CONTINUOUS PROCESS FOR PRODUCING POLYPROPYLENE MIXTURE HAVING HIGH STRESS CRACKING RESISTANCE AND FUSING RESISTANCE

Title:

CONTINUOUS PROCESS FOR PRODUCING POLYPROPYLENE MIXTURE HAVING HIGH STRESS CRACKING RESISTANCE AND FUSING RESISTANCE

Document Type and Number:

Japanese Patent JPH09328583

Kind Code:

A

Abstract:

To obtain continuously a polypropylene mixture having high stress cracking resistance and fusing resistance by irradiating a polypropylene powder with a low-energy radiation produced from a low-energy electron accelerator while powerfully and thoroughly kneading it under inert conditions.

While a polypropylene powder having a mean particle diameter of 0.01-0.5mm is being powerfully and thoroughly mixed under inert conditions, it is irradiated with a low-energy radiation produced from a low-energy (150-300keV) electron accelerator at a dose of 0.05-12Mrd, desirably 0.5-12Mrd and a temperature of 20-50°C. Before and/or after the irradiation, the propylene powder is mixed with 0.05-2.5 mass % stabilizer, 0.1-1 mass % antistatic agent, 0.1-3 mass % pigment, optionally 0.05-5 mass % difunctional monomer, 0.05-1 mass % nucleator, 5-40 mass % filler and/or reinforcing agent, 2-20 mass % flameproofing agent and/or 0.01-1 mass % processing aid.

Inventors:

MANFURETSUTO RATSUSHIYU
AHIMU HETSUSE
HARUTOMUUTO BUTSUKA
NORUBERUTO RAIHERUTO
URUFU PANTSUAA
RAINAA MEENERUTO

Application Number:

JP4638097A

Publication Date:

December 22, 1997

Filing Date:

February 28, 1997

Export Citation:

Click for automatic bibliography generation Help

Assignee:

TSUE D PORIMERE GMBH P

International Classes:

C08J7/00; C08J3/20; C08J3/28; C08J9/00; C08L23/10; (IPC1-7): C08L23/10; C08J7/00; C08J9/00

Attorney, Agent or Firm:

浅村皓（外３名）

Previous Patent: RUBBER COMPOSITION FOR TIRE TREAD

Next Patent: THERMOFORMING RESIN COMPOSITION AND SHEET PREPARED THEREFROM