Thermoplastic starch and starch-based biodegradable film

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11732058
SERIAL NO

16938248

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A multi-stage modified thermoplastic starch (TPS) masterbatch is obtained by four-stage modification treatment as follows: (i) 100 parts of starch with a moisture content of 15% to 30% are added to a high-speed mixer and stirred under room temperature; (ii) Heated to 50° C. to 70° C., polybutadiene (PB), plasticizer and a chemical modifier are added. The mixture is then stirred a second time; (iii) Heated to 75° C. to 95° C., tackifier, lubricant, filler and chain extender are added. The mixture is again stirred a third time. (iv) A biodegradable resin is added at this temperature, and the resulting mixture is stirred a fourth time. After the stirring is completed, the resulting mixture is incubated at this temperature for a predetermined time, and then added to a twin-screw extruder for melt extrusion. The present invention also discloses a preparation method and use.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
NANJING WURUI BIODEGRADABLE NEW MATERIAL RESEARCH INSTITUTE CO LTDROOM 901 PHASE II XINDI CENTER BLOCK B HEXI BUSINESS CENTER JIANYE DISTRICT NANJING JIANGSU CHINA NANJING

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Changping Nanjing, CN 6 37
Shen, Yucai Nanjing, CN 1 1

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Feb 22, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Feb 22, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Feb 22, 2035
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00