Patent US3666697A successfully refreshed from Google Patents.
US3666697A
Expired / Lapsed
US
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Method for producing shaped plastic articles
Assignee: Ashland LLC
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Filing: 1970-03-11
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Granted: 1972-05-30
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Expires: 1990-03-11
Abstract
Abstract A method is disclosed for producing shaped plastic articles in the form of a solid water-in-oil emulsion wherein the water phase exists as discrete colloidal-size water droplets dispersed in a continuous oil phase consisting of the thermoset polymerization product of an essentially linear unsaturated polyester and a vinyl monomer. The foremost utility of the disclosed method is that it provides shaped articles whose surfaces are substantially free of irregularities in the nature of pimples.
Inventors
- 👤 Casimir C Peloza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:41
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06; C08F; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
30 words
The improvement in accordance with claim 1 wherein said adjuvant is incorporated in the amount of from about 0.1 to 10 percent based on the weight of the oil phase.
Claim 2
Dependent Claim
28 words
concurrently shaping the emulsion of step (1) and catalytically effecting the cure of component (a) thereof with an organic peroxide without breaking the dispersed nature of the emulsion.
Claim 3
Dependent Claim
23 words
The improvement in accordance with claim 2 wherein said adjuvant is incorporated in the form of a dispersion thereof in the oil phase.
Claim 4
Dependent Claim
30 words
The improvement in accordance with claim 3 wherein said adjuvant is incorporated in the amount of from about 0.5 to 1.5 percent based on the weight of the oil phase.
Claim 5
Dependent Claim
21 words
The improvement in accordance with claim 4 wherein said adjuvant is the aluminum, calcium, or zinc soap of the fatty acid.
Claim 6
Dependent Claim
14 words
The improvement in accordance with claim 5 wherein said adjuvant is the zinc soap.
Claim 7
Dependent Claim
13 words
The improvement in accordance with claim 6 wherein said soap is zinc stearate.
Claim 8
Independent Claim
9 words
A method for producing shaped plastic articles which comprises:
Claim 9
Dependent Claim
53 words
A method in accordance with claim 8 wherein said polyester resinous composition consists essentially of from about 35 to 65 parts by weight of an ethylenically unsaturated polyester and correspondingly from 65 to 35 parts by weight styrene and wherein the weight ratio of (a) to (b) is from 30:70 to 50:50, respectively.
Claim 10
Dependent Claim
30 words
A method in accordance with claim 9 wherein said adjuvant is present in the amount of from about 0.5 to 1.5 percent based on the weight of said component (a).
Claim 11
Dependent Claim
21 words
A method in accordance with claim 10 wherein said adjuvant is the aluminum, calcium or zinc soap of the fatty acid.
Claim 12
Dependent Claim
14 words
A method in accordance with claim 11 wherein said adjuvant is the zinc soap.
Claim 13
Dependent Claim
13 words
A method in accordance with claim 12 wherein said soap is zinc stearate.
References Cited (Backward Citations)
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Cited
US2843556A
Cited
US3140268A
Cited
US3256219A
Cited
US3227665A
Cited
US3461087A
Cited
US3516957A
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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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |