Ronald Edward MacLeay - Williamsville NY Chester Stephen Sheppard - Tonawanda NY Harold Carl Lange - Grand Island NY
Assignee:
Pennwalt Corporation - Philadelphia PA
International Classification:
C07C10702 B01J 2724 C08J 900 C08G 6312
US Classification:
260192
Abstract:
Tertiary-aliphatic alpha-peroxyazo compounds represented by the structure ##STR1## processes for preparing these compounds by reacting ##STR2## with salts or salt solutions of HOOH (III), (r"). sub. 3 cooh (iv), ##STR3## and the use of these novel compounds as polymerization initiators for vinyl monomers and as curing agents for resins. For example, 2-t-butylazo-2-(t-butylperoxy)-propane is prepared by reacting the potassium salt of t-butyl-hydroperoxide with 2-t-butylazo-2-chloropropane; and the product is used to cure unsaturated polyester resin at room temperature and to polymerize vinyl chloride at 20. degree. -30. degree. C.
Ronald E. MacLeay - Williamsville NY Chester S. Sheppard - Kenmore NY
Assignee:
Pennwalt Corporation - Philadelphia PA
International Classification:
C07C10702 C07C10706 C08F 404
US Classification:
260192
Abstract:
An unsymmetrical azo compound having the formula ##STR1## is provided wherein R" is an alkyl or aralkyl and R. sub. 3 and R. sub. 4 are hydrogen or aliphatic. The compound is useful as a vinyl polymerization initiator, a polyester resin curing agent and a blowing agent for foamed plastics.
Symmetrical Bis(Unsymmetrical Tertiary-Alkyl And Tertiary- Aralkyl Azo) Compounds
Ronald Edward Mac Leay - Williamsville NY Chester Stephen Sheppard - Tonawanda NY
Assignee:
Pennwalt Corporation - Philadelphia PA
International Classification:
C08L 3102 C08L 2508 C09B 3102 C09B 2922
US Classification:
260885
Abstract:
Novel symmetrical bis(unsymmetrical t-alkyl and t-aralykl azo) compounds of the general formula I: R -- N = N -- R. sub. 12 -- N = N -- R' (I) wherein R = R' = (R"). sub. 3 C--, e. g. , 1,2-ethylene bis(4-t-butylazo-4-cyanovalerate); and the use of I for sequential generation of free radicals, e. g. styrene monomer and 1,2-ethylene bis(4-t-butylazo-4-cyanovalerate) are reacted to obtain polystyrene containing attached azo groups which in turn is reacted with methyl methacrylate monomer to obtain a block copolymer of polystyrene and poly(methyl methacrylate).
Ronald Edward MacLeay - Williamsville NY Chester Stephen Sheppard - Tonawanda NY
Assignee:
Pennwalt Corporation - Philadelphia PA
International Classification:
C07C10702
US Classification:
260192
Abstract:
Novel t-aliphatic. alpha. -(sulfo) azo compounds: ##EQU1## and the use of compounds I as polymerization initiators for vinyl monomers and as curing agents for resins. For example, 2-t-butylazo-2-thiophenoxy-4-methylpentane, prepared by reacting a solution of thiophenol and sodium hydroxide in methanol with 2-t-butylazo-2-chloro-4-methylpentane at 10. degree. - 15. degree. C. , is used to cure an unsaturated polyester-styrene resin at 115. degree. C. and to polymerize styrene at 115. degree. C.
Antonio Joseph D'Angelo - Englishtown NJ Orville Leonard Mageli - Kenmore NY Chester Stephen Sheppard - Kenmore NY
Assignee:
Pennwalt Corporation - Philadelphia PA
International Classification:
C07C17918 C07C17920
US Classification:
260471C
Abstract:
A new class of compounds: R--W--R' were R and R' are identical oxy radicals containing peroxide functions such as dialkyl or diaralkyl peroxide, peroxyketal, peroxyester, or monoperoxycarbonate, and W is a carbonyl group, or carbonyl containing group, or an alkylidene or aralkylidene group, or a phosphorus containing group. Examples Di[1,3-dimethyl-3-(t-butylperoxy)butyl]carbonate; Di[1,3-dimethyl-3-(n-butoxycarbonylperoxy)butyl]carbonate; 2,2-Bis[3,3-di(t-butylperoxy)butoxy]propane; Di[1,3-dimethyl-3-(t-butylperoxy)butyl]ethyl phosphate. They are free radical affording compounds useful in crosslinking of polyolefins and unsaturated polymers, and for the polymerization of vinyl monomers and diolefinic monomers.
Polymerization Of Ethylenically Unsaturated Monomers Employing Catalyst Of Aliphatic .Alpha.-(Hydroperoxy)Azo Compounds And Salts Thereof
Ronald Edward MacLeay - Williamsville NY Chester Stephen Sheppard - Tonawanda NY
Assignee:
Pennwalt Corporation - Philadelphia PA
International Classification:
C08F 400 C08F 404 C08F 1406
US Classification:
526219
Abstract:
New aliphatic azo compounds containing an. alpha. -hydroperoxy group and the alkali metal and alkaline earth metal salts thereof as represented by the general structure ##STR1## processes for preparing I where M is H and R is t-aliphatic by reacting t-aliphatic azo compounds having an. alpha. -halo substituent with about an equimolar amount of sodium or hydrogen peroxide; processes for converting I where M is H to its alkali or alkaline earth metal salt by reaction with aqueous solutions of the corresponding base or with calcium or sodium hydride; and the use of these novel compounds as polymerization initiators for vinyl monomers and as curing agents for resins. For example, 2-t-butylazo-2-hydroperoxy-4-methylpentane is prepared from sodium peroxide and 2-t-butylazo-2-chloro-4-methylpentane and used to polymerize vinyl chloride and to cure unsaturated polyester resin.
Azo Compounds Containing Acylating Function And Azo Containing Polymers
Chester Stephen Sheppard - Tonawanda NY Ronald Edward MacLeay - Williamsville NY
Assignee:
Pennwalt Corporation - Philadelphia PA
International Classification:
C08G 6368
US Classification:
528292
Abstract:
A. A novel class of azo compounds R-N. dbd. N-R. sub. 1 where R and/or R. sub. 1 are groups containing an acylating function, e. g. , acyl chloride, chloroformate or anhydride. Example: Cis-4,4'-Azobis-(4-cyanovaleryl chloride). B. a novel class of azo containing polymers (R'--N. dbd. N--C(R. sub. 2)(R. sub. 2 ') --R. sub. 2 "--Y). sub. m --E--(Z). sub. n wherein R' is t-aliphatic, formed by reacting a polymer having at least one group reactive with an acyl group and a compound as in "A" containing only one acylating function. Example: the reaction product of 4-t-butylazo-4-cyanovaleryl chloride and hydroxyl terminated polybutadiene liquid resin. C. a novel class of azo containing polymers Z(E--Y--R. sub. 2 "--C(R. sub. 2)(R. sub. 2 ')--N. dbd. N--C(R. sub. 2)(R. sub. 2 ')--R. sub. 2 "--Y). sub. m' --E--Z, formed by the reaction of a compound as in "A" having two acylating functions with (1) a monomer having two acyl-reactive groups and a monomer having two acylating functions, or (2) a polymer having at least one acyl-reactive group. D.
Azo Free Radical Initiators Containing Ultraviolet Light Stabilizing Groups
Chester S. Sheppard - Buffalo NY Ronald E. MacLeay - Buffalo NY
Assignee:
Pennwalt Corporation - Philadelphia PA
International Classification:
C07C10702
US Classification:
260192
Abstract:
Compounds which contain azo linkages as well as the radical of an ultraviolet light stabilizing group are described. These compounds function as polymerization initiators which cause an ultraviolet light stabilization group to be chemically bound to the polymer.
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