Thiolcarbonate ester stabilizers

Details Thiolcarbonate ester stabilizers Thiolcarbonate ester stabilizers

1978-02-28

1980-04-22

Hoke, Veronica P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

26055B, 252404, C07C15400, C07C15402, C08K 538

Patent

active

041994957

ABSTRACT:
New thiolcarbonate esters are disclosed, having a molecular weight from 400 to 5,000 perferably from 600 to 1500, and containing 3 to 20 percent by weight thiolcarbonate sulfur. The thiolcarbonate esters are represented by the formula ##STR1## in which R is a hydrogen atom, an aliphatic hydrocarbon group having 1 to 22 carbon atoms, a cycloaliphatic hydrocarbon group having 5 to 22 carbon atoms, or an aromatic hydrocarbon group having 6 to 22 carbon atoms; R' is an alkylene group having 1 to 3 carbon atoms; A is the residue of a polyhydroxy compound having 2 to 4 carbon atoms and 2 to 4 hydroxy groups, provided that the number of hydroxy groups does not exceed the number of carbon atoms; Q is ##STR2## Where X individually at each occurrence is a hydrogen atom or ##STR3## k has the same value at each occurrence and is zero or 1; m is a whole number from 1 to 3; n is a whole number from 0 to 2 and p is a number from 0 to 10.
The thiolcarbonate esters are highly effective stabilizers for a variety of synthetic resins.
Stabilizer compositions comprising a thiolcarbonate ester and a known polymer stabilizer, as well as synthetic resins stabilized with such stabilizer compositions, are also disclosed.

REFERENCES:
patent: 3786155 (1974-01-01), Cousserans et al.

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