Unsaturated polyester compositions and thermoset articles prepared therefrom

Claim 2

A STABLE, THERMOSETTABLE COMPOSITION SUITABLE FOR PREPARING IMPACT RESISTANT REINFORCED PLASTIC ARTICLES WHICH COMPRISES A MIXTURE OF ABOUT 85 TO 95 WEIGHT PERCENT OF A POLYMERIZABLE RESIN WHEREIN SAID RESIN COMPRISES ABOUT 25 TO 70 WEIGHT PERCENT OF AN UNSATURATED POLYESTER OF A DICARBOXYLIC ACID AND A POLYOL AND ABOUT 75 TO 30 WEIGHT PERCENT OF A COPOLYMERIZABLE VINYL MONOMER, AND ABOUT 15 TO 5 WEIGHT PERCENT OF A POLYDIENE RUBBER SELECTED FROM THE GROUP CONSISTING OF (A) A HOMOPOLYMER OF A CONJUGATED DIENE MONOMER OF A COPOLYMER OF TWO OR MORE CONJUGATED DIENE MONOMERS HAVING AN INHERENT VISCOSITY OF ABOUT 0.75 TO 1.2 DECILITERS/GM AND (B) COPOLYMERS OF 30 TO 80 WEIGHT PERCENT OF A CONJUGATED DIENE AND 70 TO 20 WEIGHT PERCENT OF AT LEAST ONE OTHER COPOLYMERIZABLE MONOMER SELECTED FROM THE GROUP CONSISTING OF UNSATURATED NITRILE MONOMERS AND ALKENYL AROMATIC MONOMERS WHEREIN THE COPOLYMER HAS AN INHERENT VISCOSITY OF ABOUT 0.3 TO 1.2 DECILITERS/GM.

Claim 3

The composition of claim 1 wherein the viscosity of the copolymer is about 0.5 to 1.2 deciliters/gm.

Claim 4

The composition of claim 1 wherein the weight percent of said diene in the copolymer ranges from 40 to 70 percent.

Claim 5

The composition of claim 3 wherein said copolymer is a copolymer of 40 to 70 weight percent butadiene and 60 to 30 weight percent styrene.

Claim 6

The composition of claim 4 wherein said copolymer is a block copolymer.

Claim 7

The composition of claim 1 further containing an inert reinforcing material.

Claim 8

The composition of claim 1 further containing at least 15 parts of an inert filler per 100 parts of said resin and polydiene rubber.

Claim 9

A thermoset resin prepared by curing the composition of claim

Claim 10

A stable, thermosettable composition suitable for preparing impact resistant reinforced plastic articles which comprises a mixture of about 85 to 95 weight percent of a polymerizable resin, wherein said resin comprises about 25 to 70 weight percent of an unsaturated polyester of a dicarboxylic acid and a polyol and about 75 to 30 weight percent of a copolymerizable vinyl monomer; about 15 to 5 weight percent of a polydiene rubber selected from the group consisting of (a) a homopolymer of a conjugated diene monomer or a copolymer of two or more conjugated diene monomers having an inherent viscosity of about 0.75 to 2 deciliters/gm. and (b) copolymers of 30 to 80 weight percent of a conjugated diene and 70 to 20 weight percent of at least one other copolymerizable monomer selected from the group consisting of unsaturated nitrile monomers and alkenyl aromatic monomers wherein the copolymer has an inherent viscosity of about 0.3 to 2 deciliters/gm; and at least about 15 parts of an inert filler per 100 parts of said resin and rubber.

Claim 11

A stable, thermosettable composition suitable for preparing impact resistant reinforced plastic articles which comprises a mixture of about 85 to 95 weight percent of a polymerizable resin, wherein said resin comprises about 25 to 70 weight percent of an unsaturated polyester of a dicarboxylic acid and a polyol and about 75 to 30 weight percent of a copolymerizable vinyl monomer; about 15 to 5 weight percent of a polydiene rubber selected from the group consisting of (a) a homopolymer of a conjugated diene monomer or a copolymer of two or more conjugated diene monomers having an inherent viscosity of about 0.75 to 2 deciliters/gm. and (b) copolymers of 30 to 80 weight percent of a conjugated diene and 70 to 20 weight percent of at least one other copolymerizable monomer selected from the group consisting of unsaturated nitrile monomers and alkenyl aromatic monomers wherein the copolymer has an inherent viscosity of about 0.3 to 2 deciliters/gm; and at least about 15 parts of an inert filler per 100 parts of said resin and rubber.

Claim 12

The composition of claim 9 wherein said polydiene rubber is a copolymer of about 40 to 70 weight percent of said diene and about 60 to 30 weight percent of said copolymerizable monomer.

Claim 13

The composition of claim 9 wherein said polydiene rubber is a copolymer of about 40 to 70 weight percent butadiene and 60 to 30 weight percent styrene.

Claim 14

The composition of claim 11 wherein said copolymer is a block copolymer.

Claim 15

The composition of claim 9 where the viscosity of the copolymer is about 0.5 to 2 deciliters/gm.

Claim 16

The composition of claim 9 further containing an inert reinforcing material.

Claim 17

A thermoset resin prepared by curing the composition of claim 9.

Claim 18

A stable, thermosettable composition suitable for preparing impact resistant reinforced plastic articles which comprises a mixture of about 85 to 95 weight percent of a polymerizable resin wherein said resin comprises about 25 to 70 weight percent of an unsaturated polyester of a dicarboxylic acid and polyol and about 75 to 30 weight percent of a copolymerizable vinyl monomer, and about 15 to 5 weight percent of a block copolymer of 40 to 70 weight percent of a conjugated diene and about 60 to 30 weight percent of an alkenyl aromatic monomer, wherein said copolymer has an inherent viscosity of about 0.3 to 1.2 deciliters/gm.

Claim 19

A stable, thermosettable composition suitable for preparing impact resistant reinforced plastic articles which comprises a mixture of about 85 to 95 weight percent of a polymerizable resin wherein said resin comprises about 25 to 70 weight percent of an unsaturated polyester of a dicarboxylic acid and polyol and about 75 to 30 weight percent of a copolymerizable vinyl monomer, and about 15 to 5 weight percent of a block copolymer of 40 to 70 weight percent of a conjugated diene and about 60 to 30 weight percent of an alkenyl aromatic monomer, wherein said copolymer has an inherent viscosity of about 0.3 to 1.2 deciliters/gm.

Claim 20

The composition of claim 16 wherein said block copolymer is a butadiene/styrene copolymer.

Claim 21

The composition of claim 16 wherein the inherent viscosity is about 0.5 to 1.2 deciliters/gm.

Claim 22

The composition of claim 16 further containing an inert reinforcing material.

Claim 23

The composition of claim 16 further containing at least 15 parts of an inert filler per 100 parts of said resin and polydiene rubber.

Claim 24

A thermoset resin prepared by curing the composition of claim 16.

Claim 25

The composition of claim 16 further comprising a thermoplaStic polymer wherein the combined weight of said thermoplastic and said block copolymer comprises about 5 to 15 weight percent of said thermosettable composition and provided that said block copolymer comprises at least 5 weight percent of said composition.

Claim 26

The composition of claim 22 wherein said thermoplastic is polystyrene or polymethylmethacrylate.

Claim 27

A stable, thermosettable composition suitable for preparing impact resistant reinforced plastic articles which comprises a mixture of about 85 to 95 weight percent of a polymerizable resin wherein said resin comprises about 25 to 70 weight percent of an unsaturated polyester of a dicarboxylic acid and polyol and about 75 to 30 weight percent of a copolymerizable vinyl monomer; about 15 to 5 weight percent of a block copolymer of 40 to 70 weight percent of a conjugated diene and about 60 to 30 weight percent of an alkenyl aromatic monomer, wherein said copolymer has an inherent viscosity of about 0.3 to 2 deciliters/gm; and at least about 15 parts of an inert filler per 100 parts of said resin and said block copolymer.

Claim 28

A stable, thermosettable composition suitable for preparing impact resistant reinforced plastic articles which comprises a mixture of about 85 to 95 weight percent of a polymerizable resin wherein said resin comprises about 25 to 70 weight percent of an unsaturated polyester of a dicarboxylic acid and polyol and about 75 to 30 weight percent of a copolymerizable vinyl monomer; about 15 to 5 weight percent of a block copolymer of 40 to 70 weight percent of a conjugated diene and about 60 to 30 weight percent of an alkenyl aromatic monomer, wherein said copolymer has an inherent viscosity of about 0.3 to 2 deciliters/gm; and at least about 15 parts of an inert filler per 100 parts of said resin and said block copolymer.

Claim 29

The composition of claim 24 wherein said block copolymer is a butadiene/styrene copolymer.

Claim 30

The composition of claim 24 wherein the inherent viscosity is about 0.5 to 2 deciliters/gm.

Claim 31

The composition of claim 24 further containing an inert reinforcing material.

Claim 32

The composition of claim 24 further comprising a thermoplastic polymer wherein the combined weight of said thermoplastic and said block copolymer comprises about 5 to 15 weight percent of said thermosettable composition and provided that said block copolymer comprises at least 5 weight percent of said composition.

Claim 33

The composition of claim 28 wherein said thermoplastic is polystyrene or polymethylmethacrylate.

Claim 34

A thermoset resin prepared by curing the composition of claim 24.