US4048179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing water-dilutable, heat-curing coating compositions
Assignee: Novartis Corp
•
Filing: 1975-10-01
•
Granted: 1977-09-13
•
Expires: 1995-10-01
Abstract
Abstract A process for preparing water-dilutable, heat-curing coating compositions comprises (a) reacting an aromatic polyglycidyl ether with a polyethylene glycol in the presence of 0 to 20% of a polyhydric phenol, (b) adding an aminoplast curing agent, and (c) diluting with water to give a stable aqueous composition.
Inventors
- 👤 Kwan Ting Shen
- 👤 John Allister Gannon
- 👤 Robert Charles Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:31
CPC Classifications
C; C09; C09D; C09D163/00; C09D171/00; C09D171/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
156 words
A process for preparing water-dilutable, heat-curing coating compositions which comprises a. reacting an aromatic polyglycidyl ether having a molecular weight in the range of 360 to 500 with a polyethylene glycol having an average molecular weight in the range of 400 to 800 in the presence of 0 to 20% by weight of a polyhydric phenol to form a water-dilutable, hydroxy-containing adduct, wherein the moles of aromatic polyglycidyl ether to combined moles of polyethylene glycol plus polyhydric phenol are in the ratio of 1.0/1.0 to 3.0/1.0 and wherein the moles of polyethylene glycol to moles of polyhydric phenol are in the ratio of 1.0/0.0 to 1.0/1.5, b. adding 5 to 50% by weight of solids of an aminoplast curing agent, and c. diluting with water to bring the total percent solids in the range of 10 to 80% by weight and to yield a stable, aqueous composition containing no particles larger in size than 0.1 micron.
Claim 2
Dependent Claim
156 words
A process for preparing water-dilutable, heat-curing coating compositions which comprises a. reacting an aromatic polyglycidyl ether having a molecular weight in the range of 360 to 500 with a polyethylene glycol having an average molecular weight in the range of 400 to 800 in the presence of 0 to 20% by weight of a polyhydric phenol to form a water-dilutable, hydroxy-containing adduct, wherein the moles of aromatic polyglycidyl ether to combined moles of polyethylene glycol plus polyhydric phenol are in the ratio of 1.0/1.0 to 3.0/1.0 and wherein the moles of polyethylene glycol to moles of polyhydric phenol are in the ratio of 1.0/0.0 to 1.0/1.5, b. adding 5 to 50% by weight of solids of an aminoplast curing agent, and c. diluting with water to bring the total percent solids in the range of 10 to 80% by weight and to yield a stable, aqueous composition containing no particles larger in size than 0.1 micron.
Claim 3
Dependent Claim
49 words
A process according to claim 1 wherein the aromatic polyglycidyl ether has a molecular weight in the range of 360 to 400, the polyethylene glycol has an average molecular weight in the range of 400 to 600, and the amount of polyhydric phenol is 0 to 20% by weight.
Claim 4
Dependent Claim
17 words
The process according to claim 1 wherein the polyethylene glycol has an average molecular weight of 600.
Claim 5
Dependent Claim
30 words
The process according to claim 1 wherein the moles of aromatic polyglycidyl ether to combined moles of polyethylene glycol plus polyhydric phenol are in the ratio of 1.25/1.0 to 1.35/1.0.
Claim 6
Dependent Claim
21 words
The process according to claim 1 wherein the total percent solids are in the range of 30 to 70% by weight.
Claim 7
Dependent Claim
21 words
The process according to claim 1 wherein the total percent solids are in the range of 40 to 60% by weight.
Claim 8
Dependent Claim
24 words
The process according to claim 1 wherein the aminoplast curing agent is present in the amount of 15 to 40% by weight of solids.
Claim 9
Dependent Claim
24 words
The process according to claim 1 wherein the aminoplast curing agent is present in the amount of 20 to 30% by weight of solids.
Claim 10
Dependent Claim
16 words
The process according to claim 1 wherein the aminoplast curing agent is a methylated urea-formaldehyde resin.
Claim 11
Dependent Claim
17 words
The process according to claim 1 wherein the aminoplast curing agent is a methoxy methyl melamineformaldehyde resin.
Claim 12
Dependent Claim
13 words
The process according to claim 1 wherein the aminoplast curing agent is hexamethoxymethylmelamine.
Claim 13
Dependent Claim
17 words
The process according to claim 1 wherein the aromatic polyglycidyl ether is derived from 2,2-bis(4-hydroxyphenyl)propane or bis(4-hydroxyphenyl)methane.
Claim 14
Dependent Claim
15 words
The process according to claim 1 wherein the aromatic polyglycidyl ether is derived from 2,2-bis(4-hydroxyphenyl)propane.
Claim 15
Dependent Claim
40 words
The process according to claim 1 wherein the reaction of the aromatic polyglycidyl ether and polyethylene glycol in the presence of 0 to 20% by weight a polyhydric phenol is carried out at a temperature of 150° to 250° C.
Claim 16
Dependent Claim
20 words
The process according to claim 14 wherein the reaction is carried out at a temperature of 200° to 230° C.
Claim 17
Dependent Claim
22 words
The process according to claim 1 wherein the water-dilutable, hydroxy-containing adduct has an epoxy value of between 0.001 to 0.10 equivalents/100 grams.
Claim 18
Dependent Claim
22 words
The process according to claim 1 wherein the water-dilutable, hydroxy-containing adduct has an epoxy value of between 0.015 to 0.075 equivalents/100 grams.
Claim 19
Dependent Claim
18 words
A water-dilutable, heat-curing coating composition consisting essentially of the product obtained according to the process of claim 1.
References Cited (Backward Citations)
US2731444A
Cited
US2947717A
Cited
US2897163A
Cited
US3118848A
Cited
US3182099A
Cited
US3297519A
Cited
US3844998A
Cited
US3959202A
Cited
US3960983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |