Phosphorus-containing antioxidant stabilized against hydrolysis
OwnerChing-Fan Chiu, Kun-Chang Lee +2inventors
InventorsCHING-FAN CHIU, KUN-CHANG LEE, WEN-YI SU, DONG-BI SHIUEH
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Abstract
An organic phosphorus-containing antioxidant which is stablized against hydrolysis includes (a) 20 to 99.9 wt % of organic phosphite or phosphonite; and (b) 0.1 to 80 wt % of acid-binding metal salt treated with a surface conditioning agent, wherein the weight ratio of the surface conditioning agent to the acid-binding metal salt is 0.1 to 50 wt %:99.9 to 50 wt %, and the surface conditioning agent is selected from the group consisting of silanes, titanates, zirconates, aluminates, zirco-alumiates, non-ionic surfactants, and anionic surfactants.
Claims21
A stabilized organic phosphorus-containing antioxidant comprising:
- (a) 20 to 99.9 wt % of organic phosphite or phosphonite;
- and
- (b) 0.1 to 80 wt % of acid-binding metal salt treated with a surface conditioning agent,
- wherein the weight ratio of said surface conditioning agent to said acid-binding metal salt is 0.1 to 50 wt %:99.9 to 50 wt %, and said surface conditioning agent is selected from the group consisting of silane coupling agents, titanate coupling agents, zirconate coupling agents, aluminate coupling agents, zirco-aluminate coupling agents, non-ionic surfactants, and anionic surfactants.
A thermoplastic resin composition comprising an organic polymer and a stabilized organic phosphorus-containing antioxidant, said antioxidant comprising:
- (a) 20 to 99.9 wt % of organic phosphite or phosphonite;
- and
- (b) 0.1 to 80 wt % of acid-binding metal salt treated with a surface conditioning agent,
- wherein the weight ratio of said surface conditioning agent to said acid-binding metal salt is 0.1 to 50 wt %:99.9 to 50 wt %, and said surface conditioning agent is selected from the group consisting of silane coupling agents, titanate coupling agents, zirconate coupling agents, aluminate coupling agents, zirco-aluminate coupling agents, non-ionic surfactants, and anionic surfactants.
A process for producing thermoplastic resin composition comprising compounding and extruding, via an extruder, a mixture of an organic polymer having a water content greater than 2% and an organic phosphorus-containing antioxidant, wherein said organic phosphorus-containing antioxidant comprises:
- (a) 20 to 99.9 wt % of organic phosphite or phosphonite;
- and
- (b) 0.1 to 80 wt % of acid-binding metal salt treated with a surface conditioning agent, wherein the weight ratio of said surface conditioning agent to said acid-binding metal salt is 0.1 to 50 wt %:99.9 to 50 wt %, and said surface conditioning agent is selected from the group consisting of silane coupling agents, titanate coupling agents, zirconate coupling agents, aluminate coupling agents, zirco-aluminate coupling agents, non-ionic surfactants, and anionic surfactants.
Dependencies are inferred from the claim text.