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6409937 |
Melt processible thermotropic liquid crystalline terpolyesters and process for the preparation thereof
The invention relates to a process for the preparation of melt processable liquid crystalline terpolyesters of the general formula I by the in situ acetylation of a monomer selected from...
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6187846 |
Thermally stabilized, pigmented, stereoregular, branched-mono-1-olefin polymer compositions
An additive composition is provided that comprises: (a) tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate; (b) bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite; and (c) a...
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5705549 |
Rubber compositions
A rubber composition comprises a particular copolymer containing isobutylene unit, a paramethylstyrene unit and a parabromomethylstyrene unit; natural rubber and/or diene synthetic rubber; carbon...
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5604276 |
Recording liquid and method for ink jet recording using same
A recording liquid comprises at least one of certain specified dyes carbon black, a water-soluble resin, a water-soluble organic solvent and water. The organic solvent includes polyhydric alcohol...
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5534569 |
Rubber composition
Heat generation of a rubber composition can be lowered by incorporating to the composition a compound of the formula, (I), (II) or (III), ##STR1## where A is an aromatic group, hydantoin ring or C...
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5384346 |
Polyvinyl butyrals having improved thermal stability and light resistance
Polyvinyl butyrals (PVBs) with improved thermal stability and improved light resistance contain as stabilizers polynuclear phenols which phenolic radicals have a quaternary carbon atom in the...
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5155151 |
Heat stable thermoplastic resin composition
A thermoplastic resin composition having improved heat stability which comprises a thermoplastic resin which contains at least 5% by weight of an α-alkyl-substituted aromatic copolymer comprising...
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4874803 |
Dianhydride coupled polymer stabilizers
The present invention comprises reaction products resulting from the reaction of hydrazido-substituted or certain amino-substituted polymer stabilizers and cyclic dianhydrides, as well as the use...
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4845146 |
Flame-retardant olefin polymer composition
A flame-retardant olefin polymer composition containing 100 parts by weight of a resin component, said resin component consisting essentially of the following (a) and (b): (a) 60-99% by weight...
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4618637 |
Polymer mixture which comprises a polyphenylene ether and a dihydrazide as a stabilizer
The invention relates to polymer mixtures which comprise a polyphenylene ether which have been stabilized with oxalyldihydrazide against oxidative degradation.
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4536527 |
Poly(butylene terephthalate) based molding resins
There is provided an improved molding resin capable of being molded into an article exhibiting reduced tendency to corrode a copper surface when the molded resin and the copper surface are placed...
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4506057 |
Stable latexes containing phosphorus surface groups
A phosphorus modified latex composition useful in the coating of substrates with inorganic fillers. A latex particle having phosphorus groups intimately bound to the particle's surface formed by...
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4447571 |
Stabilization of polyurethanes
A process for providing water based anionic polyurethanes having improved thermal oxidation color stability. Water dispersed amine salts of anionic prepolymers prepared from the reaction of...
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4446266 |
N,N'-Bis-salicyloyl-hydrazine as a metal deactivator
The invention relates to the use of N,N'-bis-salicyloyl hydrazine as a metal deactivator for organic materials which are in contact with copper or contain copper or copper ions, and has the object...
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4418170 |
Method for stabilizing organic polymers against oxidative decomposition
A method for stabilizing organic polymers against copper-catalyzed oxidative decomposition by means of N,N-bis-salicyloyl hydrazine as a metal deactivator is described wherein dust development of...
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4233209 |
Hindered phenol hydrazones and compositions stabilized therewith
Hindered phenol hydrazones of the formula ##STR1## wherein R 1 and R 2 are alkyl of 1 to 8 carbons or R 1 can also be hydrogen, n is 1 to 6, R' is hydrogen or alkyl, R 3 is alkyl, phenyl,...
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4162247 |
Bis-(alkylphenyl)-alkanecarboxylic acid hydrazides, their preparation and use
Bis-(alkylphenol)-alkanecarboxylic acid hydrazides are obtained by reaction of bisphenol-alkanecarboxylic acid chlorides, azides, anhydrides or esters with hydrazine hydrate, at a temperature of...
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4147689 |
Trifunctional antioxidant for polyolefins
Bis(alkylhydroxyphenylacyl) 3,3'-thiadicarboxylic acid dihydrazides are useful thermal antioxidants for polyolefins, and provide in a single compound the primary antioxidant, secondary antioxidant...
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4087405 |
Polyhydrazides as stabilizers for polyolefins
Polyhydrazides of 3,3'-thiodipropionylhydrazide and bis(acid chlorides) are useful as hydrogen peroxide decomposers and copper deactivators for the thermooxidative stabilization of polyolefins.
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4073771 |
Stabilized polymeric composition and product using same
The condensation products of oxalyl dihydrazide and 3,5-di-tertiary-butyl-4-hydroxy aryl carbonyl compounds are found to stabilize polyethylene against oxidative degradation. Stabilizer...
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4038247 |
Stabilizing polyolefins with diacyl dihydrazides
A process for stabilizing homo- or copolymeric polyolefins, especially polypropylene, with certain symmetrical or asymmetrical diacyl dihydrazides is disclosed, said diacyl dihydrazides possessing...
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4035325 |
Use of organometallic salts and metal deactivators as flame retardants for polyolefins
The effectiveness of combinations comprising an antimony compound and a halogen-containing compound for reducing the flammability of polyolefins is increased significantly by the addition of...
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4013618 |
Thermally stabilized polyester-polyether block copolymer composition
A polyester-polyether block copolymer composition being very stable even in the presence of heavy metals, which comprises a polyester-polyether block copolymer consisting of segments of polyester...
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4012360 |
Bis-salicyloyl-dicarboxylic acid dihydrazides as stabilizers for polyolefines
New bis-salicyloyl-dicarboxylic acid dihydrazides are stabilizers for polyolefines. They are prepared by reacting a salicylic acid hydrazide with a dicarboxylic acid chloride or a dicarboxylic acid...
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3991131 |
Azidoformyl antioxidants
Azidoformyl compounds containing a hindered phenolic antioxidant moiety have been found to provide built-in antioxidant protection. They add to and protect polymers, including saturated,...
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3978156 |
Color stabilized polyurethanes
Polyurethanes exposed to degradative atmospheric conditions, particularly ultraviolet light, have improved resistance to such degradation when the polyurethanes contain small amounts of polymeric...
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3970716 |
Flame resistant thermoplastic blend
Thermoplastic blends of polyurethane polymers, chlorinated polyethylene polymer, optionally polyethylene resins and antimony trioxide, and a flame retardant selected from...
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3954904 |
Stabilized polyphenylene ether resin composition
Polyphenylene ether resins are stabilized with a substituted dicarboxylic acid dihydrazide.
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3948854 |
Salicylic acid hydrazide stabilizers for polymers
Compounds of the formula ##SPC1## In which R 1 denotes hydrogen, alkyl with 1-8 carbon atoms, alkenyl with 3 or 4 carbon atoms, cycloalkyl with 5-8 carbon atoms, aralkyl with 7-9 carbon atoms,...
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3940365 |
Moulding composition based on poly(oxymethylene)
Polyacetals can be stabilized by means of a stabilizing composition, one of its components acting concurrently as a nucleating agent. Linear oxymethylene-polymers are used as polyacetals. The...
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3357944 |
Stabilization of synthetic organic polymeric substances with oxalobis
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3787355 |
Title is not available
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