Patent US4117032A successfully refreshed from Google Patents.
US4117032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire coating powder
Assignee: Ranbar Electrical Materials Inc
•
Filing: 1976-09-23
•
Granted: 1978-09-26
•
Expires: 1996-09-23
Abstract
Abstract A wire coating powder is prepared by first formulating a solventless, aromatic polyester-amide-imide which is the reaction product of an aromatic diamine, an aromatic compound consisting of trimellitic anhydride, acid, or acid halide, and about 35 to about 100 mole % in excess of the stoichiometric amount needed to react with said aromatic compound of polyol. A coating powder is prepared by hot melt mixing, cooling, and grinding a mixture of the polyester-amide-imide with straight polyester and a reactive solid or liquid aromatic monomer or prepolymer.
Inventors
- 👤 James R. Kwiecinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:19
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/303; H01B3/306; C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/16; C08L; C08L79/00; C08L79/04; C08L79/08; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
205 words
A coating prepared by hot melt-mixing, cooling, and grinding (A) a coating powder composition which comprises a solventless, aromatic polyester-amide-imide which comprises the reaction product of (1) an aromatic diamine; (2) about 100 to about 110 mole % (of the stoichiometric amount needed to react with said diamine) of a trimellitic compound selected from the group consisting of trimellitic anhydride, trimellitic acid, trimellitic acid halide, and mixtures thereof; and (3) about 35 to about 100 mole % in excess of the stoichiometric amount needed to react with said trimellitic compound of a polyol, admixed with (B) an aromatic straight polyester in a weight ratio of about 9:1 to about 2:1, wherein said aromatic straight polyester is the reaction product of an aromatic straight polyester composition which comprises (1) about 25 to about 45 mole % of a non-cyclic polyol having 2 to 3 hydroxyals; (2) about 5 to about 15 mole % tris (2-hydroxy-ethyl)isocyanurate; (3) about 40 to about 60 mole % of an aromatic di-acid, di-ester, or di-functional mono-anhydride; and (4) about 0.1 to about 0.5 mole % of a catalyst; and (C) a reactive aromatic monomer, pre-polymer, or mixtures thereof in a weight ratio (to said polyester-amide-imide) of about 1:6 to about 1:9.
Claim 2
Dependent Claim
205 words
A coating prepared by hot melt-mixing, cooling, and grinding (A) a coating powder composition which comprises a solventless, aromatic polyester-amide-imide which comprises the reaction product of (1) an aromatic diamine; (2) about 100 to about 110 mole % (of the stoichiometric amount needed to react with said diamine) of a trimellitic compound selected from the group consisting of trimellitic anhydride, trimellitic acid, trimellitic acid halide, and mixtures thereof; and (3) about 35 to about 100 mole % in excess of the stoichiometric amount needed to react with said trimellitic compound of a polyol, admixed with (B) an aromatic straight polyester in a weight ratio of about 9:1 to about 2:1, wherein said aromatic straight polyester is the reaction product of an aromatic straight polyester composition which comprises (1) about 25 to about 45 mole % of a non-cyclic polyol having 2 to 3 hydroxyals; (2) about 5 to about 15 mole % tris (2-hydroxy-ethyl)isocyanurate; (3) about 40 to about 60 mole % of an aromatic di-acid, di-ester, or di-functional mono-anhydride; and (4) about 0.1 to about 0.5 mole % of a catalyst; and (C) a reactive aromatic monomer, pre-polymer, or mixtures thereof in a weight ratio (to said polyester-amide-imide) of about 1:6 to about 1:9.
Claim 3
Dependent Claim
14 words
A coating powder according to claim 1, wherein said non-cyclic polyol is ethylene glycol.
Claim 4
Dependent Claim
14 words
A coating powder according to claim 1, wherein said aromatic di-ester is dimethyl terephthalate.
Claim 5
Dependent Claim
14 words
A coating powder according to claim 1, wherein said catalyst is tetra isopropyl titanate.
Claim 6
Dependent Claim
26 words
A coating powder according to claim 1, wherein said aromatic straight polyester composition includes up to about 15 mole % of an unsaturated anhydride or di-acid.
Claim 7
Dependent Claim
14 words
A coating powder according to claim 5 wherein said unsaturated anhydride is maleic anhydride.
Claim 8
Dependent Claim
21 words
A coating powder according to claim 1 wherein said reactive solid aromatic monomer or prepolymer is a pre-polymer of diallyl isophthalate.
Claim 9
Dependent Claim
23 words
A coating powder according to claim 1 wherein said coating powder composition includes about 10 to about 15% of a highly cross-linked polyester.
Claim 10
Dependent Claim
19 words
A coating powder according to claim 8 wherein said highly cross-linked polyester is pre-reacted with the aromatic straight polyester.
Claim 11
Dependent Claim
54 words
A coating powder according to claim 8 wherein said highly cross-linked polyester is the reaction product of a composition which comprises about 40 to about 60 mole % THEIC and about 40 to about 60 mole % of a compound selected from the group consisting of aromatic di-acids, aromatic di-functional mono-anhydrides, and mixtures thereof.
Claim 12
Dependent Claim
23 words
A coating powder according to claim 1 wherein said coating powder composition includes about 0.1 to about 2% of a flow control agent.
Claim 13
Dependent Claim
14 words
A coating powder according to claim 1 wherein said trimellitic compound is trimellitic anhydride.
Claim 14
Dependent Claim
15 words
A coating powder according to claim 1 wherein said aromatic diamine is meta phenylene diamine.
Claim 15
Dependent Claim
45 words
A coating powder according to claim 1 wherein said polyol is selected from the group consisting of tris (2-hydroxyethyl) isocyanurate, a mixture of about 85 to about 95 mole % ethylene glycol, and about 5 to about 15 mole % triethylene glycol, and mixtures thereof.
Claim 16
Dependent Claim
45 words
A coating powder according to claim 1 wherein said reaction product includes about 3 to about 25 mole % (based on total moles in total reaction product) of a second aromatic compound selected from the group consisting of mono-anhydride, di-acid, tri-acid, di-ester, and mixtures thereof.
Claim 17
Dependent Claim
42 words
A coating powder according to claim 15 wherein said second aromatic compound is a mixture of about 0 to about 75 mole % trimellitic anhydride and about 0 to about 75 mole % dimethylterephthalate (based on total moles in that reaction product).
Claim 18
Dependent Claim
28 words
A coating powder according to claim 1 wherein said reaction-product is prepared with about 0.01 to about 1% by weight (based on reaction product weight) of a catalyst.
Claim 19
Dependent Claim
14 words
A coating powder according to claim 17 wherein said catalyst is tetra isopropyl titanate.
Claim 20
Dependent Claim
31 words
A coating powder according to claim 1 which includes up to about 17 mole % of an unsaturated compound selected from the group consisting of unsaturated monoanhydrides, di-acids, and mixtures thereof.
Claim 21
Dependent Claim
14 words
A coating powder according to claim 19 wherein said unsaturated compound is maleic anhydride.
References Cited (Backward Citations)
GB1093734A
Cited
GB1101024A
Cited
US3415903A
Cited
US3555113A
Cited
US3919144A
Cited
US4008195A
Cited
US4018742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |