Abstract:
This invention relates to stable colorless concentrates and stock solutions of 1-5% crosslinked lower alkyl vinyl ether/maleic anhydride copolymers having a Brookfield viscosity of up to about 25,000 cps and to the process for their preparation.
Abstract:
The present invention relates to new stabilized compositions based on halogenated polymers and more specifically on chlorinated polymer. It relates more particularly to stabilized compositions based on chlorinated polymers, which are characterized in that they contain:a) an effective quantity of an organic zinc or cadmium compound,b) an effective quantity of an organic calcium, magnesium, barium or lanthanide compound, andc) an effective quantity of at least one essentially amorphous basic aluminum magnesium carbonate denoted by the formula (I):(MgO).sub.y.Al.sub.2 O.sub.3.(CO.sub.2).sub.x.(H.sub.2 O).sub.z (I).
Abstract translation:本发明涉及基于卤化聚合物的新型稳定化组合物,更具体地涉及氯化聚合物。 它更具体地涉及基于氯化聚合物的稳定化组合物,其特征在于它们包含:a)有效量的有机锌或镉化合物,b)有效量的有机钙,镁,钡或镧系元素化合物, 和(c)有效量的由式(I)表示的至少一种基本上无定形的碱式碳酸铝镁:(MgO)y.Al 2 O 3。(CO 2)x。(H 2 O)z(I)。
Abstract:
A polyethylene terephthalate resin composition comprising a polyethylene terephthalate resin and from 0.1 to 3% by weight, based on the polyethylene terephthalate resin, of an aromatic compound of the formula: ##STR1##
Abstract:
Fluoroelastomer laminates having one layer of perfluoroelastomer with an ethylenically unsaturated hydrogen or perfluorophenyl and bromo- or iodo- cure site components and compounded with a K.sub.2 AF curing system and a second layer of peroxide-curable polymer compounded with a peroxide curing agent. The laminates exhibit excellent high temperature adhesion and oxidative and fluid resistance.
Abstract:
In accordance with the present invention, it has been found that the color and stability of basic alkali and alkaline earth metal salts prepared from mixtures containing a phenol can be improved by conducting the reaction in the absence of free oxygen and thereafter post-treating the reaction product with at least one compound capable of displacing the hydrogen of the phenolic hydroxyl groups present in the mixture while maintaining oxygen free atmosphere. Generally, the metal salts will be alkaline earth metal salts of phenols such as calcium and barium salts. A preferred example of the compound capable of displacing the hydrogen of the phenolic hydroxyl group is an epoxide such as ethylene oxide and propylene oxide.
Abstract:
Polyvinyl chloride resin compositions are provided, suitable for use as electrical insulation material, having a high volume resistivity and a high resistance to deterioration when heated at temperatures above 100.degree. C., comprising as the essential ingredients a polyvinyl chloride resin and, in the amounts indicated, in parts per one hundred of resin, from about 30 to about 100 parts mono or poly carboxylic acid ester plasticizer; from about 5 to about 25 parts filler; from about 1 to about 20 parts epoxy compound, and from about 1 to about 20 parts lead alkyl phenolate.
Abstract:
An additive composition for improving the color stability of a vinyl chloride polymer stabilized with environmentally acceptable stabilizers comprises dehydroacetic acid or its Na, K., Li, Mg, Zn, Ba, Ca, Sn, or Sr salt and an organic phosphite having the formula ##STR1## wherein R.sub.1 is a t-butyl or t-amyl group, R.sub.2 is a hydrogen atom or an alkyl group having one to five carbon atoms, R.sub.3 is a hydrogen atom or a methyl group, and each of R.sub.4 and R.sub.5 independently is a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms, an aryl group having 6 to 12 carbon atoms, or an ether-substituted group having 3 to about 50 carbon atoms and 1 to about 40 ether oxygen atoms.
Abstract:
An anti-yellowing additive is provided for environmentally acceptable stabilized vinyl chloride polymer compositions from which arsenic, beryllium, cadmium, lead, mercury, and thallium are substantially excluded, comprising at least one overbased sulfonate or phenolate compound of lithium, sodium, potassium, magnesium, calcium, strontium, barium, zinc, titanium, aluminum, zirconium, or tin, and a 1,3-diketone compound having 5 to 30 carbon atoms, which is a cyclic or open-chain 1,3-diketone or a lithium, sodium, potassium, magnesium, calcium, strontium, barium, zinc, aluminum, tin or zirconium salt thereof.
Abstract:
A stabilizer composition is disclosed that enhances the resistance to deterioration upon heating of vinyl chloride polymers. The stabilizer composition comprises (A) a metal salt of a sulfur-and nitrogen- free monocarboxylic acid or a phenol and (b) a metal salt of a phosphorous acid mono-ester in which the molar ratio of phosphorous acid mono-ester to metal is 1:1.Vinyl chloride polymer compositions stabilized with the above disclosed stabilizer composition are also disclosed.
Abstract:
The zinc or manganese salt of 3,5-di-tert-alkyl-4-hydroxybenzoic acid, in combination with either a 2-hydroxybenzophenone or a 2(2H-benzotriazol-2-yl)phenol ultraviolet absorber, provides a highly effective synergistic stabilizer system for TiO2-pigmented polymers.