US4400476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paint adhesion for RIM parts
Assignee: Air Products and Chemicals Inc
•
Filing: 1982-03-15
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Granted: 1983-08-23
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Expires: 2002-03-15
Abstract
Abstract The addition of a small amount of a halogen compound, e.g. chloroethyl phosphate, in a process producing elastomeric polyurethane RIM parts using tertiary amines as the chief catalyst component results in scavenging the residual amines after the part has been cured by annealing. The parts from such a process can be coated with a wide variety of enamels having a high solids content and completely cured to result in a higher degree of adhesive between the coating and the part's surface than those parts from a process without the use of such a halogen.
Inventors
- 👤 Ibrahim S. Bechara
- 👤 Rocco L. Mascioli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:20
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1875; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/05; C08J9/00; C08J9/0014; C08K; C08K5/00; C08K5/02; C08K5/04; C08K5/05; C08J2375/00; C08J2375/04; C08J2461/00; Y; Y10; Y10S; Y10S264/00; Y10S264/83; Y10S521/00; Y10S521/906
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
70 words
An elastomeric composition for the production of RIM polyurethane products comprising per hundred parts of polyether polyol therein: 10 to 50 parts of a diol chain extender; 50 to 300 parts polyisocyanate; 0 to 4 parts of volatile fluorocarbon blowing agent, 0.1 to 1.0 parts of tertiary amine catalyst; and 0 to 0.2 parts of organo tin catalyst; together with 0.1 to 3 parts of a reactive organic halogen compound.
Claim 2
Dependent Claim
70 words
An elastomeric composition for the production of RIM polyurethane products comprising per hundred parts of polyether polyol therein: 10 to 50 parts of a diol chain extender; 50 to 300 parts polyisocyanate; 0 to 4 parts of volatile fluorocarbon blowing agent, 0.1 to 1.0 parts of tertiary amine catalyst; and 0 to 0.2 parts of organo tin catalyst; together with 0.1 to 3 parts of a reactive organic halogen compound.
Claim 3
Dependent Claim
17 words
An elastomeric composition as defined in claim 1 wherein said tertiary amine catalyst is a ditertiary amine.
Claim 4
Dependent Claim
14 words
An elastomeric composition as defined in claim 1 wherein said tertiary amine is triethylenediamine.
Claim 5
Dependent Claim
23 words
An elastomeric composition as defined in claim 1 containing 0.1 to 1.0 parts of triethylenediamine and 0.01 to 0.04 parts of organo-tin catalyst.
Claim 6
Dependent Claim
18 words
An elastomeric composition as defined in claim 1 or 3 wherein said organic halogen compound is a chlorophosphate.
Claim 7
Dependent Claim
17 words
An elastomeric composition as defined in claim 1 or 3 wherein said organic halogen compound is tris(chloroethyl)phosphate.
References Cited (Backward Citations)
US3803064A
Cited
US4273885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |