US5922798A
Expired / Lapsed
US
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Microencapsulatable solvent adhesive composition and method for coupling conduits
Assignee: Lamson and Sessions Co
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Filing: 1998-01-20
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Granted: 1999-07-13
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Expires: 2018-01-20
Abstract
Abstract A microencapsulatable solvent adhesive composition for coupling plastic conduits, such as pipes, connectors and related fittings comprises a water-insoluble polymer and a mixture of volatile organic solvents for the polymer, each of the solvents having 6 to 40 carbon atoms. This solvent adhesive composition is suitable for microencapsulation by aqueous-based microencapsulation processes. A plurality of microcapsules encapsulating the solvent adhesive composition are bound to a polymeric surface of a conduit, such as a pipe connector or fitting, by a binder composition, to form a surface coated with a layer of rupturable microcapsules. When the microcapsules are ruptured upon joining of the coated conduit to a second conduit, the volume of the released solvent adhesive composition is sufficient to cement the surfaces together.
Inventors
- 👤 Mark A. Roesch
- 👤 David A. Maccarone
- 👤 Gary F. Hillenbrand
- 👤 Morris F. Newsom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:26
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/02; C; C09; C09J; C09J11/00; C09J127/00; C09J127/02; C09J127/04; C09J127/06; C09J127/22; C09J127/24; C09J9/00; F16L13/00; F16L13/10; F16L13/103; B; B29; B29C; B29C65/00; B29C65/48; B29C65/4805; B29C65/481; B29C65/482; B29C65/52; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5229; B29C66/52291; B29C66/52292; B29C66/53; B29C66/534; B29C66/5344; C08; C08L; C08L2205/00; C08L2205/02; C08L2205/14; C08L2205/18; C08L2666/00; C08L2666/02; C08L2666/04; C08L27/00; C08L27/02; C08L27/04; C08L27/06; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249994; Y10T428/249995; Y10T428/249997; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
95 words
A solvent adhesive composition, comprising: (a) 3 to 20 parts by weight of a water-insoluble polymer selected from the group consisting essentially of polyvinylchloride, chlorinated polyvinylchloride, acrylonitrile-butadiene-styrene, polyacrylates, polystyrene, polycarbonates, and mixtures and copolymers thereof; and (b) 80 to 97 parts by weight of a mixture of volatile organic solvents, each of said solvents comprising 6 to 40 carbon atoms, wherein each of said solvents in the mixture of solvents is a solvent for the polymer defined in (a), and wherein the mixture of solvents has a solubility in water of less than two percent.
Claim 2
Dependent Claim
95 words
A solvent adhesive composition, comprising: (a) 3 to 20 parts by weight of a water-insoluble polymer selected from the group consisting essentially of polyvinylchloride, chlorinated polyvinylchloride, acrylonitrile-butadiene-styrene, polyacrylates, polystyrene, polycarbonates, and mixtures and copolymers thereof; and (b) 80 to 97 parts by weight of a mixture of volatile organic solvents, each of said solvents comprising 6 to 40 carbon atoms, wherein each of said solvents in the mixture of solvents is a solvent for the polymer defined in (a), and wherein the mixture of solvents has a solubility in water of less than two percent.
Claim 3
Dependent Claim
25 words
The solvent adhesive composition of claim 1, wherein the mixture of solvents has a solubility in water of less than one and a half percent.
Claim 4
Dependent Claim
33 words
The solvent adhesive composition of claim 1, wherein the solvents are selected from the group consisting of aromatic hydrocarbons, cyclic ethers, esters, lactones, linear ketones, branched ketones, cyclic ketones and alkyl-substituted cyclic ketones.
Claim 5
Dependent Claim
20 words
The solvent adhesive composition of claim 1, further comprising 3 to 20 parts by weight of a second water-insoluble polymer.
Claim 6
Dependent Claim
19 words
The solvent adhesive composition of claim 4, wherein the second polymer is a copolymer of the polymer of (a).
Claim 7
Dependent Claim
38 words
The solvent adhesive composition of claim 1, wherein the polymer is selected from the group consisting of polyvinylchloride, chlorinated polyvinylchloride, and mixtures thereof, and the solvents are selected from toluene, 2-octanone, 2-methyltetrahydropyran, 3-methyltetrahydropyran, 4-methyltetrahydropyran, butyl butyrate and cyclohexanone.
Claim 8
Dependent Claim
99 words
A solvent adhesive composition, comprising: (a) 3 to 20 parts by weight of a water-insoluble polymer selected from homopolymers of polyvinylchloride, chlorinated polyvinylchloride, and mixtures and copolymers thereof; and (b) 80 to 97 parts by weight of a mixture of volatile organic solvents for the polymer of (a), wherein each of said solvents comprises 6 to 40 carbon atoms and is selected from the group consisting of aromatic hydrocarbons, cyclic ethers, esters, lactones, linear ketones, branched ketones, cyclic ketones and alkyl-substituted cyclic ketones, and wherein the mixture of solvents has a solubility in water of less than two percent.
Claim 9
Dependent Claim
99 words
A solvent adhesive composition, comprising: (a) 3 to 20 parts by weight of a water-insoluble polymer selected from homopolymers of polyvinylchloride, chlorinated polyvinylchloride, and mixtures and copolymers thereof; and (b) 80 to 97 parts by weight of a mixture of volatile organic solvents for the polymer of (a), wherein each of said solvents comprises 6 to 40 carbon atoms and is selected from the group consisting of aromatic hydrocarbons, cyclic ethers, esters, lactones, linear ketones, branched ketones, cyclic ketones and alkyl-substituted cyclic ketones, and wherein the mixture of solvents has a solubility in water of less than two percent.
Claim 10
Dependent Claim
25 words
The solvent adhesive composition of claim 7, wherein the mixture of solvents has a solubility in water of less than one and a half percent.
Claim 11
Dependent Claim
23 words
The solvent adhesive composition of claim 7, further comprising 3 to 20 parts by weight of a copolymer of the polymer of (a).
Claim 12
Dependent Claim
59 words
The solvent adhesive composition of claim 7, wherein the composition comprises 3 to 10 parts by weight polyvinylchloride resin, 3 to 10 parts by weight polyvinylchloride-vinyl acetate copolymer resin, 0 to 50 parts by weight 2-octanone, 0 to 35 parts by weight 3-methyltetrahydropyran, 20 to 60 parts by weight butyl butyrate and 20 to 60 parts by weight toluene.
Claim 13
Dependent Claim
59 words
The solvent adhesive composition of claim 10, wherein the composition comprises 4 to 8 parts by weight polyvinylchloride resin, 4 to 8 parts by weight polyvinylchloride-vinyl acetate copolymer resin, 0 to 30 parts by weight 2-octanone, 0 to 32 parts by weight 3-methyltetrahydropyran, 25 to 50 parts by weight butyl butyrate and 25 to 50 parts by weight toluene.
Claim 14
Dependent Claim
42 words
The solvent adhesive composition of claim 11, wherein the composition comprises 5 parts by weight polyvinylchloride resin, 5 parts by weight polyvinylchloride-vinyl acetate copolymer resin, 30 parts by weight 3-methyltetrahydropyran, 30 parts by weight butyl butyrate and 30 parts by weight toluene.
Claim 15
Dependent Claim
34 words
The solvent adhesive composition of claim 12, wherein the composition comprises 4 to 20 parts by weight polyvinylchloride resin, 8 to 40 parts by weight cyclohexanone and 40 to 88 parts by weight toluene.
Claim 16
Dependent Claim
34 words
The solvent adhesive composition of claim 13, wherein the composition comprises 4 to 10 parts by weight polyvinylchloride resin, 8 to 30 parts by weight cyclohexanone and 60 to 88 parts by weight toluene.
Claim 17
Dependent Claim
31 words
The solvent adhesive composition of claim 14, wherein the composition comprises about 5 parts by weight polyvinylchloride resin, about 10 parts by weight cyclohexanone and about 85 parts by weight toluene.
References Cited (Backward Citations)
US2988461A
Cited
US3378420A
Cited
US3489599A
Cited
US3686701A
Cited
US3821060A
Cited
US3814156A
Cited
US3922373A
Cited
US4073946A
Cited
JPS5098520A
Cited
US4200480A
Cited
US4107071A
Cited
DE2813538A1
Cited
US4207697A
Cited
US4536524A
Cited
US4377621A
Cited
DE3512537A1
Cited
US4672084A
Cited
US4865938A
Cited
JPH02229380A
Cited
WO1992016290A1
Cited
US5384345A
Cited
US5416142A
Cited
US5297819A
Cited
GB2274461A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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