US4201308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-based container end sealing compositions and their use
Assignee: Valspar Corp
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Filing: 1978-01-06
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Granted: 1980-05-06
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Expires: 1998-01-06
Abstract
Abstract Improved aqueous or water-based sealant compositions adapted for use as container end sealants are disclosed, which have a relatively high total solids content, are substantially or entirely free of volatile organic solvents, have thixotropic characteristics prior to setting, are settable under air-drying conditions, at ambient temperatures and within requisite periods of time, and are essentially based upon a particular combination of synthetic, elastomeric, high molecular weight polymer components generally provided by or from separate latex forms thereof, and a thixotropic, mineral flow control agent which imparts desirable thixotropic characteristics to the water-based sealants and also serves as a thickener and filler for the sealant and as an extender for the elastomeric polymers thereof, all in an aqueous, stable and uniform form. Furthermore, the use of those water-based sealant compositions, after setting, in sealing container ends in place, and the resultant hermetically sealed containers are disclosed.
Inventors
- 👤 Daniel L. Neumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:24
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; B; B65; B65D; B65D53/00; B65D53/06; C09J; C09J123/00; C09J123/02; C09J123/18; C09J123/20; C09J123/22; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/54; C09K2003/1034; C09K2003/1071; C09K2200/00; C09K2200/02; C09K2200/0243; C09K2200/0247; C09K2200/06; C09K2200/0607; C09K2200/0612
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
114 words
In a container having at least one end connected and hermetically sealed to a body portion, the improvement being the use of a homogeneous, substantially solvent-free, set hermetic sealant composition substantially free of physical defects and blemishes, said sealant essentially consisting of (a) synthetic, elastomeric, high molecular weight, acrylonitrile-butadiene copolymer having, on a weight basis, a predominance of butadiene, (b) synthetic, elastomeric, high molecular weight, isobutylene-isoprene copolymer having, on a weight basis, a predominance of isobutylene, and (c) small particles of compatible, thixotropic, mineral flow control agent, the weight ratios of said acrylonitrile-butadiene copolymer, said isobutylene-isoprene copolymer, and said flow control agent being about 15.2 to 23.4::about 39 to 24.4::about 29.4 to 83.1, respectively.
Claim 2
Dependent Claim
114 words
In a container having at least one end connected and hermetically sealed to a body portion, the improvement being the use of a homogeneous, substantially solvent-free, set hermetic sealant composition substantially free of physical defects and blemishes, said sealant essentially consisting of (a) synthetic, elastomeric, high molecular weight, acrylonitrile-butadiene copolymer having, on a weight basis, a predominance of butadiene, (b) synthetic, elastomeric, high molecular weight, isobutylene-isoprene copolymer having, on a weight basis, a predominance of isobutylene, and (c) small particles of compatible, thixotropic, mineral flow control agent, the weight ratios of said acrylonitrile-butadiene copolymer, said isobutylene-isoprene copolymer, and said flow control agent being about 15.2 to 23.4::about 39 to 24.4::about 29.4 to 83.1, respectively.
Claim 3
Dependent Claim
14 words
The product of claim 1, wherein said mineral flow control agent comprises aluminum silicate.
Claim 4
Dependent Claim
41 words
The product of claim 1, wherein the mineral flow control agent comprises aluminum silicate, and said weight ratios of said acrylonitrile-butadiene copolymer, said isobutylene-isoprene copolymer, and said aluminum silicate are about 15.2 to 23.4::about 39 to 24.4::about 49 to 83.1, respectively.
Claim 5
Dependent Claim
41 words
The product of claim 1, wherein the mineral flow control agent comprises aluminum silicate, and said weight ratios of said acylonitrile-butadiene copolymer, said isobutylene-isoprene copolymer, and said aluminum silicate are about 17.1 to 21.5::about 35.8 to 27.4::about 60 to 70.5, respectively.
Claim 6
Dependent Claim
20 words
The product of claim 1, wherein said mineral flow control agent comprises a mixture of aluminum silicate and fumed silica.
Claim 7
Dependent Claim
46 words
The product of claim 1, wherein the mineral flow control agent comprises a mixture of aluminum silicate and fumed silica, and said weight ratios of said acrylonitrile-butadiene copolymer, said isobutylene-isoprene copolymer, and said mixture are about 15.2 to 23.4::about 39 to 24.4::about 29.4 to 44.3, respectively.
Claim 8
Dependent Claim
45 words
The product of claim 1, wherein the mineral flow control agent comprises a mixture of aluminum silicate and fumed silica, said weight ratios of said acrylonitrile-butadiene copolymer, said isobutylene-isoprene copolymer, and said mixture are about 17.1 to 21.5::about 35.8 to 27.4::about 32.5 to 40.7, respectively.
Claim 9
Dependent Claim
168 words
In a container having at least one end portion connected and hermetically sealed to a body portion, the improvement being the use of a homogeneous, substantially solvent-free, set hermetic sealant composition substantially free of physical defects and blemishes, said sealant essentially consisting of (a) synthetic, elastomeric, high molecular weight, acrylonitrile-butadiene copolymer from an acrylonitrile latex and essentially consisting of the total solids of said latex, the copolymer having about 25 to 35% by weight of acrylonitrile and about 75 to 65% by weight of butadiene, (b) synthetic, elastomeric, high molecular weight, isobutylene-isoprene copolymer from a butyl latex and essentially consisting of the total solids of said latex, the copolymer having about 97.7 to 98.2% by weight of isobutylene and about 2.3 to 1.8% by weight of isoprene, and (c) small particles of compatible, thixotropic, mineral flow control agent, the weight ratios of said acrylonitrile latex solids, said butyl latex solids, and said mineral flow control agent being about 16.4 to 24.6::about 39 to 24.4::about 29.4 to 83.1, respectively.
Claim 10
Dependent Claim
168 words
In a container having at least one end portion connected and hermetically sealed to a body portion, the improvement being the use of a homogeneous, substantially solvent-free, set hermetic sealant composition substantially free of physical defects and blemishes, said sealant essentially consisting of (a) synthetic, elastomeric, high molecular weight, acrylonitrile-butadiene copolymer from an acrylonitrile latex and essentially consisting of the total solids of said latex, the copolymer having about 25 to 35% by weight of acrylonitrile and about 75 to 65% by weight of butadiene, (b) synthetic, elastomeric, high molecular weight, isobutylene-isoprene copolymer from a butyl latex and essentially consisting of the total solids of said latex, the copolymer having about 97.7 to 98.2% by weight of isobutylene and about 2.3 to 1.8% by weight of isoprene, and (c) small particles of compatible, thixotropic, mineral flow control agent, the weight ratios of said acrylonitrile latex solids, said butyl latex solids, and said mineral flow control agent being about 16.4 to 24.6::about 39 to 24.4::about 29.4 to 83.1, respectively.
Claim 11
Dependent Claim
14 words
The product of claim 8, wherein said mineral flow control agent comprises aluminum silicate.
Claim 12
Dependent Claim
42 words
The product of claim 8, wherein the mineral control agent comprises aluminum silicate, and said weight ratios of said acrylonitrile latex solids, said butyl latex solids, and said aluminum silicate are about 16.4 to 24.6::about 39 to 24.4::about 49 to 83.1, respectively.
Claim 13
Dependent Claim
43 words
The product of claim 8, wherein the mineral flow control agent comprises aluminum silicate, and said weight ratios of said acrylonitrile latex solids, said butyl latex solids, and said aluminum silicate are about 18.4 to 22.6::about 35.8 to 27.4::about 60 to 70.5, respectively.
Claim 14
Dependent Claim
20 words
The product of claim 8, wherein said mineral flow control agent comprises a mixture of aluminum silicate and fumed silica.
Claim 15
Dependent Claim
48 words
The product of claim 8, wherein the mineral flow control agent comprises a mixture of aluminum silicate and fumed silica, and said weight ratios of said acrylonitrile latex solids, said butyl latex solids, and said mixture are about 16.4 to 24.6::about 39 to 24.4::about 29.4 to 44.3, respectively.
Claim 16
Dependent Claim
47 words
The product of claim 8, wherein the mineral flow control agent comprises a mixture of aluminum silicate and fumed silica, said weight ratios of said acrylonitrile latex solids, said butyl latex solids, and said mixture are about 18.4 to 22.6::about 35.8 to 27.4::about 32.5 to 40.7, respectively.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |