Patent US3886229A successfully refreshed from Google Patents.
US3886229A
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US
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Shaped polymeric articles
Assignee: Imperial Chemical Industries Ltd
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Filing: 1972-07-17
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Granted: 1975-05-27
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Expires: 1992-07-17
Abstract
Abstract A polymeric product formed from A. 5 TO 95 PERCENT BY WEIGHT OF THE PRECURSORS OF A LINEAR POLYURETHANE COMPRISING AT LEAST ONE DIISOCYANATE AND AT LEAST ONE DIFUNCTIONAL COMPOUND CONTAINING TWO GROUPS REACTIVE WITH ISOCYANATE GROUPS, EACH UNIT DERIVED FROM THE DIFUNCTIONAL COMPOUND IN THE POLYMERIC PRODUCT PROVIDING AN AVERAGE OF NOT MORE THAN 35 IN-CHAIN ATOMS IN THE MACROMOLECULAR CHAINS OF THE PRODUCT, AND B. 95 TO 5 PERCENT BY WEIGHT OF THE PRECURSORS OF A CURED POLYESTER RESIN COMPRISING I. AT LEAST ONE ETHYLENICALLY UNSATURATED POLYESTER, AND II. AT LEAST ONE MONOMER COPOLYMERISABLE WITH THE ETHYLENICALLY UNSATURATED GROUPS IN THE POLYESTER.
Inventors
- 👤 Francis Gowland Hutchinson
- 👤 Richard George C Henbest
- 👤 Margaret Kenley Leggett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:00
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/4879; C08G18/67; C08G18/68; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
236 words
A POLYMERIC PRODUCT FORMED FORM A. 5 PERCENT TO 95 PERCENT BY WEIGHT OF THE PRECURSORS OF A LINEAR POLYURETHANE CONSISTING OF AT LEAST ONE DIISOCYANATE AND AT LEAST ONE DIFLUNCTIONAL COMPOUND FREE FROM ETHYLENIC UNSATURATION AND CONTAINING TWO GROUPS REACTIVE WITH ISOCYANATE GROUPS, EACH UNIT DERIVED FROM THE DIFUNCTIONAL COMPOUND IN THE POLYMERIC PRODUCT PROVIDING AN AVERAGE OF NOT MORE THAN 35 IN-CHAIN ATOMS IN THE MACROMOLECULAR CHAINS OF SAID PRODUCT, AND SAID DIFUNCTIONAL COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF DIOLS, DIACIDS, AND LOW MOLECULAR WEIGHT CONDENSTATES THEREOF, AND B. 95 PERCENT OF 5 PERCENT BY WEIGHT OF THE PRECURSORS OF A CURED POLYESTER RESIN CONSISTING OF I. AT LEAST ONE ETHYLENICALLY UNSATURATED POLYESTER CONTAINING IN EACH MOLECULE AT LEAST TWO GROUPS REACTIVE WITH ISOCYANATE GROUPS, AND II. AT LEAST ONE MONOMER COPOLYMERIZABLE WITH THE ETHYLENICALLY UNSATURATED GROUPS IN THE POLYESTER, THE PROPORTION OF ETHYLENICALLY UNSATURATED POLYESTER TO MONOMER COPOLYMERIZABLE THEREWITH BEING IN THE RANGE 70%:30% TO 10%:90% BY WEIGHT, THE MOLAR PROPORTION OF ISOCYANATE GROUPS IN THE DIISOCYANATE TO GROUPS REACTIVE WITH ISOCYANATE GROUPS IN THE DIFUNCTIONAL COMPOUND PLUS GROUPS REACTIVE WITH ISOCYANATE GROUPS IN THE ETHYLENICALLY UNSATURATED POLYESTER BEING IN THE RANGE 0.8:1 TO 1.2:1, SAID POLYMERIC PRODUCT BEING FORMED BY A REACTION OF THE PRECURSORS OF THE LINEAR POLYURETHANE TOGETHER AND WITH THE ETHYLENICALLY UNSATURATED POLYESTER AND BY COPOLYMERIZATION OF THE MONOMER WITH THE ETHYLENICALLY UNSATURATED GROUPS IN THE POLYESTER.
Claim 2
Dependent Claim
236 words
A POLYMERIC PRODUCT FORMED FORM A. 5 PERCENT TO 95 PERCENT BY WEIGHT OF THE PRECURSORS OF A LINEAR POLYURETHANE CONSISTING OF AT LEAST ONE DIISOCYANATE AND AT LEAST ONE DIFLUNCTIONAL COMPOUND FREE FROM ETHYLENIC UNSATURATION AND CONTAINING TWO GROUPS REACTIVE WITH ISOCYANATE GROUPS, EACH UNIT DERIVED FROM THE DIFUNCTIONAL COMPOUND IN THE POLYMERIC PRODUCT PROVIDING AN AVERAGE OF NOT MORE THAN 35 IN-CHAIN ATOMS IN THE MACROMOLECULAR CHAINS OF SAID PRODUCT, AND SAID DIFUNCTIONAL COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF DIOLS, DIACIDS, AND LOW MOLECULAR WEIGHT CONDENSTATES THEREOF, AND B. 95 PERCENT OF 5 PERCENT BY WEIGHT OF THE PRECURSORS OF A CURED POLYESTER RESIN CONSISTING OF I. AT LEAST ONE ETHYLENICALLY UNSATURATED POLYESTER CONTAINING IN EACH MOLECULE AT LEAST TWO GROUPS REACTIVE WITH ISOCYANATE GROUPS, AND II. AT LEAST ONE MONOMER COPOLYMERIZABLE WITH THE ETHYLENICALLY UNSATURATED GROUPS IN THE POLYESTER, THE PROPORTION OF ETHYLENICALLY UNSATURATED POLYESTER TO MONOMER COPOLYMERIZABLE THEREWITH BEING IN THE RANGE 70%:30% TO 10%:90% BY WEIGHT, THE MOLAR PROPORTION OF ISOCYANATE GROUPS IN THE DIISOCYANATE TO GROUPS REACTIVE WITH ISOCYANATE GROUPS IN THE DIFUNCTIONAL COMPOUND PLUS GROUPS REACTIVE WITH ISOCYANATE GROUPS IN THE ETHYLENICALLY UNSATURATED POLYESTER BEING IN THE RANGE 0.8:1 TO 1.2:1, SAID POLYMERIC PRODUCT BEING FORMED BY A REACTION OF THE PRECURSORS OF THE LINEAR POLYURETHANE TOGETHER AND WITH THE ETHYLENICALLY UNSATURATED POLYESTER AND BY COPOLYMERIZATION OF THE MONOMER WITH THE ETHYLENICALLY UNSATURATED GROUPS IN THE POLYESTER.
Claim 3
Dependent Claim
35 words
A polymeric product as claimed in claim 1 which is formed from 30 percent to 70 percent by weight of polyurethane precursors and 70 percent to 30 percent by weight of cured polyester resin precursors.
Claim 4
Dependent Claim
40 words
A polymeric product as claimed in claim 1 in which the molar proportion of isocyanate groups in the diisocyanate to groups reactive with isocyanate groups in the difunctional compound plus ethylenically unsaturated polyester is in the range 0.9:1 to 1.15:1.
Claim 5
Dependent Claim
41 words
A polymeric product as claimed in claim 1 in which in the polyurethane precursors the diisocyanate is selected from the grouP consisting of 4:4''-diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, 2: 4-toluene diisocyanate, 2:6-toluene diisocyanate, and a mixture of said toluene diisocyanates.
Claim 6
Dependent Claim
20 words
A polymeric product as claimed in claim 1 in which in the polyurethane precursors the difunctional compound is a diol.
Claim 7
Dependent Claim
15 words
A polymeric product as claimed in claim 5 in which the diol has the structure
Claim 8
Dependent Claim
22 words
A polymeric product as claimed in claim 6 in which one of R1 and R2 is H and the other is methyl.
Claim 9
Dependent Claim
25 words
A polymeric product as claimed in claim 5 in which the diol is selected from the group consisting of poly(ethylene glycol), diethylene glycol and cyclohexane-1:3-diol.
Claim 10
Dependent Claim
20 words
A polymeric product as claimed in claim 1 in which in the polyurethane precursors the difunctional compound is a polyester.
Claim 11
Dependent Claim
21 words
A polymeric product as claimed in claim 9 in which the polyester is a condensate of propylene glycol and adipic acid.
Claim 12
Dependent Claim
12 words
A polymeric product as claimed in claim 1 which contains fiber reinforcement.
Claim 13
Dependent Claim
53 words
A process for the production of a shaped polymeric article which comprises polymerizing a homogeneous mixture of the precursors of a linear polyurethane and the precursors of a cured polyester resin as described in claim 1 and shaping the mixture before the polymerization has proceeded to the extent that the mixture is intractable.
Claim 14
Dependent Claim
82 words
A process for the production of a shaped polymeric article which comprises reacting at least one difunctional compound, at least one diisocyanate and at least one ethylenically unsaturated polyester as described in claim 1, forming a homogeneous mixture of the thus formed product and at least one monomer copolymerizable with the ethylenically unsaturated groups in the polyester, causing or allowing the resultant mixture to react and shaping the mixture before the reaction has proceeded to the extent that the mixture is intractable.
Claim 15
Dependent Claim
63 words
A process for the production of a shaped polymeric article which comprises the steps of a. performing a shaping operation on a partially polymerized composition formed from the precursors of a linear polyurethane and the precursors of a cured polyester resin as described in claim 1, and b. causing or allowing the thus shaped article to retain its shape while completing the polymerization.
Claim 16
Dependent Claim
20 words
A process as claimed in claim 14 in which the partially polymerized composition is in the form of a sheet.
Claim 17
Dependent Claim
18 words
A process as claimed in claim 14 in which the partially polymerized composition is in a particulate form.
Claim 18
Dependent Claim
87 words
A composition suitable for shaping and comprising a polymerizate of the precursors of a linear polyurethane and the precursors of a cured polyester resin as described in claim 1 in which the polymerization has proceeded to the extent that the difunctional compound, the diisocyanate and the ethylenically unsaturated polyester are substantially fully reacted and in which the ethylenically unsaturated polyester and the monomer copolymerizable with the ethylenically unsaturated groups in the polyester are substantially unreacted or have reacted to an extent such that the composition is tractable.
References Cited (Backward Citations)
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US3371056A
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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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |