Gerry P MackFlushing, NY

4058543, Nov 15, 1977

Jan 2, 1976

5/646310

Gerry P. Mack - Jackson Heights NY

C08K 558
C08K 536

260 4575S

Organotin mercapto dicarboxylic acid esters are provided having either substantially no odor or a remarkably low odor, and capable of imparting to polyvinyl chloride resin compositions when heated at elevated temperatures an enhanced resistance to early discoloration as well as an enhanced resistance to long term discoloration, without any obnoxious mercaptide odors. A process is provided for preparing organotin mercapto carboxylic acid esters by reaction of a monohydric alcohol or mixed monohydric alcohol-glycol mercapto dicarboxylic acid ester with an organotin oxide or halide, and then, if the mercapto dicarboxylic acid ester is of a monohydric alcohol only, transesterifying this reaction product with a glycol. Polyvinyl chloride resin compositions are also provided containing such organotin mercapto carboxylic acid esters, and having an enhanced resistance to both early and long term discoloration, without any obnoxious mercaptide odor.

4172207, Oct 23, 1979

Feb 22, 1977

5/770823

Gerry P. Mack - Jackson Heights NY

C07C14800
C07C14920

560147

A process is provided for the preparation of mercaptoalkane 1,2-dicarboxylic acid esters from readily available starting materials such as hydrogen sulfide and unsaturated alkene 1,2-dicarboxylic acid compounds. Isolation of the intermediate mercaptoalkanedicarboxylic acid can be avoided when a mercaptoalkanedicarboxylic acid ester is the desired product.

4041014, Aug 9, 1977

Jul 30, 1973

5/384025

Gerry P. Mack - Jackson Heights NY

M&T Chemicals Inc. - Greenwich CT

C08K 558

260 4575S

Polyvinyl chloride compositions suitable for use as food packaging materials are stabilized against the degradative effects of heat using a mixture of di-n-octyltin-S,S'-bis(isooctyl mercaptoacetate) and an oligomeric form of di-n-octyltin maleate wherein the weight ratio of the two component stabilizers is between 1:3 and 4:1, respectively. The combination of stabilizers imparts a greater degree of stabilization than can be achieved using either component at a concentration equal to that of the mixture, as evidenced by a delay in the appearance of severe discoloration during exposure to temperatures of 250. degree. C. and higher.

4269731, May 26, 1981

Aug 27, 1979

6/069959

Gerry Mack - Jackson Heights NY

Argus Chemical Corporation - Brooklyn NY

C09K 1512
C08K 509
C08K 536

252400R

Antimony mercaptocarboxylic acid esters are provided having the formula: ##STR1## wherein: R. sub. 1 is selected from the group consisting of hydrogen, alkyl having from one to about eighteen carbon atoms and alkylene linked with R. sub. 2 in a ring having from three to about eight carbon atoms; R. sub. 2 is selected from the group consisting of alkyl having from one to about eighteen carbon atoms, phenyl, and alkylene linked with R. sub. 1 in a ring having from three to about eight carbon atoms; R. sub. 3 is selected from the group consisting of hydrogen and alkyl having from one to three carbon atoms; R. sub. 4 is selected from the group consisting of alkyl, aryl, alkylaryl, alkoxycarbonyl-alkylene and acyloxyalkylene having from three to about twenty carbon atoms, the alkylene having from two to about six carbon atoms; R. sub. 5 is selected from the group consisting of alkylene and cycloalkylene having from one to about eighteen carbon atoms, and such groups having from one to four hydroxyl groups; Z is a bivalent alkylene group having from one to five carbon atoms and carrying the sulfur in a position alpha or beta to -OOC-; and n is a number from 1 to 3. A process for preparing such antimony compounds is also provided, as well as predecessor intermediates, and stabilizer compositions for polyvinyl chloride resin compositions comprising such antimony compounds, if desired with other polyvinyl chloride resin stabilizers.

4668722, May 26, 1987

Dec 13, 1985

6/808340

Gerry P. Mack - Jackson Heights NY

C08K 534
C08K 551
C07D40114
C07D21132

524103

New hindered piperidinoalcohol 1,1,1-trioxyalkanes are disclosed. In the 1,1,1-trioxyalkanes, at least on 1,1,1-trioxyalkane group is linked to the residue of an alcohol linked to the 4-position of a 2,2,6,6-tetraalkylpiperidine compound having 12 to 75 carbon atoms. For each 1,1,1-trioxalkane group, there are 1 to 3 tetraalkylpiperidine groups. The alkyl groups linked to the piperidine ring have from one to five carbon atoms each. The fourth substituent on the carbon atom of the 1,1,1-trioxyalkane is a hydrogen atom or an aliphatic group having one to five carbon atoms. The disclosed 1,1,1-trioxyalkanes protect a variety of synthetic resins against the deteriorative effects of exposure to actinic light. Stabilizer compositions comprising a disclosed 1,1,1-trioxyalkane and a known polymer stabilizer, as well as synthetic resin compositions stabilized with such stabilizer compositions, are also disclosed.