Patent US4784904A successfully refreshed from Google Patents.
US4784904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced shaped article
Assignee: Huntsman International LLC
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Filing: 1986-07-01
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Granted: 1988-11-15
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Expires: 2006-07-01
Abstract
Abstract The invention relates to a method for producing shaped articles comprising a thermoplastics show surface and a backing layer of a rigid polyurethane or polyisocyanurate foam by applying a foamable polyurethane or polyisocyanurate composition which is substantially free from appreciable amounts of halocarbon blowing agents, in a closed mould to one face of a shaped thermoplastic sheet provided to one of the matching parts constituting said mould.
Inventors
- 👤 Richard Wood
- 👤 Gerald N. Nicholl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:37
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B32; B32B; B32B27/00; B32B27/06; B32B27/065; B32B1/00; B32B5/00; B32B5/18; B32B5/20; C; C08; C08J; C08J9/00; C08J9/02; B29K; B29K2075/00; B32B2262/00; B32B2262/10; B32B2262/101; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; C08J2375/00; C08J2375/04; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249986; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31547
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
31 words
Shaped article having a show surface of thermoplastic material with a reinforcement of a rigid polyurethane or polyisocyanurate foam, characterised in that the foam is substantially free from halocarbon blowing agent.
Claim 2
Dependent Claim
31 words
Shaped article having a show surface of thermoplastic material with a reinforcement of a rigid polyurethane or polyisocyanurate foam, characterised in that the foam is substantially free from halocarbon blowing agent.
Claim 3
Dependent Claim
14 words
An article according to claim 1, wherein said thermoplastic material is an acrylic polymer.
Claim 4
Dependent Claim
81 words
In a process for producing a shaped article comprising a thermoplastic show surface and a backing layer of a rigid polyurethane or polyisocyanurate foam firmly bounded to the thermoplastic show surface, by applying a foamable polyurethane or polyisocyanurate composition in a closed mould to one face of a shaped thermoplastic sheet provided to one of the matching parts constituting said mould, the improvement which consists in using a foamable polyurethane or polyisocyanurate composition which is substantially free from halocarbon blowing agents.
Claim 5
Dependent Claim
81 words
In a process for producing a shaped article comprising a thermoplastic show surface and a backing layer of a rigid polyurethane or polyisocyanurate foam firmly bounded to the thermoplastic show surface, by applying a foamable polyurethane or polyisocyanurate composition in a closed mould to one face of a shaped thermoplastic sheet provided to one of the matching parts constituting said mould, the improvement which consists in using a foamable polyurethane or polyisocyanurate composition which is substantially free from halocarbon blowing agents.
Claim 6
Dependent Claim
14 words
Method according to claim 3, characterised in that water is used as blowing agent.
Claim 7
Dependent Claim
23 words
Method according to claim 4 characterised in that the water is used as an additive to the polyol component of the foamable composition.
Claim 8
Dependent Claim
22 words
Method according to claim 5 characterised in that 0.05 to 1% by weight of water is used based on the polyol weight.
Claim 9
Dependent Claim
20 words
Method according to claim 4, characterised in that the foamable composition also contains short glass fibers dispersed in the composition.
Claim 10
Dependent Claim
97 words
In a process for producing a shaped article comprising a thermoplastic show surface consisting of an acrylic sheet or a laminate of an acrylic polymer and an acrylonitrile/butadiene/styrene copolymer and a backing layer of a rigid polyurethane or polyisocyanurate foam firmly bounded to the thermoplastic show surface, by applying a foamable polyurethane or polyisocyanurate composition in a closed mould to one face of a shaped thermoplastic sheet provided to one of the matching parts constituting said mould, the improvement which consists in using a foamable polyurethane or polyisocyanurate composition which is substantially free from halocarbon blowing agents.
Claim 11
Dependent Claim
97 words
In a process for producing a shaped article comprising a thermoplastic show surface consisting of an acrylic sheet or a laminate of an acrylic polymer and an acrylonitrile/butadiene/styrene copolymer and a backing layer of a rigid polyurethane or polyisocyanurate foam firmly bounded to the thermoplastic show surface, by applying a foamable polyurethane or polyisocyanurate composition in a closed mould to one face of a shaped thermoplastic sheet provided to one of the matching parts constituting said mould, the improvement which consists in using a foamable polyurethane or polyisocyanurate composition which is substantially free from halocarbon blowing agents.
Claim 12
Dependent Claim
14 words
A method according to claim 8, wherein water is used as the blowing agent.
Claim 13
Dependent Claim
17 words
A method according to claim 8, wherein the foamable composition also contains short glass fibers dispersed therein.
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) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |