Patent US3960981A successfully refreshed from Google Patents.
US3960981A
Expired / Lapsed
US
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Mixtures of vinyl ester resins
Assignee: Societa Italiana Resine SpA SIR
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Filing: 1974-12-27
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Granted: 1976-06-01
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Expires: 1994-12-27
Abstract
Abstract An insaturated polyester A of the formula: ##EQU1## wherein n is an integer from 0 to 15, R 11 ##EQU2## is the acid radical of an unsaturated monocarboxylic acid or of a monoester of an unsaturated bicarboxylic acid, R 13 is H or CH 3 , and R 10 is an organic radical of a glycol HO-R 10 -OH representated by the formulae: ##SPC1## Wherein: R 1 is chlorine or bromine, R 2 , r 3 , r 4 , r 5 , r 6 , r 7 , r 8 are hydrogen or bromine or chlorine, X is a NH radical or oxygen, R 9 is an alkyl or oxyalkyl radical containing 2 to 8 carbon atoms. The solutions in an unsaturated solvent of said polyester A or of mixtures of polyester A with other unsaturated polyesters can harden, giving products of improved mechanical and self-extinguishing properties.
Inventors
- 👤 Silvio Vargiu
- 👤 Edoardo Carpaneti
- 👤 Beppino Passalenti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:13
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C08; C08F; C08F283/00; C08F299/00; C08F299/02; C08F299/026; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; C08G59/18; C08G59/40; C08G59/42; C08G59/4207
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
227 words
An unsaturated organic solvent solution of a mixture of polyesters comprising a first polyester of the formula: ##EQU10## wherein: n is an integer from 0 to 15, R 13 is a radical selected from the group consisting of H and CH 3 , ##EQU11## is a member of the group consisting of ethylenically unsaturated monocarboxylic acids and monoesters ethylenically unsaturated dicarboxylic acids, R 10 is the organic radical of a glycol HO-R 10 -OH selected from the group consisting of: ##SPC3## wherein: R 1 is chlorine or bromine; R 2 , r 3 , r 4 , r 5 , r 6 , r 7 , r 8 are radicals selected from the group consisting of hydrogen, bromine and chlorine radicals, X is selected from the group consisting of the NH radical and oxygen, R 9 is a radical selected from the group consisting of alkyl and oxyalkyl radicals containing 2 to 8 carbon atoms; and a second polyester of the formula: ##EQU12## wherein: m is an integer from 0 to 20 R is the bisphenyl radical corresponding to the bisphenol A ##EQU13## is a member of the group consisting of ethylenically unsaturated monocarboxylic acids and monoesters of ethylenically unsaturated dicarboxylic acids said first polyester being present in the solution in a weight ratio of said first polyester to said second polyester of from 1:100 to 30:100.
Claim 2
Dependent Claim
227 words
An unsaturated organic solvent solution of a mixture of polyesters comprising a first polyester of the formula: ##EQU10## wherein: n is an integer from 0 to 15, R 13 is a radical selected from the group consisting of H and CH 3 , ##EQU11## is a member of the group consisting of ethylenically unsaturated monocarboxylic acids and monoesters ethylenically unsaturated dicarboxylic acids, R 10 is the organic radical of a glycol HO-R 10 -OH selected from the group consisting of: ##SPC3## wherein: R 1 is chlorine or bromine; R 2 , r 3 , r 4 , r 5 , r 6 , r 7 , r 8 are radicals selected from the group consisting of hydrogen, bromine and chlorine radicals, X is selected from the group consisting of the NH radical and oxygen, R 9 is a radical selected from the group consisting of alkyl and oxyalkyl radicals containing 2 to 8 carbon atoms; and a second polyester of the formula: ##EQU12## wherein: m is an integer from 0 to 20 R is the bisphenyl radical corresponding to the bisphenol A ##EQU13## is a member of the group consisting of ethylenically unsaturated monocarboxylic acids and monoesters of ethylenically unsaturated dicarboxylic acids said first polyester being present in the solution in a weight ratio of said first polyester to said second polyester of from 1:100 to 30:100.
Claim 3
Dependent Claim
36 words
The solution of claim 1, wherein the said acid radical of the polyester B is selected in the group consisting of those of acrylic acid, methacrylic acid, itaconic acid, crotonic acid, methyl monomaleate and methyl monofumarate.
Claim 4
Dependent Claim
27 words
The solution of claim 1, wherein the said solvent is selected in the group consisting of styrene, vinyl toluene, alpha-methyl styrene, methyl methacrylate, diallyl phthalate and vinylcyclohexane.
Claim 5
Dependent Claim
11 words
The solution of claim 1, wherein the said solvent is styrene.
Claim 6
Dependent Claim
29 words
The solution of claim 4, wherein the styrene is present in a proportion of from 30 to 50 percent by weight with respect to the weight of the solution.
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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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |