US3591191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe having a sealing ring of a thermoset emulsion
Assignee: Ashland LLC
•
Filing: 1968-04-29
•
Granted: 1971-07-06
•
Expires: 1988-04-29
Abstract
Abstract A pipe having attached to at least one end thereof a jointforming annular ring of a thermoset emulsion. The ring has a configuration to mate with another pipe whose end has a configuration to couple with the ring to form in the presence of a gasket a complete, tight-fitting pipe joint. The thermoset emulsion is a water-in-oil emulsion comprising: 1. WATER AS THE DISCONTINUOUS PHASE, 2. A POLYMERIZABLE MIXTURE AS THE CONTINUOUS PHASE, COMPRISING: A. AN UNSATURATED POLYESTER SUCH AS ONE PRODUCED BY USE OF AN ALPHA, BETA-ETHYLENICALLY UNSATURATED POLYCARBOXYLIC ACID, AND A COPOLYMERIZABLE SOLVENT SUCH AS STYRENE.
Inventors
- 👤 Richard A Coderre
- 👤 Robert H Leitheiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:48
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/02; F16L21/035; C; C08; C08F; C08F283/00; C08F283/01; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/944
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
5 words
WATER AS THE DISCONTINUOUS PHASE.
Claim 2
Dependent Claim
5 words
WATER AS THE DISCONTINUOUS PHASE.
Claim 3
Dependent Claim
32 words
A POLYMERIZABLE MIXTURE AS THE CONTINUOUS PHASE, COMPRISING: (A) AN UNSATURATED POLYESTER SUCH AS ONE PRODUCED BY USE OF AN ALPHA, BETA-ETHYLENICALLY UNSATURATED POLYCARBOXYLIC ACID AND A COPOLYMERIZABLE SOLVENT SUCH AS STYRENE.
Claim 4
Dependent Claim
32 words
A POLYMERIZABLE MIXTURE AS THE CONTINUOUS PHASE, COMPRISING: (A) AN UNSATURATED POLYESTER SUCH AS ONE PRODUCED BY USE OF AN ALPHA, BETA-ETHYLENICALLY UNSATURATED POLYCARBOXYLIC ACID AND A COPOLYMERIZABLE SOLVENT SUCH AS STYRENE.
Claim 5
Dependent Claim
50 words
15 to 60 percent by weight of a polymerizable mixture of the continuous phase, comprising: a. an unsaturated polyester and b. a copolymerizable solvent, in a weight ratio of (b) to (a) within the range of 10:1 to 1:9, said mixture being adapted to harden to a resilient, cross-linked solid.
Claim 6
Dependent Claim
50 words
15 to 60 percent by weight of a polymerizable mixture of the continuous phase, comprising: a. an unsaturated polyester and b. a copolymerizable solvent, in a weight ratio of (b) to (a) within the range of 10:1 to 1:9, said mixture being adapted to harden to a resilient, cross-linked solid.
Claim 7
Dependent Claim
28 words
The pipe of claim 1 wherein the emulsion also contains from 0.1 to 10 percent by weight of an emulsifier having an HLB value of 2 to 8.
Claim 8
Dependent Claim
37 words
The pipe of claim 1 wherein the polymerizable mixture comprises: a. an unsaturated linear polyester comprising the reaction product of an alpha, beta-ethylenically unsaturated dicarboxylic acid and a polyhydric alcohol and b. a copolymerizable vinyl monomer solvent.
Claim 9
Dependent Claim
12 words
The pipe of claim 3 wherein the copolymerizable vinyl monomer is styrene.
Claim 10
Dependent Claim
39 words
The pipe of claim 3 wherein the polyester is composed of from about 70 to about 45 percent by weight of said unsaturated dicarboxylic acid and from about 30 to about 55 percent by weight of said polyhydric alcohol.
Claim 11
Dependent Claim
31 words
The pipe of claim 5 wherein the unsaturated dicarboxylic acid is selected from the group consisting of maleic acid, fumaric acid, itaconic acid, equivalents thereof, their extant anhydrides, and mixtures thereof.
Claim 12
Dependent Claim
41 words
The pipe of claim 5 wherein the polyhydric alcohol is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, 1,2-propylene glycol, 1,2-dipropylene glycol, 1,3-dipropylene glycol, tripropylene glycol, 1,3-propylene glycol, 1,3-butylene glycol, 1,2-butylene glycol, neopentyl glycol, 1,3-pentanediol, and 1,5-pentanediol.
Claim 13
Dependent Claim
15 words
The pipe of claim 7 wherein the continuous phase further comprises a free radical catalyst.
Claim 14
Dependent Claim
25 words
The pipe of claim 1 wherein an emulsifier having an HLB value of 2 to 6 is added to the continuous phase prior to emulsification.
Claim 15
Dependent Claim
16 words
The pipe of claim 9 wherein from 0.1 to 10 percent of the emulsifier is added.
References Cited (Backward Citations)
CA668250A
Cited
US2986411A
Cited
US2955322A
Cited
US3256219A
Cited
US3135519A
Cited
US3206441A
Cited
US3237954A
Cited
US3442842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |