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Compostable olefin polymer compositions

A technology of olefin polymers and compositions, which can be used in fabrics, textiles, textiles, and papermaking, and can solve problems such as non-degradable

Inactive Publication Date: 2010-03-24
BIOTECH PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem has been exacerbated by the lack of landfills, and since they do not degrade in landfills, governments are trying to limit the use of plastics

Method used

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  • Compostable olefin polymer compositions
  • Compostable olefin polymer compositions
  • Compostable olefin polymer compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1.5 grams of Royalene 521 EPDM (Lion Copolymer) was dissolved in 50 grams of toluene at 75°C. Royalene 521 is an amorphous terpolymer of about 58% ethylene, 38% propylene, and 4% ethylidene norbornene (ENB) with a number average molecular weight (Mn) of about 140,000 and a Mw / Mn of about 2.9. After cooling to 40°C, the solution was coated onto a release liner to form a 2 mil film when dry. 2 grams of the dried film were placed in 50 grams of landfill composition containing 35% water according to ASTM D5526; 2 grams were placed in 50 grams of landfill having a water content of 60%. None of the samples showed significant changes after 120 days in landfill at 35°C. Removed from landfill, rinsed with water and dried, sample weight unchanged within 1%.

[0063] The same test was performed using Royalene 3275, an amorphous terpolymer comprising 58% ethylene, 40% propylene, and 2% ENB with a Mn of about 190,000 and a Mw / Mn of about 2.9. After 120 days, the samples showed no...

Embodiment 2

[0065] Example 1 was repeated except that each sample contained 0.05 grams of the above Kenrich Lica 38J added while the polymer was in toluene solution, five samples were run for each variation. After 30 days of landfill exposure, all samples of landfill containing a trace of 35% water showed strong mold growth; those with 60% water showed slight mold growth.

[0066] Sample % Water % Weight Change

[0067] 521 35 -12

[0068] 3275 35 -8

[0069] 521 60 -1-2

[0070] 3275 60 -1-2

[0071] After 60 days, 521 (35%) lost 27% of its initial weight; 3275 (35%) lost 20%; and the 60% water sample lost about 5%.

[0072] After 90 days, 521 (35%) became semi-solid. It was removed by extraction with hexane; it was reduced by about 75% of its initial weight and was of paraffin wax consistency. The 3275 (35%) reduces the starting weight by about half. The 60% water sample appeared to be slightly harder than the original, presumably due to loss of additives and very low MW fraction...

Embodiment 3

[0075] Example 2 was performed as above, but using the Lica 238J described above. With Royalene 521, the weight loss after 30, 60, 90 and 120 days was 10, 25, 70 and 98%, respectively; with 3275, they were 10, 22, 68 and 96%, respectively, all in landfill with 35% water middle. Example 2 was then carried out with the aforementioned Kenrich NZ 38J, zirconate analogs of Lica 38J, with Royalene 521 in a 35% water landfill. The weight loss was 10, 20, 63 and 95% after 30, 60, 90 and 120 days, respectively.

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Abstract

Compositions of olefin polymers such as those derived from monomers of ethylene, propylene, diene and copolymers or terpolymers thereof, are rendered compostable by a monomeric adduct of an organotitanate or zirconate as a prodegradant. Olefin polymer sheets and composites are compostable in landfills.

Description

[0001] related application [0002] This application is related to U.S. Patent Application Serial No. 11 / 747,481, entitled "Biodegradation of Compostable Vinyl Halide Polymer Compositions, Composites, and Landfills," filed May 11, 2007, said 2007 The U.S. patent application, filed May 11, is a continuation-in-part of U.S. Patent Application Serial No. 11 / 041,322, filed January 24, 2005, entitled "Compostable Vinyl Halide Polymer Compositions and Composite Sheets," which The entire specification and claims of the application are hereby incorporated by reference. technical field [0003] The present invention relates to compostable or biodegradable olefin polymer compositions such as ethylene-propylene-diene terpolymers (EPDM) and composite sheets of said polymers. Such olefin polymer articles biodegrade anaerobically in landfills within a relatively short period of time. Background technique [0004] It has been desired for many years to produce plastic materials from polym...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/00
CPCC08L23/16C08L2201/06C08K5/0091C08K5/0033Y10T442/60Y10T442/30C08L23/02C08F297/086C08J5/18D04H1/544
Inventor R·F·格罗斯曼
Owner BIOTECH PRODS