Mixed s-alkylthiopropionic acid esters and polymers stabilized t

Details Mixed s-alkylthiopropionic acid esters and polymers stabilized t Mixed s-alkylthiopropionic acid esters and polymers stabilized t

1991-10-01

1993-05-04

Hoke, Veronica 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...

560152, C07C32352, C08K 536

Patent

active

052082830

ABSTRACT:
Mixed esters of pentaerythritol and the like with at least two different 3-alkylthiopropionic acids are provided. Each acid from which the ester is prepared has a different alkyl group. This facilitates tailoring the mixed ester for use as a stabilizer which is especially compatible with a particular polymer resin material. Preferably, each 3-alkylthiopropionic acid is prepared by a direct addition reaction between an alkylmercaptan and acrylic acid or an alkali metal salt thereof, the reaction being carried out by heating the reactants in the presence of an aqueous alkaline solution.

REFERENCES:
patent: 2601063 (1952-06-01), Smith et al.
patent: 3629194 (1971-12-01), Onishi et al.
patent: 3637809 (1972-01-01), Kleiner
patent: 3758549 (1973-09-01), Dexter et al.
patent: 4080364 (1978-03-01), Kauder et al.
patent: 4226991 (1980-10-01), Nakahara et al.
patent: 4349468 (1982-09-01), Nakahara et al.
patent: 4774355 (1988-09-01), Omori et al.
patent: 4794138 (1988-12-01), Dunski et al.
patent: 5055606 (1991-10-01), Fisch et al.
patent: 5057567 (1991-10-01), Fisch et al.
patent: 5057622 (1991-10-01), Chisolm et al.
Smith et al "Addition of Thioghycollic Acid to Alpha-Alkenes" Acta Chemica Scandinavica 8, vol. 8, No. 7, 1954.
"Reactions of Mercaptans with Acrylic and Methacrylic Derivatives", Hurd et al, Journal of American Cemical Society, vol. 60, pp. 2328-2335, Oct. 1947.
"Methyl 3-n-Dodecylmercaptopropionate", Journal of American Chemical Society, vol. 73, p. 4050, 1951.

Affiliated with

Also associated with

Rating

Mixed s-alkylthiopropionic acid esters and polymers stabilized t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mixed s-alkylthiopropionic acid esters and polymers stabilized t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mixed s-alkylthiopropionic acid esters and polymers stabilized t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1975653