Title:
METHOD FOR RECYCLING SCRAP OF POLYOLEFIN RESIN PRODUCT
Document Type and Number:
Japanese Patent JP3153021
Kind Code:
B2
Abstract:
PURPOSE: To prevent degradation of material property of a recycled product and use the recycled product for a long time by adding a specific phenol compound and a specific ring phosphite compound when the recycling is done by shredding or crashing, heating, melting, and molding a scrap of polyolefin resin product.
CONSTITUTION: To a polyolefin resin 100 pts.wt. constituting a scrap of a polyolefin resin product, at least one kind of a phenol compound 0.01-5 pts.wt. to be expressed by the formulas I or II and a ring phosphite compound 0.01-5 pts.wt. to be expressed by the formula III are added. In the formula I, R1 expresses 1-4C alkyl group, n expresses 1-4, A expresses residue obtained by removing n pieces of hydroxyl from alcohol of 1-4 valence. In the formula II, R2 expresses 1-4C alkyl group, R expresses hydrogen atom or 1-4C alkyl group. In the formula III, R4 expresses 1-4C alkyl group or-CH2CH2-CO-O-R5, and R5 expresses 1-30C alkyl group.
Inventors:
Yutaka Nakahara
Toru Haruna
Masayuki Takahashi
Toru Haruna
Masayuki Takahashi
Application Number:
JP31239992A
Publication Date:
April 03, 2001
Filing Date:
November 20, 1992
Export Citation:
Assignee:
Asahi Denka Kogyo Co., Ltd.
International Classes:
B29B17/00; C08J11/24; C08J11/28; B09B3/00; C08K5/13; C08K5/16; C08K5/52; C08L23/00; B29K23/00; B29K105/26; (IPC1-7): B29B17/00; C08J11/24
Domestic Patent References:
| JP4305413A |
Attorney, Agent or Firm:
Osamu Hatori
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