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Heat resistant PLA-ABS compositions

A composition and heat-resistant technology, applied in the field of compositions containing polylactic acid, can solve problems such as the problem of durable disposal of plastic products

Inactive Publication Date: 2012-07-18
POLYONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The durability of plastics also poses disposal challenges
Also, many plastic resins are made from petrochemicals, which have long-term supply and cost issues

Method used

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  • Heat resistant PLA-ABS compositions
  • Heat resistant PLA-ABS compositions
  • Heat resistant PLA-ABS compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 33

[0090] The XR 409H high heat resistant ABS of Example 33 was significantly better than the other ABS candidates of Examples 22, 24, 30 and 31, making it the preferred ABS to use.

[0091] Thus, Examples 34-39 in Table 10 focus on PLA, XR 409H high heat resistant ABS and Joncryl 4368 oligomer with some changes in: TiO used 2 , the type of impact modifier used, the recovery use of B225 heat stabilizer (required for industrial implementation), the addition of UV stabilizer (also required for industrial implementation), and the addition of other auxiliary heat stabilizers. Examples 38 and 39 differ from Examples 34-37 in that the compounds were prepared on a production scale extruder and molded on a production scale injection molding machine.

[0092] PLA is used as the main component (Examples 36, 37 and 39), and the average HDT is 89.76°C, which is only higher than that of using The HDT value of the ABS found in Comparative Example A of the ABS was 1% lower. ABS is used as th...

Embodiment AA-HH

[0098] Table 12 provides further evidence of the response as measured by torque rheometry by extrusion using the same equipment employed in Examples 1-37. Demonstration Examples AA-HH compare 100% of the various polymers with a 98% / 2% ratio of those polymers and Joncryl epoxy functional styrene-acrylate oligomers respectively. Tyril SAN is bulk polymerized; all other polymers are emulsion polymerized. An increase in torque and an increase in die pressure, all other factors being equal, indicate that a reaction is occurring. These validation examples demonstrate that residual chemicals in emulsion polymerized polymers favor the reaction of Joncryl oligomers with these polymers, whether ABS or an optional impact modifier.

[0099]

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Abstract

A significant disadvantage of the use of polylactic acid (PLA) has been overcome by the use of acrylonitrile-butadiene-styrene (ABS) in combination with an epoxy functional styrene-acrylate oligomeric chain extender. The composition also often exceeds a threshold of 65 DEG C in heat deflection temperature. Use of an impact modifier further improves the industrial versatility of the heat resistant PLA composition.

Description

[0001] priority claim [0002] This application claims priority to US Provisional Patent Application Serial No. 61 / 256,743 (Attorney Docket No. 12009014), filed October 30, 2009, which is hereby incorporated by reference. technical field [0003] The present invention relates to novel polylactic acid-containing compositions having increased heat resistance to improve the structural integrity of polylactic acid-containing compositions during use. Background of the invention [0004] Plastic products have replaced glass, metal and wood products because plastics can be engineered without breaking, rusting or rotting. The durability of plastic products also creates disposal challenges. Also, many plastic resins are made from petrochemicals, which have long-term supply and cost issues. [0005] Accordingly, efforts are being made to find bio-derived sustainable thermoplastic resin sources, preferably those that degrade or compost to address disposal challenges. [0006] Polyla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L55/02C08L25/04C08K3/22C08J5/00
CPCC08L25/12C08L25/14C08L2201/08C08L67/04C08L55/02C08L2205/03C08L25/10C08L2205/02C08L2666/02C08L2666/18
Inventor 朱世雄R·W·阿瓦基扬
Owner POLYONE CORP