Patent GB-1090266-A (GB)
Title: Polyesters
IPC: C08L23/02
Filed: 1964-09-15
Abstract: Paraffin wax is stabilized with a monohydric alcohol terminated linear polyester of molecular weight 500-4000 containing the residues of (a) 3,31-thiopropionic acid or 4,41-thiodibutyric acid (h) a glycol and (3) lauryl alcohol, 2:2-dimethyl decanol or stearyl alcohol.  As additional stabilizers phenolic antioxidants may be used and the latter may contain, in addition to the phenolic hydroxyl groups, salicylate or other ester groups, carboxy groups, alkyl carbonyl groups, alkoxy groups, secondary or tertiary amino groups, amido groups or sulphide or ether linkages.ALSO:New monohydric alcohol terminated linear polyesters of molecular weight 500-4000 are made by reacting (a) 3,31-thiodipropionic acid or 4,41-thiodibutyric acid or esters thereof, (b) a glycol, and (c) lauryl alcohol, 2:2-dimethyl decanol or stearyl alcohol.  The glycol may be ethylene glycol, 1:3-propylene glycol, 1:4-butanediol, 1:5-pentanediol, 1:6-hexanediol, 1:10-decanediol neopentyl glycol, 2:2-diethylpropanediol - 1:3, 2 - ethyl - 2 - butylpropanediol - 1:3, 2 - ethyl - 2 - propylpropanediol - 1:3, 2 - ethyl - 2 - methylpropanediol - 1:3, 2:2:4 - trimethylhexanediol- 1:6, diethylene glycol, triethylene glycol, b ,b 1 - thiodiethanol, 1:2 - a ,a 1 - xylenediol, 1:3 - a ,a 1 - xylenediol, 1:4 - a ,a 1 - xylenediol, or 1:1-, 1:2-, 1:3- or 1:4-cyclohexanedimethanol. The polyesters may be used as stabilizers, e.g. for fats or fatty oils, hydrocarbons, natural resins, rubbers, cellulose esters, polyesters, polycarbonates, polyurethanes, polyamides and olefin polymers and copolymers.  The latter are preferably (i) polymers of one or more C2- 22 olefins or mixtures thereof with isoprene, butadiene, styrene or acrylates, or (ii) admixtures of polyolefins and polyamides, polyesters or synthetic rubbers. The stabilized composition may also contain phenolic antioxidants which act synegistically with the polyesters.  The antioxidants, in addition to their phenolic hydroxyl groups may contain salicylate or other ester groups, carboxy groups, alkyl carbonyl groups, alkoxy groups, secondary or tertiary amino groups, amido groups or sulphide or ether linkages. In examples, the polyesters are used to stabilize paraffin wax, polypropylene, polybutene-1, a 90/10 propylene/butene-1 copolymer and a propylene polyuleomer containing isoprene.ALSO:New monohydric alcohol terminated linear polyesters of molecular weight 500-4000 are made by reacting (a) 3,31-thiodipropionic acid or 4,41-thiodibutyric acid or esters thereof, (b) a glycol and (c) lauryl alcohol, 2:2-dimethyl decanol or stearyl alcohol.  The glycol may be ethylene glycol, 1:3-propylene glycol, 1:4-butanediol, 1:5-pentanediol, 1:6-hexanediol, 1:10-decanediol, neopentyl glycol, 2:2-diethylpropanediol - 1:3, 2 - ethyl - 2 - butylpropanediol - 1:3, 2 - ethylpropanediol - 1:3, 2-ethyl - 2 - methylpropanediol - 1:3, 2:2:4-trimethylhexanediol-1:6, diethylene glycol, triethylene glycol, b ,b 1-thiodiethanol, 1:2-, 1:3- or 1:4-a ,a 1-xylenediol, or 1:1-, 1:2-, 1:3-, or 1:4-cyclohexanedimethanol.  The esters are used for stabilizing fats or fatty oils, hydrocarbons, rubbers or natural or synthetic resins.