US4232133A
Expired / Lapsed
US
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Polyisocyanurate containing molding compositions
Assignee: Beazer East Inc
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Filing: 1978-07-27
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Granted: 1980-11-04
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Expires: 1998-07-27
Abstract
Abstract Ethylenically unsaturated monomer solutions containing ethylenically unsaturated polyisocyanurate resins are thickened to moldable non-sticky gels by the formation in said solution of minor amounts of cross-linked polyurethane resin mixtures. These are made by the addition of polyisocyanates and certain low molecular weight polyols and urethane formation catalysts. When these moldable gels are fully cured, their physical properties are nearly equal to those cast from the ungelled polyisocyanurate monomer copolymer.
Inventors
- 👤 L. James Ferrarini, Jr.
- 👤 Joseph Feltzin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:41
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/022; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/63; C08G18/637
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
104 words
A resin blend useful in preparing non-sticky molding compositions by the reaction therewith of polyisocyanates which comprises: 5-95% by weight of polyethylenically unsaturated polyisocyanurate resin having a molecular weight in the range of 2,000-200,000, - 95% by weight of an ethylenically unsaturated monomer, and; 1.5-30% by weight of a relatively non-polar polyol free of ethylenic unsaturation having a molecular weight in the range of 300-2,000 selected from the group consisting of polyols of polyethylene glycol, polypropylene glycol, polytetramethylene glycol, aromatic ethers which are condensation products of propylene oxide and aromatic polyols, and dihydroxy terminateed polyesters derived from glycols or polyether glycols and dicarboxylic acids.
Claim 2
Dependent Claim
104 words
A resin blend useful in preparing non-sticky molding compositions by the reaction therewith of polyisocyanates which comprises: 5-95% by weight of polyethylenically unsaturated polyisocyanurate resin having a molecular weight in the range of 2,000-200,000, - 95% by weight of an ethylenically unsaturated monomer, and; 1.5-30% by weight of a relatively non-polar polyol free of ethylenic unsaturation having a molecular weight in the range of 300-2,000 selected from the group consisting of polyols of polyethylene glycol, polypropylene glycol, polytetramethylene glycol, aromatic ethers which are condensation products of propylene oxide and aromatic polyols, and dihydroxy terminateed polyesters derived from glycols or polyether glycols and dicarboxylic acids.
Claim 3
Dependent Claim
52 words
A composition of claim 1 wherein said polyethylenically unsaturated polyisocyanurate resin is a condensation product of an aromatic polyisocyanate and a monohydric alcohol selected from the group consisting of hydroxypropyl methacrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, hydroxyethyl acrylate, pentaerythritol triacrylate, allyl alcohol, dibromoeopentyl glycol monoacrylate and monoacrylate or monomethacrylate esters of bisphenol A.
Claim 4
Dependent Claim
36 words
A composition of claim 2 wherein said aromatic polyisocyanate is selected from the group consisting of 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, m-phenylene diisocyanate, p-phenylene diisocyanate, 4,4'-dephenyl ether diisocyanate, polymethylene polyphenyl isocyanates having 2-6 isocyanate groups per mol.
Claim 5
Dependent Claim
46 words
A composition of claim 1 wherein said ethylenically unsaturated monomer is selected from the group consisting of styrene, vinyl toluene, divinyl benzene, the methyl, ethyl, n-butyl, 2-ethyl hexyl or pentaerythritol esters of acrylic and methacrylic acid, triallyl isocyanurate vinyl acetate, diallyl fumarate, vinyl ether and acrylonitrile.
Claim 6
Dependent Claim
12 words
A composition of claim 1 wherein said ethylenically unsaturated monomer is styrene.
Claim 7
Dependent Claim
20 words
A composition of claim 1 wherein said ethylenically unsaturated polyisocyanurate is a condensation product of toluene diisocyanate and hydroxypropyl methacrylate.
Claim 8
Dependent Claim
33 words
A composition of claim 1 wherein said polyol is selected from the group consisting of polyethers of aromatic glycols which are condensation products of 1 mol of glycol and 2-15 mols propylene oxide.
Claim 9
Dependent Claim
13 words
A composition of claim 7 wherein said polyol is polyoxypropylene (2-9) bisphenol A.
Claim 10
Dependent Claim
12 words
A composition of claim 1 which comprises polyurethane and isocyanurate formation catalysts.
Claim 11
Dependent Claim
15 words
A composition of claim 9 having a mixture of a polyurethane and isocyanurate formation catalysts.
Claim 12
Dependent Claim
11 words
A composition of claim 1 further comprising a free-radical activation catalyst.
Claim 13
Dependent Claim
31 words
A composition of claim 1 further comprising an amount of polyisocyanate wherein the mol ratio of hydroxyl groups on said polyol to said isocyanate groups on said polyisocyanate ranges from 0.66-0.95.
Claim 14
Dependent Claim
38 words
A composition of claim 12 wherein said polyisocyanates are selected from 4,4'-diphenyl methane diisocyanate, 2,4- and 2,6- toluene diisocyanate and mixtures thereof, isophorone diisocyanates, 4,4'-dicyclohexylmethane diisocyanate, polymethylene polyphenyl polyisocyanates having 2-6 isocyanate groups per molecular and mixtures thereof.
Claim 15
Dependent Claim
24 words
A composition of claim 13 wherein said polyisocyanate has an average of 2.7 isocyanate groups per mol and said hydroxy/isocyanate mol ratio is 0.66-0.95.
Claim 16
Dependent Claim
9 words
A composition of claim 12 comprising a reinforcing filler.
Claim 17
Dependent Claim
35 words
A composition of claim 14 wherein said reinforcing filler is selected from the group consisting of glass fibers, graphite fibers, asbestos fibers, fibers derived from organic polymers, ranging in size from fibrids to continuous filaments.
Claim 18
Dependent Claim
25 words
A handleable tractable composition made by permitting the composition of claims 13, 14, 15 or 16 to thicken by the formation of urethanes and isocyanurates.
Claim 19
Dependent Claim
29 words
A fully-cured intractble composition made by the process of shaping a composition of claim 17 and thereafter copolymerizing said ethylenically unsaturated monomer with said polyisocyanurate resin by free-radical activation.
Claim 20
Dependent Claim
82 words
A resin blend of claim 1 comprising 40-50% by weight of vinyl isocyanurate resin derived from a condensation product of about 2.7 parts by weight hydroxypropyl methacrylate with 3.1 parts by weight toluene diisocyanate, 40-60% by weight styrene, minor amounts of a stabilizer selected from the group consisting of hydroquinone, parabenzoquinone, toluhydroquinone, phenothiazine, 2.5-5% by weight polyoxypropylene (2.2) bisphenol A and catalytic amounts of catalysts selected from the groups consisting of triethylamine, polyoxypropylene (3) polyoxyethylene (1) ethylene diamine and dibutyl tin dilaurate.
Claim 21
Dependent Claim
29 words
A composition of claim 19 having incorporated therewith 0.03-0.045 parts of polymethylene polyphenyl isocyanate having an average of 2.7 NCO groups per mol per part of said resin blend.
Claim 22
Dependent Claim
13 words
A composition of claim 19 comprising 50-80% by weight glass fiber reinforcing filler.
Claim 23
Dependent Claim
10 words
A composition of claim 19 comprising a free-radical activation catalyst.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |