Flame retardant polypropylene resin composition
AssigneeSamsung Atofina Co. Ltd.
InventorsIn-Sik Jung, Jong-Soo Hong, Sung-Man Lee, Man-Seang Her
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Abstract
The present invention provides a polypropylene resin composition including a polypropylene resin having a melt flow rate of 4-18 g/10 minutes, a flame retardant additive having a low melting point, an antimony oxide, a UV stabilizer, a silane coupling agent, and titanium dioxide as a light-blocking agent. The resin composition of the invention produces products exhibiting excellent flame retarding properties, stability against weather, and maintainability of physical/mechanical properties as shown by maintaining the original flame retarding properties after long periods of outdoor exposure and hydrothermal dipping treatments.
Claims5
A flame retardant polypropylene resin composition comprising:
- 40-86% by weight of polypropylene resin with a melt flow rate of 4-18 g/10 minutes;
- 9-16% by weight of a halogen-containing flame retardant additive having a melting point of 95° C. to 120° C.;
- 4-15% by weight of an antimony oxide in the form of white granules;
- 0.2-3.0% by weight of an ultraviolet stabilizer, wherein the ultraviolet stabilizer comprises a mixture of a HALS ultraviolet stabilizer with a molecular weight of more than 2,000 and a UV absorber, wherein the ratio of HALS ultraviolet stabilizer to the UV absorber, ranges from 1:15 to 15:1;
- 0.1-5% by weight of a silane coupling agent;
- and
- 0.2-5% by weight titanium dioxide.
Dependencies are inferred from the claim text.