US4086292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface-coating binders
Assignee: BASF SE
•
Filing: 1976-08-12
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Granted: 1978-04-25
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Expires: 1996-08-12
Abstract
Abstract A surface-coating binder which is substantially free from epoxide groups is obtained by reacting Mannich bases, obtained from condensed phenols, secondary amines which contain at least one hydroxyalkyl group, and formaldehyde, with epoxy resins having an epoxide value of from 0.15 to 0.6, which carry blocked isocyanate groups. In the protonized form, the binders may be used for the cationic electrocoating of metal articles.
Inventors
- 👤 Fritz Erdmann Kempter
- 👤 Heinrich Hartmann
- 👤 Herbert Spoor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:09
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/34; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/621; C08G59/623; C09; C09D; C09D163/00; C09D5/00; C09D5/44; C09D5/4419
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
93 words
A surface-coating binder which is substantially free from epoxide groups and is obtained by reacting (a) 15 to 80% by weight of Mannich bases obtained from (a 1 ) condensed phenols, (a 2 ) secondary amines which contain at least one hydroxyalkyl group and (a 3 ) formaldehyde with (B) 85 to 20% by weight of epoxy resins having an epoxide value of from 0.15 to 0.6, which are virtually free from free isocyanate groups, carry blocked isocyanate groups and are prepared by the reaction of hydroxy-containing epoxy resins with partially blocked diisocyanates.
Claim 2
Dependent Claim
93 words
A surface-coating binder which is substantially free from epoxide groups and is obtained by reacting (a) 15 to 80% by weight of Mannich bases obtained from (a 1 ) condensed phenols, (a 2 ) secondary amines which contain at least one hydroxyalkyl group and (a 3 ) formaldehyde with (B) 85 to 20% by weight of epoxy resins having an epoxide value of from 0.15 to 0.6, which are virtually free from free isocyanate groups, carry blocked isocyanate groups and are prepared by the reaction of hydroxy-containing epoxy resins with partially blocked diisocyanates.
Claim 3
Dependent Claim
35 words
A surface-coating binder as claimed in claim 1, wherein the Mannich bases (A) have been reacted with a mixture of epoxy resins, which carry blocked isocyanate groups, and epoxy resins, which carry blocked isocyanate groups.
Claim 4
Dependent Claim
25 words
A surface-coating binder as claimed in claim 1, wherein the component (a 1 ) is a polyhydric phenol which contains at least two aromatic rings.
Claim 5
Dependent Claim
17 words
A surface-coating binder as claimed in claim 1, wherein the component (a 1 ) is bisphenol A.
Claim 6
Dependent Claim
34 words
A surface-coating binder as claimed in claim 1, wherein the component (a 1 ) is a reaction product, which is practically free from epoxide groups, of glycidyl ethers of bisphenol A with bisphenol A.
Claim 7
Dependent Claim
35 words
A surface-coating binder as claimed in claim 1, wherein the component (a 1 ) is a reaction product, which is practically free from epoxide groups, of glycidyl ethers of polyhydric aliphatic alcohols with bisphenol A.
Claim 8
Dependent Claim
36 words
A surface-coating binder as claimed in claim 1, wherein the component (a 1 ) is a reaction product, which is practically free from epoxide groups, of glycidyl ethers of bisphenol A with bisphenol A and phenol.
Claim 9
Dependent Claim
37 words
A surface-coating binder as claimed in claim 1, wherein the component (a 1 ) is a reaction product, which is practically free from epoxide groups, of glycidyl ethers of polyhydric aliphatic alcohols with bisphenol A and phenol.
Claim 10
Dependent Claim
26 words
A surface-coating binder as claimed in claim 1, wherein the component (a 2 ) contains one or more compounds from the group comprising diethanolamine and alkylalkanolamines.
Claim 11
Dependent Claim
30 words
A surface-coating binder as claimed in claim 1, wherein the component (B) is a reaction product of partially blocked diisocyanates and hydroxyl-containing epoxy resins based on pentaerythritol, trimethylolpropane or glycerol.
Claim 12
Dependent Claim
51 words
A surface-coating binder as claimed in claim 1, which has been manufactured by reacting from 15 to 80 percent by weight of component (A) with from 85 to 20 percent by weight of component (B) and up to 30 percent by weight of an epoxy which is free from urethane groups.
Claim 13
Dependent Claim
16 words
A surface coating binder as claimed in claim 1, wherein the surface coating binder is protonized.
References Cited (Backward Citations)
GB763347A
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US3285991A
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US3462237A
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US3632665A
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US3790606A
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US3984376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |