Kornel D Kiss

US Patent:

40656357, Dec 27, 1977

Filed:

Dec 16, 1975

Appl. No.:

5/641313

Inventors:

Kornel D. Kiss - Yonkers NY

Assignee:

Dart Industries, Inc. - Los Angeles CA

International Classification:

H01B 728

US Classification:

174 23R

Abstract:

The insulation of electrical cables which are utilized in environments likely to cause extraction of stabilizer systems is achieved through the use of compositions in which a disubstituted alkylhydroxyphenyl alkanoyl hydrazine is used as extraction resistant stabilizer for ethylene-propylene copolymer coating materials. Equivalent nomenclature for the preferred stabilizer is disubstituted di-t-butyl hydroxy hydro cinnamoyl (DTBHC) hydrazine. The DTBHC hydrazine is substantially the only stabilizer used in the stabilized compositions.

US Patent:

40497518, Sep 20, 1977

Filed:

Apr 26, 1976

Appl. No.:

5/680029

Inventors:

Frank Scardiglia - Woodcliff Lake NJ
Kornel Dezso Kiss - Yonkers NY

Assignee:

Dart Industries Inc. - Los Angeles CA

International Classification:

C08K 510
C08K 513
C08L 2312
C08F25502

US Classification:

260876R

Abstract:

A hindered phenolic antioxidant stablizer for polyolefins is rendered extraction resistant by complexing it with an agent containing complexing groups derived from N-vinyl-2-pyrrolidone or a N-dialkyl substituted amino alkyl ester of an. alpha. ,. beta. -unsaturated carboxylic acid.

US Patent:

40751465, Feb 21, 1978

Filed:

Jan 2, 1976

Appl. No.:

5/645982

Inventors:

Kornel Dezso Kiss - Yonkers NY

Assignee:

Dart Industries, Inc. - Los Angeles CA

International Classification:

C08K 509
C08K 510
C08K 525

US Classification:

260 23H

Abstract:

A polyolefin composition having excellent stability against degradation caused by exposure to heat and oxygen in the presence of copper, which composition is stabilized with a synergistic stabilizer system containing at least one phenolic antioxidant and calcium stearate.

US Patent:

39519112, Apr 20, 1976

Filed:

Nov 22, 1974

Appl. No.:

5/526085

Inventors:

Kornel D. Kiss - Yonkers NY

Assignee:

Dart Industries Inc. - Los Angeles CA

International Classification:

C08J 320

US Classification:

260 4585B

Abstract:

Propylene-based, normally solid polymer compositions are stabilized against oxidative degradation especially when exposed to both a metal such as copper and a soft hydrocarbon medium such as petrolatum. Highly synergistic levels of stability are achieved by combining in said polymer compositions three different stabilizer additives (a), (b) and (c) as follows: A. between about 0. 4 and about 1. 6% by weight of the tetraester of pentaerythritol with 3(3',5'-ditertiary butyl, 4'-hydroxy phenyl) propionic acid, B. between about 0. 1 and about 0. 4% by weight of N,N'" diacetyl N',N" adipoyl dihydrazide, and C. between about 0. 15 and about 0. 8% by weight of a linear polyester of 3,3' thiodipropionic acid with a glycol of the general formula HO--R--OH wherein R is a cycloalkylene or branched alkylene radical in which the carbon atom bonded to each --OH group is a primary carbon, Provided that the weight of (a) is substantially greater than that of either (b) or (c) and the weight of (c) is not less than about equal to that of (b). Preferably the weight of (c)> the weight of (b) and the weight of (a)> weight of (b)+(c).

US Patent:

40666107, Jan 3, 1978

Filed:

Jul 14, 1976

Appl. No.:

5/705233

Inventors:

Kornel Dezso Kiss - Yonkers NY
John Leslie Hugh Allan - Glen Rock NJ
Marvin Michael Fein - Westfield NJ

Assignee:

Dart Industries, Inc. - Los Angeles CA

International Classification:

C08K 522

US Classification:

260 4221

Abstract:

Polyolefins pigmented with copper phtalocyanine complexes are rendered stable against heat and oxidation by addition of a metal chelating agent.