US4830916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing molded products and laminated structure including the molded products manufactured according to the method
Assignee: Bridgestone Corp
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Filing: 1987-12-11
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Granted: 1989-05-16
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Expires: 2007-12-11
Abstract
Abstract A method of manufacturing molded products (or foamed and molded asphalt/urethane foam products) most suitable for sound-proof, vibration control and sealing members which are applied to the floor panel, dashboard and the like in a car, for example, and more particularly, a method of manufacturing foamed and molded asphalt/urethane products comprising introducing polyalkylene polyol having at least two or more hydroxyls in a molecule and polyisocyanate having two or more isocyanate radicals into a mold together with a catalyst and a foaming agent, and reacting them in it, wherein said polyalkylene polyol includes asphalt previously emulsified and dispersed therein; and a laminated structure including a layer of foamed asphalt/urethane foam made according to the method.
Inventors
- 👤 Hiroya Fukuda
- 👤 Hitoshi Yaguchi
- 👤 Kazuhumi Yokoyama
- 👤 Keiichiro Tabata
- 👤 Takashi Ohashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:36
CPC Classifications
B; B32; B32B; B32B11/00; B32B11/04; B32B5/00; B32B5/18; B32B27/00; B32B27/06; B32B27/065; B32B27/30; B32B27/304; B32B27/40; B32B3/00; B32B3/26; B32B3/30; C; C08; C08J; C08J9/00; C08J9/0061; C08L; C08L75/00; C08L75/04; C08L75/08; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2307/00; B32B2307/10; B32B2307/102; B32B2605/00; B32B2605/08; C08J2375/00; C08J2375/04; C08J2495/00; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31551; Y10T428/31815; Y10T442/00; Y10T442/50; Y10T442/59
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
57 words
A method of manufacturing molded polyurethane foam products comprising introducing polyalkylene polyol having at least two or more hydroxyls in a molecule, and polyisocyanate having two or more isocyanate radicals into a die together with a catalyst and a foaming agent, and reacting them in it, wherein said polyalkylene polyol contains asphalt previously emulsified and dispersed therein.
Claim 2
Independent Claim
57 words
A method of manufacturing molded polyurethane foam products comprising introducing polyalkylene polyol having at least two or more hydroxyls in a molecule, and polyisocyanate having two or more isocyanate radicals into a die together with a catalyst and a foaming agent, and reacting them in it, wherein said polyalkylene polyol contains asphalt previously emulsified and dispersed therein.
Claim 3
Dependent Claim
66 words
A laminated structure including a layer of foamed asphalt/urethane foam, wherein said asphalt/urethane foam is a foamed and molded product obtained by introducing polyalkylene polyol having at least two or more hydroxyls in a molecule and asphalt previously emulsified and dispersed therein, and oplyisocyanate having two or more isocyanate radicals into a mold together with a catalyst and a foaming agent, and reacting them in it.
Claim 4
Dependent Claim
66 words
A laminated structure including a layer of foamed asphalt/urethane foam, wherein said asphalt/urethane foam is a foamed and molded product obtained by introducing polyalkylene polyol having at least two or more hydroxyls in a molecule and asphalt previously emulsified and dispersed therein, and oplyisocyanate having two or more isocyanate radicals into a mold together with a catalyst and a foaming agent, and reacting them in it.
Claim 5
Dependent Claim
96 words
A laminated structure including a sound-proof structure for cars comprising a first layer of foamed asphalt/urethane foam, an intermediate layer of a plastic sheet placed on the foamed asphalt/urethane foam layer, and a third layer of an acoustical material, wherein said foamed asphalt/urethane foam is a foamed and molded product obtained by introducing polyalkylene polyol having at least two or more hydroxyls in a molecule and asphalt previously emulsified and dispersed therein, and polyisocyanate having two or more isocyanate radicals into a mold together with a catalyst an a foaming agent, and reacting them in it.
Claim 6
Dependent Claim
96 words
A laminated structure including a sound-proof structure for cars comprising a first layer of foamed asphalt/urethane foam, an intermediate layer of a plastic sheet placed on the foamed asphalt/urethane foam layer, and a third layer of an acoustical material, wherein said foamed asphalt/urethane foam is a foamed and molded product obtained by introducing polyalkylene polyol having at least two or more hydroxyls in a molecule and asphalt previously emulsified and dispersed therein, and polyisocyanate having two or more isocyanate radicals into a mold together with a catalyst an a foaming agent, and reacting them in it.
Claim 7
Dependent Claim
25 words
A laminated structure according to claim 3 wherien the foamed asphalt/urethane foam layer is molded to fit the uneven surface of a car body panel.
Claim 8
Dependent Claim
22 words
A laminated structure according to claim 3 wherein said acoustical material layer is made by urethane foam or urethane foam chips molded.
Claim 9
Dependent Claim
17 words
A laminated structure according to claim 3, wherein said foamed asphalt/urethane foam layer is provided with openings.
Claim 10
Dependent Claim
25 words
A laminated structure according to claim 2 wherein the foamed asphalt/urethane foam layer is molded to fit the uneven surface of a car body panel.
Claim 11
Dependent Claim
22 words
A laminated structure according to claim 7 wherein said acoustical material layer is made by urethane foam or urethane foam chips molded.
Claim 12
Dependent Claim
17 words
A laminated structure according to claim 7 wherein said foamed asphalt/urethane foam layer is provided with openings.
Claim 13
Dependent Claim
17 words
A laminated structure according to claim 8 wherein said foamed asphalt/urethane foam layer is provided with openings.
Claim 14
Dependent Claim
31 words
A laminated structure according to any one of claims 3, 4, 5, 6, 7, 8, 9 or 10, further comprising a sound insulation surface layer lined with a thermoplastic resin layer.
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) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |