Group 2:

Le Tien Dung

Nguyen Thi Nu

Duong Thi Hai HoaAugust 17, 2012

OUTLINEOUTLINE

INTRODUCTION ABOUT OXYGEN SCAVENGER SYSTEMINTRODUCTION ABOUT OXYGEN SCAVENGER SYSTEM

• They are the active packaging. • They are mainly used for food and pharmaceutical applications

• To limit the amount of oxygen available for deteriorative reactions that can lead to reduced functionality of the product

PATENT MAPPING ACCORDING TO YEARSPATENT MAPPING ACCORDING TO YEARS

PATENT MAPPING ABOUT OXYGEN SCAVENGER MANUFACTURES PATENT MAPPING ABOUT OXYGEN SCAVENGER MANUFACTURES

PATENT MAPPING PATENT MAPPING Ja

pane

se O

xyge

n-Sc

aven

ger M

anuf

actu

rers

Japa

nese

Oxy

gen-

Scav

enge

r Man

ufac

ture

rs

19771977

19781978

19791979

19801980

19861986

19881988

19931993

19871987

Mitsubishi Gas Chemical

Keplon

Oji Kako

Toppan

Toagosei Chemical Industry

Nippon Soda

Hakuyo

Finetec

Nippon Kayaku

Ueno Seiyaku

Dai Nippon

Powdertec

Ageless®

Keplon™

Tamotsu™

Freshilizer™

Vitalon™

Secule™Sansoless™

Sansocut™

Modulan™

Wonderkeep™

Oxyeater™

Sequl®

PATENT MAPPING PATENT MAPPING

Function Reacant Typical Applications

Properties Application

Absorption Speed

O2↓

Iron

Self-working

Dry; aW < 0.3; tea, nuts 4–7 days

Medium aW(aW <0.65); dried beef 1–3 day

High aW (aW >0.65); cakes, bakeries 0.5 day

Frozen; +3–25°C; raw fish 3 days at -25°C

Moisture-dependent

High aW (aW >0.85) 0.5 day

Pastas

Catecho Self-workingMedium aW(aW <0.65); nuts

High aW(aW >0.65); cakes

Classification of Oxygen Absorbers in Japan

PATENT MAPPING PATENT MAPPING

Function Reacant Typical Applications

Properties Application

Absorption Speed

O2↓ & CO2↓ Iron and calcium Self-working Roasted/ground coffee 3–8 days

O2↓ & CO2↑Ascorbic acid Self-working

Medium aW(aW >0.3 <0.5); nuts

1–4 days

Organic acidand iron

Moisture-dependent

High aW(aW>0.85); cakes

O2↓ & Ethanol ↑

Iron and ethanol on zeolite

Moisture-dependent

High aW(aW>0.85); cakes

Classification of Oxygen Absorbers in Japan

PATENT MAPPING ABOUT RAW MATERIALS PATENT MAPPING ABOUT RAW MATERIALS

RAW MATERIALS RAW MATERIALS

PolymerPolymer AdditiveAdditive

polyethylene terephthalate US006083585

polyethylene naphthalate US006083585

Nylon 6 resin US2010/0255231 A1

LLDPE; 1,2-polybutadiene US6287481 B1

EVOH, PVOH, NylonUS6288161 B1

Cellulose, viscose US20040048011

cobalt neodecanoate US6287481 B1

iron particulates (4-5um) US2010/0255231 A1

cobalt octoate US6288161 B1

zinc acetate, zinc oxidesUS6544611

manganese, magnesium US6544611

antimony oxide US6544611

Photo initiatorsPhoto initiatorsReactant Reactant

Mineral oil US 2010/0255231 A1

Maleic anhydride US6346308

Irgonox 1010 antioxidant US6610215

formaldehyde US20040048011

palladium US20040048011

OsO4 US6509436

benzophenone masterbatch US6287481 B1

PATENT MAPPING COMMERCIAL APPLICATIONSPATENT MAPPING COMMERCIAL APPLICATIONS

COMMERCIAL APPLICATIONSCOMMERCIAL APPLICATIONS

Reduced iron in sachetsReduced iron in sachets Incorporated into the core layersIncorporated into the core layers

Modified-atmosphere–packaged fresh-chilled pasta

Dry beef snacks

Precooked poultry master packs

Real bacon bits

Macadamia nuts in jars

Pepperoni chips

Fresh red meat distribution package

Bulk peanuts

Bakery goods

Regenerated collagen sausage casings

Several shelf-stable U.S. military ration items

NASA (shelf-stable tortillas)

Polyester beer, juice and ketchup bottles

Closure liners for beer bottles

A few pharmaceuticals and medical supplies

Candy

• Formula 1: US 2010/0255231 A1

FORMULATIONFORMULATION

Components Ratio for weight (%) Function Trade name and

Supplier

Iron particulates (4-5 um)

5 or 20 FreshBlend (oxygen scavenger)

Sodium bisulfate and sodium chloride composite powder

Nylon 6 resin 95 or 80 Custom Resins Nylene 3411

Mineral oil 0.2 wt % Surfactan

The extruder was set at 2500C for all the heating zones and a die temperature at 2600C

The extruded strands were air cooled.Or optionally water cooled prior to pelletizing.

• Formula 2: US 6682791

FORMULATIONFORMULATION

Layers Thickness Component

A 0.5 mils 20% LLDPE*: 80% LDPE** blend

B 0.2 mils low rate oxygen scavenging material of 9:1 ratio of oxygen scavenging polymer to metal catalyst

C 2.5 mils 20% LLDPE : 80% LDPE blend

D 0.1 mils low rate oxygen scavenging material of 9:1 ratio of oxygen scavenging polymer to metal catalyst

E 0.5 mils 20% LLDPE : 80% LDPE blend

*linear low density polyethylene

**low density polyethylene

• Formula 3: US 6287481 B1

FORMULATIONFORMULATION

Components Ratio for weight (%) Function Trade name and

Supplier

LLDPE The outer layers of the film

Dowlex® 3010, Dow Chemical

1,2-polybutadiene 68% The inner oxygen scavenging layer

B830, JSR (Japan Synthetic Rubber)

EPDM rubber 12% The inner oxygen scavenging layer

Vistalon® 3708, Exxon

EVA-9 (ethylene/vinyl acetate copolymer) 20% The inner oxygen

scavenging layer Exxon

cobalt neodecanoate Reactant

benzophenone masterbatch Photoinitiator

A three-layer oxygen scavenging film was prepared by a flat coextrusion process. The final concentration of cobalt in the scavenging layer of the film was 540 ppm as cobalt metal, and the final concentration of benzophienone was 0 5%

• Formula 4: US 6287481 B1

FORMULATIONFORMULATION

Components Ratio for weight (%) Function Trade name and Supplier

Saran coated PET//EVA/OSL/LLDPE

0.48//1.2/0.5/0.3 mil)

Ethylene/vinyl acetate copolymer layer

Rexene PE1375

SBS 50% The OSL layer Vector®8508 from Dexco

LDPE 40% The OSL layer Chevron PE1017

EVA 8.54% The OSL layer Quantum

cobalt neodecanoate 0.90% Reactant Ten-Cem® from OMG. Inc.

benzophenone 0.5% Photoinitiator

CaO 0.050% The OSL layer

stabilizer 0.01% The OSL layer lrganox®) 1076 from Ciba-Geigy

CONCLUSIONCONCLUSION

• Oxygen scavengers is active packaging which have two types and

mechanisms of action• Iron-Based Systems• Oxygen Scavenging Polymer Materials.

• They are mainly used for food and pharmaceutical applications• They are the most patented of all active packaging technologies (with at

least 50 patents through 1989 and 20 issued from 1990 to 1994)• They are important for our life

• The economics• Health• Environment

REFERENCESREFERENCES

• Brody, A. L.; Kline, L. R. and Strupinsky, E. R. Active packaging for food applications.

Originally Published by Technomic Published [Online], 2001, 222.

• Cook, P. 1999. “Stealth Scavenging Systems: A Remarkable Breakthrough

Technology.”Proceedings of “OxygenAbsorbers: 2000 and Beyond” Conference,

Chicago,Illi-nois,George O. Schroeder Associates,Inc.,Appleton,Wisconsin. June.

• Rooney, M. L. 1993a. “Oxygen scavenging compositions.” PCT Patent

Application PCT/AU93/00598.

• Valyi, Emery. 1977. “Composite materials.” U.S. Patent 4,048,361. September 13.

• http://www.freepatentsonline.com/result.html?

p=1&edit_alert=&srch=xprtsrch&query_txt=oxygen+scavenger+packaging&uspat=

on&date_range=last20&stemming=on&sort=relevance&search=Search

Thank you!

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