US4356230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded plastic product having a plastic substrate containing a filler and an in-mold plastic coating firmly bonded thereon and a process for its manufacture
Assignee: Thomas and Betts Holdings Inc
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Filing: 1980-07-10
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Granted: 1982-10-26
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Expires: 2000-07-10
Abstract
Abstract A molded part containing plastic substrate and a firmly adherent coating thereon, the plastic substrate containing a filler therein present at least in part in proximity to the surface of the substrate. The coating is transferred from the mold surface to the substrate during the molding operation and during solidification of the molded part. The molded part has a smooth surface as molded and without any subsequent finishing thereof.
Inventors
- 👤 Peter R. Emanuel
- 👤 Syed Salman
- 👤 Gulam Mohiuddin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:01
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0025; B29C37/0028; B29C37/0032; B29C41/00; B29C2037/0035; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0854; B29K2105/0863; B29L; B29L2031/00; B29L2031/30; B29L2031/3044; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T428/31565; Y10T428/31573; Y10T428/31576; Y10T442/00; Y10T442/20; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
67 words
A molded part containing a plastic substrate and a firmly adherent coating thereon, the plastic substrate containing a continuous fibrous reinforcement material therein present at least in part in proximity to the surface of the substrate, said coating having been transferred from the mold surface to the substrate during the molding operation, said molded part having a smooth surface as molded and without any subsequent finishing thereof.
Claim 2
Dependent Claim
67 words
A molded part containing a plastic substrate and a firmly adherent coating thereon, the plastic substrate containing a continuous fibrous reinforcement material therein present at least in part in proximity to the surface of the substrate, said coating having been transferred from the mold surface to the substrate during the molding operation, said molded part having a smooth surface as molded and without any subsequent finishing thereof.
Claim 3
Dependent Claim
14 words
The molded part of claim 1 in which the fibrous reinforcement material is glass.
Claim 4
Dependent Claim
20 words
The molded part of claim 4 in which the glass reinforcement is in the form of a continuous glass mat.
Claim 5
Dependent Claim
14 words
The molded part of claim 1 in which the plastic substrate is a polyurethane.
Claim 6
Dependent Claim
14 words
The molded part of claim 1 in which the plastic substrate is a polyester.
Claim 7
Dependent Claim
13 words
The molded part of claim 1 in which the coating is a polyurethane.
Claim 8
Dependent Claim
14 words
The molded part of claim 1 in which the coating is an acrylic polymer.
Claim 9
Dependent Claim
17 words
The molded part of claim 1 in which the coating has a maximum thickness of 2.0 mils.
Claim 10
Dependent Claim
178 words
A process of producing a molded part containing a plastic substrate and a firmly adherent coating thereon, the plastic substrate containing a continuous fibrous reinforcement material therein present at least in part in proximity to the surface of the substrate, said process comprising coating the surface of a mold, prior to molding said part, with a coating composition containing a reaction promoter for a reactive plastic molding material but not for said coating, introducing the reactive plastic molding material and the filler into the mold, said molding material and filler together comprising said plastic substrate, said reaction promoter in said coating being selected from the group consisting of a catalyst, a crosslinking promoter and a crosslinking initiator for said reactive plastic molding material and being present in an amount sufficient to transfer said coating composition from said mold surface to said substrate and bond it thereto, molding said part and removing said part from the mold, said molded part upon removal from the mold having a smooth surface thereon as molded and without any subsequent surface treatment thereof.
Claim 11
Dependent Claim
178 words
A process of producing a molded part containing a plastic substrate and a firmly adherent coating thereon, the plastic substrate containing a continuous fibrous reinforcement material therein present at least in part in proximity to the surface of the substrate, said process comprising coating the surface of a mold, prior to molding said part, with a coating composition containing a reaction promoter for a reactive plastic molding material but not for said coating, introducing the reactive plastic molding material and the filler into the mold, said molding material and filler together comprising said plastic substrate, said reaction promoter in said coating being selected from the group consisting of a catalyst, a crosslinking promoter and a crosslinking initiator for said reactive plastic molding material and being present in an amount sufficient to transfer said coating composition from said mold surface to said substrate and bond it thereto, molding said part and removing said part from the mold, said molded part upon removal from the mold having a smooth surface thereon as molded and without any subsequent surface treatment thereof.
Claim 12
Dependent Claim
22 words
The process of claim 9 in which the process is reaction injection molding and the reactive plastic molding material is a polyurethane.
Claim 13
Dependent Claim
21 words
The process of claim 9 in which the process is compression molding and the reactive plastic molding material is a polyester.
Claim 14
Dependent Claim
13 words
The process of claim 10 in which the reaction promoter is dibutyltin dilaurate.
Claim 15
Dependent Claim
15 words
The process of claim 11 in which the reaction promoter is a free radical initiator.
Claim 16
Dependent Claim
14 words
The process of claim 13 in which the reaction promoter is an organic peroxide.
Claim 17
Dependent Claim
14 words
The process of claim 13 in which the reaction promoter is an alkyl perester.
Claim 18
Dependent Claim
13 words
The process of claim 13 in which the reaction promoter is an azonitrile.
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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) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |