New unsaturated polyester-based products

A ready to use unsaturated polyester resin alkyd, having an acid number in the 30 to 60 range, a viscous behavior at room temperature, a viscosity not exceeding 300,000 cps at 45.degree. C. and viscosity not exceeding 500 cps at 25.degree. C. when diluted with styrene to a content of 31% by weight, comprising the radical groups originating from the following classes of reacting components;

• (A) unsaturated acids and anhydrides;
• maleic anhydride and acid, fumaric acid, citraconic anhydride and acid, said prime materials being used either alone or mixed together to a total amount in the range of 0.4 to 1.0 moles range;
• (B) other dicarboxylic acids;
• aromatic dicarboxylic acids and anhydrides selected from phthalic anhydride and acid, iso-phthalic acid, terephthalic acid, tetrachlorophthalic anhydride and acid, etc.;
• saturated straight or branched chain dicarboxylic acids selected from propandioic, butandioic, adipic, azelaic, sebacic, dodecandioic acids and isomers of trimethyladipic acid;
• cycloaliphatic anhydrides and acids, selected from tetrahydrophthalic anhydride and acid, 1,4,5,6,7,7 hexachlorobicyclic anhydride and acid, 2,2,1 heptene 2,3 dicarboxylic anhydride and acid, etc.;
• (C) at least one polymeric glycol comprising molecules containing more than 90% moles of 1,2-propyleneoxide units, as obtained by polymerization of 1,2-propandiol either alone or with less than 10% moles of other glycols;
• (D) other glycols;
• saturated straight or branched aliphatic and cycloalkphatic glycols selected from ethylene, 1,2 propylene, 1,3 butylene, diethylene glycols, polyethylenics, 1,6 hexandiol, isomers of trimethyl hexandiol and dibromoneopentyl glycol;
• arylaliphatic glycols selected from 1,1' isopropylidene-bis-(p-phenyloxy)-dipropanol and 1,1' isopropylidene-bis-(p-phenyloxy)-diethanol;
• unsaturated aliphatic glycols selected from 1,2 butene, 3,4 diol and 2,3 butene, 1,4 diol;
• there being always present at least one component selected from class (A) above and at least one component selected from class (C) above.

A ready to use unsaturated polyester resin alkyd, having an acid number in the range of 30 to 60 range, a viscous behavior at room temperature, a viscosity not exceeding 300,000 cps at 45.degree. C. and viscosity not exceeding 500 cps at 25.degree. C. when diluted with styrene to a content of 31% by weight, comprising the radical groups originating from the following classes of reacting components:

• (A) unsaturated acids and anhydrides;
• maleic anhydride and acid, fumaric acid citraconic anhydride and acid, said prime materials being used either alone or mixed together to a total amount in the 0.4 to 1.0 moles range;
• (B) other dicarboxylic acids;
• aromatic dicarboxylic acids and anhydrides selected from phthalic anhydride and acid, isophthalic acid, terephthalic acid, tetrachlorophthalic anhdride and acid;
• saturated straight or branched chain dicarboxylic acids, selected from propandioic, butandioic, adipic, azelaic, sebacic, dodecandioic acids and isomers of trimethyladipic acid;
• cycloaliphatic anhydrides and acids selected from tetrahydrophthalic anhydride and acid, 1,4,5,6,7,7 hexachlorobicyclic anhydride and acid, 2,2,1 heptene 2,3 dicarboxylic anhydride and acid;
• (C) dipropyleneglycol;
• (D) other glycols;
• saturated straight or branched aliphatic and cycloaliphatic glycols selected from ethylene, 1,2 propylene, 1,3 butylene, diethylene glycols, polyethylenics, 1,6 hexandiol, isomers of trimethyl hexandiol and dibromoneopentyl glycol;
• arylaliphatic glycols selected from 1,1' isopropylidene-bis-(p-phenyloxy)-di-propanol and 1,1' isopropylidene-bis-(p-phenyloxy)-diethanol;
• unsaturated aliphatic glycols selected from 1,2 butene, 3,4 diol and 2,3 butene, 1,4 diol;
• there being always present at least one component selected from class (A) above and at least said dipropylene glycol.