Water-based container end sealing compositions

Claim 2

An aqueous-based sealent composition which is characterized by (a) being adapted for use as a container end sealant, (b) being substantially free of volatile organic solvent, (c) having a Brookfield viscosity of about 2,800 to 12,000 cps., (d) being thixotropic, (e) being settable under air-drying conditions and at ambient temperatures, (f) being resistant to sag during setting, and (g) being substantially stable, and having at least about 65% by weight of total solids essentially consisting of (i) about 15.2 to 23.4 parts of weight of synthetic, elastomeric, high molecular weight, acrylonitrile-butadiene copolymer with a predominance, on a weight basis, of butadiene, and (ii) about 39 to 24.2 parts by weight of synthetic, elastomeric, high molecular weight, isobutylene-isoprene copolymer with a predominance, on a weight basis, of isobutylene, and (iii) small, substantially uniformly dispersible particles of compatible, thixotropic, mineral flow control agent which imparts thixotropic and thickening characteristics to the sealant composition, and having volatile liquid vehicle for said solids essentially consisting of water.

Claim 3

The aqueous-based sealant composition of claim 1, wherein said flow control agent comprises siliceous material.

Claim 4

The aqueous-based sealant composition of claim 1, wherein said flow control agent comprises aluminum silicate.

Claim 5

The aqueous-based sealant composition of claim 1, wherein said flow control agent comprises a mixture of aluminum silicate fumed silica.

Claim 6

The aqueous-based sealant composition of claim 1, wherein said composition has a Brookfield viscosity of about 6,000 to 10,000 cps.

Claim 7

The aqueous-based sealant composition of claim 1, wherein said composition has said acrylonitrile-butadiene and isobutylene-isoprene copolymers in a weight ratio of about 15.2 to 23.4::about 39 to 24.4.

Claim 8

The aqueous-based sealant composition of claim 1, wherein said composition has said acrylontrile-butadiene and isobutylene-isoprene copolymers in a weight ratio of about 17.1 to 21.5::about 35.8 to 27.4.

Claim 9

The aqueous-based sealant composition of claim 1, wherein said composition has about 65 to 72.5% by weight of total solids and about 35 to 27.5% by weight of water.

Claim 10

The aqueous-based sealant composition of claim 1, wherein the pH thereof is about 7 to 10.

Claim 11

An aqueous-based sealant composition which is characterized by (a) being adapted for use as a container end sealant, (b) being substantially free of volatile organic solvent, (c) being thixotropic, (d) having a Brookfield viscosity of about 2,800 to 12,000 cps., and (e) being settable under air-drying conditions and at ambient temperatures, (f) being resistant to sag during setting, and (g) being substantially stable, and having at least about 65% by weight of total solids essentially consisting of (i) about 15.2 to 23.4 parts by weight of acrylonitrile latex component having synthetic, elastomeric, high molecular weight, acrylonitrile-butadiene copolymer with a predominance, on a weight basis, of butadiene, (ii) about 39 to 24.4 parts by weight of butyl latex component having synthetic, elastomeric, high molecular weight, isobutylene-isoprene copolymer with a predominance, on a weight basis, of isobutylene, and (iii) small, substantially uniformly dispersible particles of compatible, thixotropic, mineral flow control agent which imparts thixotropic and thickening characteristics to the sealant composition, and having up to about 35% by weight of volatile liquid vehicle for said solids essentially consisting of water.

Claim 12

An aqueous-based sealant composition which is characterized by (a) being adapted for use as a container end sealant, (b) being substantially free of volatile organic solvent, (c) being thixotropic, (d) having a Brookfield viscosity of about 2,800 to 12,000 cps., and (e) being settable under air-drying conditions and at ambient temperatures, (f) being resistant to sag during setting, and (g) being substantially stable, and having at least about 65% by weight of total solids essentially consisting of (i) about 15.2 to 23.4 parts by weight of acrylonitrile latex component having synthetic, elastomeric, high molecular weight, acrylonitrile-butadiene copolymer with a predominance, on a weight basis, of butadiene, (ii) about 39 to 24.4 parts by weight of butyl latex component having synthetic, elastomeric, high molecular weight, isobutylene-isoprene copolymer with a predominance, on a weight basis, of isobutylene, and (iii) small, substantially uniformly dispersible particles of compatible, thixotropic, mineral flow control agent which imparts thixotropic and thickening characteristics to the sealant composition, and having up to about 35% by weight of volatile liquid vehicle for said solids essentially consisting of water.

Claim 13

The aqueous-based sealant composition of claim 10, wherein said flow control agent comprises siliceous material.

Claim 14

The aqueous-based sealant composition of claim 11, wherein said flow control agent comprises aluminum silicate.

Claim 15

The aqueous-based sealant composition of claim 11, wherein said flow control agent comprises a mixture of aluminum silicate and fumed silica.

Claim 16

The aqueous-based sealant composition of claim 10, wherein said composition has a Brookfield viscosity of about 6,000 to 10,000 cps.

Claim 17

The aqueous-based sealant composition of claim 10, wherein said composition has said acrylonitrile and butyl latex components in a weight ratio of about 16.4 to 24.6::about 39 to 24.4.

Claim 18

The aqueous-based sealant composition of claim 10 wherein said composition has said acrylonitrile and butyl latex components in a weight ratio of about 18.4 to 22.6::about 35.8 to 27.4.

Claim 19

The aqueous-based sealant composition of claim 10, wherein said composition has about 65 to 72.5% by weight of total solids and about 35 to 27.5% by weight of water.

Claim 20

The aqueous-based sealant composition of claim 10, wherein said composition has about 67 to 70% by weight of total solids and about 33 to 30% by weight of water.

Claim 21

The aqueous-based sealant composition of claim 10, wherein said flow control agent is present in an amount within the range of about 60 to 150 parts by weight of flow control agent per 100 parts by weight of the total weight of said acrylonitrile and butyl latex components.

Claim 22

The aqueous-based sealant composition of claim 10, wherein said flow control agent comprises aluminum silicate in an amount within the range of about 100 to 150 parts by weight of aluminum silicate per 100 parts by weight of the total weight of said acrylonitrile and butyl latex components.

Claim 23

The aqueous-based sealant composition of claim 10, wherein said flow control agent comprises a mixture of aluminum silicate and fumed silica in an amount within the range of about 60 to 80 parts by weight of the mixture per 100 parts by weight of the total weight of said acrylonitrile and butyl latex components.

Claim 24

The aqueous-based sealant composition of claim 10, wherein the pH thereof is about 7 to 10.

Claim 25

An aqueous-based sealant composition which is characterized by (a) being adapted for use as a container end sealant, (b) being substantially free of volatile organic solvent, (c) being substantially stable and substantially homogeneous, (d) having a Brookfield viscosity of about 2,800 to 12,000 cps., (e) being settable under air-drying conditions and at ambient temperatures, and (f) being resistant to sag during setting, and having from about 65 to 72.5% by weight of total solids essentially consisting of (i) acrylonitrile latex component essentially consisting of synthetic, elastomeric, high molecular weight, acrylonitrile-butadiene copolymer with about 25 to 35% by weight of acrylonitrile and about 75 to 65% by weight of butadiene, (ii) butyl latex component essentially consisting of synthetic, elastomeric, high molecular weight, isobutylene-isoprene copolymer with about 97.7 to 98.2% by weight of isobutylene and about 2.3 to 1.8% by weight of isoprene, and (iii) small, substantially dispersible particles of compatible, thixotropic, mineral flow control agent which imparts thixotropic and thickening characteristics to the sealant composition, and having from about 35 to 27.5% by weight of volatile liquid vehicle for said solids essentially consisting of water, the weight ratio of said acrylonitrile-butadiene copolymer and said isobutylene-isoprene copolymer present in said total solids being about 15.2 to 23.4::about 39 to 24.4, said flow control agent being present in an amount of about 60 to 150 parts by weight per 100 parts by weight of the total weight of said acrylonitrile and butyl latex components.

Claim 26

An aqueous-based sealant composition which is characterized by (a) being adapted for use as a container end sealant, (b) being substantially free of volatile organic solvent, (c) being substantially stable and substantially homogeneous, (d) having a Brookfield viscosity of about 2,800 to 12,000 cps., (e) being settable under air-drying conditions and at ambient temperatures, and (f) being resistant to sag during setting, and having from about 65 to 72.5% by weight of total solids essentially consisting of (i) acrylonitrile latex component essentially consisting of synthetic, elastomeric, high molecular weight, acrylonitrile-butadiene copolymer with about 25 to 35% by weight of acrylonitrile and about 75 to 65% by weight of butadiene, (ii) butyl latex component essentially consisting of synthetic, elastomeric, high molecular weight, isobutylene-isoprene copolymer with about 97.7 to 98.2% by weight of isobutylene and about 2.3 to 1.8% by weight of isoprene, and (iii) small, substantially dispersible particles of compatible, thixotropic, mineral flow control agent which imparts thixotropic and thickening characteristics to the sealant composition, and having from about 35 to 27.5% by weight of volatile liquid vehicle for said solids essentially consisting of water, the weight ratio of said acrylonitrile-butadiene copolymer and said isobutylene-isoprene copolymer present in said total solids being about 15.2 to 23.4::about 39 to 24.4, said flow control agent being present in an amount of about 60 to 150 parts by weight per 100 parts by weight of the total weight of said acrylonitrile and butyl latex components.

Claim 27

The aqueous-based sealant composition of claim 23, wherein said flow control agent comprises siliceous material.

Claim 28

The aqueous-based sealant composition of claim 24, wherein said flow control agent comprises aluminum silicate.

Claim 29

The aqueous-based sealant composition of claim 24, wherein said flow control agent comprises a mixture of aluminum silicate and fumed silica.

Claim 30

The aqueous-based sealant composition of claim 23, wherein said composition has a Brookfield viscosity of about 6,000 to 10,000 cps.

Claim 31

The aqueous-based sealant composition of claim 23, wherein said composition has said acrylonitrile and butyl latex components in a weight ratio of about 16.4 to 24.6::about 39 to 24.4.

Claim 32

The aqueous-based sealant composition of claim 23, wherein said composition has said acrylonitrile and butyl latex components in a weight ratio of about 18.4 to 22.6::about 35.8 to 27.4.

Claim 33

The aqueous-based sealant composition of claim 23, wherein said composition has about 67 to 70% by weight of total solids and about 33 to 30% by weight of water.

Claim 34

The aqueous-based sealant composition of claim 23, wherein said flow control agent comprises aluminum silicate in an amount within the range of about 100 to 150 parts by weight of aluminum silicate per 100 parts by weight of the total weight of said acrylonitrile and butyl latex components.

Claim 35

The aqueous-based sealant composition of claim 23, wherein said flow control agent comprises a mixture of aluminum silicate and fumed silica in an amount within the range of about 60 to 80 parts by weight of the mixture per 100 parts by weight of the total weight of said acrylonitrile and butyl latex components.

Claim 36

The aqueous-based sealant composition of claim 23, wherein the pH thereof is about 7 to 10.