Patent US4659618A successfully refreshed from Google Patents.
US4659618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite molded product
Assignee: Mitsubishi Chemical Corp
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Filing: 1986-07-23
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Granted: 1987-04-21
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Expires: 2006-07-23
Abstract
Abstract A composite molded product according to the present invention has the structure that an olefin-based resin molded product and a urethane foam are integrally laminated with an adhesive resin layer of the invention.
Inventors
- 👤 Takao Yazaki
- 👤 Satoru Hattori
- 👤 Kazuhide Hattori
- 👤 Takumi Matsuno
- 👤 Nobuhiro Shibuya
- 👤 Kazuhide Hayama
- 👤 Isao Itoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:09
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B32B5/00; B32B5/18; B32B27/00; B32B27/06; B32B27/065; B32B27/32; F; F25; F25D; F25D23/00; F25D23/06; F25D23/062; F25D23/064; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2323/00; B32B2323/10; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/249993; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/31587
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
A composite molded product having a structure that an olefin-based resin molded product and a urethane foam are integrally laminated with an adhesive resin layer, said adhesive resin having a composition comprising (A) 55 to 90% by weight of an olefin-based resin; (B) 1 to 30% by weight of an ethylene/acrylic acid copolymer; and (C) 10 to 30% by weight of a styrene-based resin.
Claim 2
Dependent Claim
64 words
A composite molded product having a structure that an olefin-based resin molded product and a urethane foam are integrally laminated with an adhesive resin layer, said adhesive resin having a composition comprising (A) 55 to 90% by weight of an olefin-based resin; (B) 1 to 30% by weight of an ethylene/acrylic acid copolymer; and (C) 10 to 30% by weight of a styrene-based resin.
Claim 3
Dependent Claim
72 words
The composite molded product as in claim 1, wherein the olefin-based resin molded product is a laminate of a propylene homopolymer as a surface layer and a substrate having a composition comprising (a) 20 to 80% by weight of a polypropylene; (b) 10 to 80% by weight of a polyethylene; (c) 0 to 35% by weight of a styrene-based resin; and (d) 0 to 65% by weight of an inorganic fine powder.
Claim 4
Dependent Claim
55 words
The composite molded product as in claim 2, wherein the substrate has a composition comprising (a) 40 to 70% by weight of the polypropylene; (b) 10 to 55% by weight of the polyethylene; (c) 5 to 25% by weight of the styrene-based resin; and (d) 5 to 55% by weight of the inorganic fine powder.
Claim 5
Dependent Claim
29 words
The composite molded product as in claim 1, wherein the olefin-based resin in the adhesive composition is the same type of the olefin-based resin for forming the molded product.
Claim 6
Dependent Claim
19 words
The composite molded product as in claim 1, wherein the olefin-based resin in the adhesive composition is a polypropylene.
Claim 7
Dependent Claim
16 words
The composite molded product as in claim 2, wherein the polypropylene is a propylene/ethylene block copolymer.
Claim 8
Dependent Claim
16 words
The composite molded product as in claim 3, wherein the polypropylene is a propylene/ethylene block copolymer.
Claim 9
Dependent Claim
16 words
The composite molded product as in claim 5, wherein the polypropylene is a propylene/ethylene block copolymer.
References Cited (Backward Citations)
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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) | 1990-04-20 | 1990-10-20 | 1991-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-20 | 1994-10-20 | 1995-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-20 | 1998-10-20 | 1999-04-21 | $7700.00 | Window Closed / Lapsed |