摘要:
New polyhydric phenol coesters are disclosed of polyhydric phenols, having 2 to 3 phenolic hydroxyl groups and 1 to 3 benzenoid rings, with carbonic acid and an inorganic acid which can be phosphorous acid, phosphoric acid, and boric acid. The new coesters have molecular weights from 700 to about 10,000, preferably from 1200 to 7000, and are highly effective stabilizers for a variety of synthetic resins.Stabilizer compositions comprising a polyhydric phenol coester and a known polymer stabilizer, as well as synthetic resins stabilized with such stabilizer compositions, are also disclosed.
摘要:
Poly(piperidylamine) alkanes represented by the Formula (I) or (II): ##STR1## and synthetic resin compositions having improved resistance to deterioration by light containing such compounds.
摘要:
Bis-(2,2,6,6-tetramethyl-piperidyl)diimides are provided, having the formula: ##STR1## in which R is selected from the group consisting of hydrogen; oxyl; alkyl and alkenyl having from one to about eighteen carbon atoms; epoxy and hydroxyalkyl having from two to about eight carbon atoms; acyl having from two to about eight carbon atoms; and phenalkyl having from seven to about twelve carbon atoms; and Z is a tetravalent aliphatic or cycloaliphatic hydrocarbon group having from two to about eighteen carbon atoms; and stabilizer and synthetic polymer compositions containing such diimides having improved resistance to deterioration when exposed to light.
摘要:
N,N',N"-tris((2,2,6,6-tetramethyl-4-piperidyl)triazinyl) undecane triamines are provided having the formula: ##STR1## wherein: X is selected from the group consisting of ##STR2## in which: R is selected from the group consisting of hydrogen; oxyl O'; alkyl having from one to about eighteen carbon atoms; hydroxyalkyl having from two to about eight carbon atoms; epoxyalkyl having from three to about eight carbon atoms; alkaryl having from seven to about twelve carbon atoms; and acyl having from one to about eight carbon atoms;Y is O or NR.sub.2 ;R.sub.1 is alkyl having from one to about six carbon atoms; andR.sub.2 is hydrogen or alkyl having from one to about eighteen carbon atoms;as well as stabilizer compositions and stabilized synthetic polymer compositions containing the same having improved resistance to deterioration upon exposure to light.
摘要:
2,6-Di-tertiary butyl phenyl phosphites are provided having the structure ##STR1## as well as synthetic resin compositions having an enhanced resistance to deterioration by heat and/or light due to the presence of an organic phosphite of this class.
摘要:
Hindered bis-phenol phenyl phosphites are provided having the structure: ##STR1## wherein: R is selected from the group consisting of alkyl having from one up to about eighteen carbon atoms; cycloalkyl having from three up to about twelve carbon atoms; alkaryl and aryl having from six to about eighteen carbon atoms; preferably, a bulky group such as iso, secondary or tertiary alkyl having from three to about ten carbon atoms; or cycloalkyl having six to twelve carbon atoms;R.sub.1 and R.sub.2 are each selected from the group consisting of hydrogen; alkyl having from one to about eighteen carbon atoms; cycloalkyl having from three up to about twelve carbon atoms; alkaryl and aryl having from six to about eighteen carbon atoms; and are preferably in a position ortho to a phenolic hydroxyl or phenoxy group, if available;R.sub.3 is alkylene having from one to about six carbon atoms;R.sub.4 is selected from the group consisting of alkylene, cycloalkylene, and aralkylene, the residue of a monohydric or polyhydric alcohol, having from one to about eighteen carbon atoms, and from none to three hydroxyl groups (originally one to four hydroxyl groups);Y is selected from the group consisting of a direct carbon to carbon bond; thio sulfur --S--; oxy oxygen --O--; alkylidene having from one to about six carbon atoms; and cycloalkylidene having from four to about eight carbon atoms; andn is 1, 2, 3, or 4, according to the valence of R.sub.4 ; as well as synthetic resin compositions having an enhanced resistance to deterioration by heat and/or light due to the presence of an organic phosphite of this class.
摘要:
Stabilizer compositions are provided to increase the resistance of a synthetic resin to deterioration upon heating, comprising in combination (A) a thiodipropionic acid ester of a dihydric alcohol having 2 to 20 carbon atoms and an alcohol or carboxylic acid chain terminator having 1 to 21 carbon atoms, and (B) a 700 to about 10,000 molecular weight ester of a polyhydric phenol with carbonic acid or with carbonic acid and another acid which can be an aliphatic dicarboxylic acid, phosphorous acid, phosphoric acid, boric acid, or an organophosphonic acid.Synthetic resins that can be stabilized with composition of the invention include polymers of alpha-olefins having 2 to 6 carbon atoms, vinyl chloride polymers, acrylonitrile-butadiene-styrene polymers, and terephthalic acid ester polymers.
摘要:
This invention relates to a new class of phenolic compounds containing a phosphorus acid ester group which are stabilizers for synthetic resins and to synthetic resin stabilizer compositions comprising these phenolic compounds as well as to synthetic resins stabilized with such phenolic compounds and with stabilizer compositions comprising these phenolic compounds along with known polymer stabilizers.
摘要:
A composition for enhancing and maintaining mechanical properties such as tensile strength of an ethylene polymer on heating at elevated temperature comprises (A) an initiator of cross-linking having a half-life measured at 110.degree. C. of 0.1 to 50 hours and (B) an alkylthioalkylenecarboxylic acid ester of a polycarbocyclic polyhydric phenol.