Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1980-11-28
1982-09-14
Hoke, V. P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
260513R, 560152, 544221, C07C14920, C08K 536
Patent
active
043494684
ABSTRACT:
A new process for preparing a polyhydric alcohol 3-alkylthiopropionate polyolefin resin stabilizer is provided, comprising the steps of heating at 40.degree.-160.degree. C. an alpha-olefin having 6 to 28 carbon atoms with betamercaptopropionic acid or a lower alkyl betamercaptopropionate in the presence of an organic peroxide or azonitrile reaction initiator, esterifying the resulting 3-alkylthiopropionic acid or ester with pentaerythritol or tris(2-hydroxyethyl) cyanurate, and recovering the polyhydric alcohol 3-alkylthiopropionate polyolefin resin stabilizer from the mixture.
Polyolefin resin compositions stabilized with the stabilizer prepared by the process of this invention, and stabilizer compositions comprising the stabilizer prepared by the process of this invention together with a phenol and/or an alkaline earth metal salt of a monocarboxylic acid are also provided.
REFERENCES:
patent: 2416052 (1947-02-01), Gribbins
patent: 3629194 (1971-12-01), Onishi et al.
patent: 3708543 (1973-01-01), Hickner et al.
patent: 3741909 (1973-06-01), Yamane et al.
patent: 3758549 (1973-09-01), Dexter et al.
patent: 3966675 (1976-06-01), Shurdak
Organic Chemistry of Bivalent Sulfur-Reid, vol. 1 (1958) pp. 436 to 453.
Octa Chemica Scandinavica 8 (1954)-Smith et al., pp. 1111-1119.
Haruna Tohru
Nakahara Yutaka
Adeka Argus Chemical Co. Ltd.
Hoke V. P.
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