US4281096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacturing process for polyurethane auto parts and auto parts manufactured thereby
Assignee: Toyota Motor Corp
•
Filing: 1979-12-13
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Granted: 1981-07-28
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Expires: 1999-12-13
Abstract
Abstract Auto parts prepared from polyurethane are manufactured by a process comprising: (a) preparing a polyol component by blending a stabilizer combination of (A) nickel dibutyldithio carbamate with (B) N-mono- or dimethylphenyl-N'-mono- or dimethylphenylphenylenediamine and/or (C) N,N'-diphenyl-p-phenylenediamine with a polyol and carbon black; (b) reacting said polyol component with a polyisocyanate: and (c) molding said reacted mass.
Inventors
- 👤 Takao Nomura
- 👤 Yoshiro Umemoto
- 👤 Shuichiro Takao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:49
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0066; C08G; C08G18/00; C08G18/06; C08G18/28; C08J9/0014; C08K; C08K3/00; C08K3/02; C08K3/04; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C08K5/36; C08K5/39; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S264/00; Y10S264/83
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
71 words
A process for manufacturing polyurethane based auto parts by reaction-injection molding, comprising: (a) preparing a polyol component by blending a stabilizer combination of from 2-15 parts by weight of (A) nickel dibutyldithiocarbamate and 10 parts by weight of (B) N-mono or dimethylphenyl-N'-mono or dimethylphenyl phenylene diamine and/or (C) N,N'-diphenyl-P-phenylene diamine with a polyol and carbon black; (b) reacting said polyol component with a polyisocyanate; and (c) reaction-injection molding said reacted mass.
Claim 2
Dependent Claim
71 words
A process for manufacturing polyurethane based auto parts by reaction-injection molding, comprising: (a) preparing a polyol component by blending a stabilizer combination of from 2-15 parts by weight of (A) nickel dibutyldithiocarbamate and 10 parts by weight of (B) N-mono or dimethylphenyl-N'-mono or dimethylphenyl phenylene diamine and/or (C) N,N'-diphenyl-P-phenylene diamine with a polyol and carbon black; (b) reacting said polyol component with a polyisocyanate; and (c) reaction-injection molding said reacted mass.
Claim 3
Dependent Claim
17 words
The process of claim 1, wherein the amount of component A ranges from 5-10 parts by weight.
Claim 4
Dependent Claim
33 words
The process of claim 1, wherein from 0.2-2.0 parts by weight of the stabilizer combination composed of components A and B and/or C is blended with 100 parts by weight of said polyol.
Claim 5
Dependent Claim
18 words
The process of claim 3, wherein the amount of said stabilizer combination ranges from 0.5-1.5 parts by weight.
Claim 6
Dependent Claim
24 words
The process of claim 1, wherein from 0.5-2.0 parts by weight of carbon black is blended with 100 parts by weight of said polyol.
Claim 7
Dependent Claim
14 words
The process of claim 1, wherein said polyol is a polyesterpolyol and/or a polyetherpolyol.
Claim 8
Dependent Claim
16 words
The process of claim 1, wherein a dihydric or polyhydric alcohol is combined with said polyol.
Claim 9
Dependent Claim
35 words
The process of claim 6, wherein said polyesterpolyol is the condensation product of ethyleneglycol, diethyleneglycol, propyleneglycol, trimethylolpropane or glycerine with oxalic acid, adipic acid, sebacic acid, maleic acid, fumaric acid, isophthalic acid or terephthalic acid.
Claim 10
Dependent Claim
25 words
The process of claim 6, wherein said polyetherpolyol is the addition reaction product between glycerine, trimethylolpropane, pentaerythritol or sorbitol and ethylene oxide or propylene oxide.
Claim 11
Dependent Claim
13 words
An auto part formulated from polyurethane prepared by the process of claim 1.
References Cited (Backward Citations)
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US3247161A
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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) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |