ester structure.
4. The fire retardant resin composition as claimed in claim 1 , wherein one selected from a group consisting of dimethyl thiophosphoric acid and diethyl thiophosphoric acid is used as the thiophosphoric acid ester.
5. The fire retardant resin composition as claimed in claim 1 , wherein an aliphatic polyester is used as the thermoplastic resin, and said aliphatic polyester includes at least one selected from a group consisting of polylactic acid, polybutylene succinate, polycaprolactone, polytrimethylene terephthalate, and microbially produced polyhydroxyalkanoate.
6. A fire retardant resin composition comprising:
a thermoplastic resin; and
a fire retardant,
wherein the fire retardant is formed of a phosphorated polysaccharide that is formed by attaching a phosphoric acid ester to a side chain of a natural polysaccharide, and
wherein the natural polysaccharide is cellulose propionate.
7. The fire retardant resin composition as claimed in claim 6 , wherein a rate of a content of phosphorus in the phosphorated polysaccharide is 1 to 20 mass %, and a mass ratio of the thermoplastic resin and the phosphorated polysaccharide is 50 : 50 to 90 : 10.
8. The fire retardant resin composition as claimed in claim 6 , wherein the phosphoric acid ester is attached to each of a 2-position, a 3-position, and a 6-position hydroxyl group of the cellulose propionate to constitute a phosphoric acid ester structure.
9. The fire retardant resin composition as claimed in claim 6 , wherein one selected from a group consisting of dimethyl phosphoric acid and diethyl phosphoric acid is used as the phosphoric acid ester.
10. The fire retardant resin composition as claimed in claim 6 , wherein an aliphatic polyester is used as the thermoplastic resin, and said aliphatic polyester includes at least one selected from a group consisting of a polylactic acid, polybutylene succinate, polycaprolactone, polytrimethylene terephthalate, and microbially produced polyhydroxyalkanoate.