The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 1980
Filed:
Feb. 28, 1978
Argus Chemical Corp., Brooklyn, NY (US);
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.