Patent US3897397A successfully refreshed from Google Patents.
US3897397A
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Urethane coating powder compositions
Assignee: Atlantic Richfield Co
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Filing: 1973-12-13
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Granted: 1975-07-29
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Expires: 1993-12-13
Abstract
Abstract A shelf-stable urethane-type polymer producing coating powder composition is presented comprised of a cyclic nitrile compound and, optionally, a reactive hydrogen-containing compound selected from the class consisting of polyols and polythiols and a condensation-rearrangement catalyst. The preferred cyclic nitrile compounds are the cyclic nitrile carbonates, for example, adipodi(nitrile carbonate), and the preferred reactive hydrogencontaining compounds are hydroxyl-containing polymers, for example, cellulose acetate butyrate. The coating powder composition may also be prepared from a prepolymer of the above compounds. The coating powder composition preferably has a particle size of about 50 to 250 microns.
Inventors
- 👤 Donald H Russell
- 👤 Kurt C Frisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:17
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/701; C09; C09D; C09D5/00; C09D5/03; Y; Y10; Y10S; Y10S524/00; Y10S524/904; Y10S528/00; Y10S528/902
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
43 words
A SHELF-STABLE COATING POWER COMPOSITION HAVING A PARTICLE SIZE RANGE SUCH THAT MOST OF THE PARTICLES HAVE A SIZE OF ABOUT 10 TO 500 MICRONS COMPRISED OF A. 5 TO 100 PARTS BY WEIGHT OF A CYCLIC NITRILE COMPOUND HAVING THE STRUCTUAL FORMULA
Claim 2
Dependent Claim
43 words
A SHELF-STABLE COATING POWER COMPOSITION HAVING A PARTICLE SIZE RANGE SUCH THAT MOST OF THE PARTICLES HAVE A SIZE OF ABOUT 10 TO 500 MICRONS COMPRISED OF A. 5 TO 100 PARTS BY WEIGHT OF A CYCLIC NITRILE COMPOUND HAVING THE STRUCTUAL FORMULA
Claim 3
Dependent Claim
17 words
The composition of claim 1 having a major particle size range of about 50 to 250 microns.
Claim 4
Dependent Claim
105 words
An organic compound containing at least 2 reactive hydrogen groups per molecule selected from the class consisting of hydroxyl radicals, mercapto radicals, and mixtures of these, the relative amounts of 1 and 2 being such that the ratio of cyclic nitrile groups to reactive hydrogen groups present in the reaction mixture is at least 2:1; B. 0.5 to 2.5 equivalents of an organic compound containing at least 2 reactive hydrogen groups per molecule selected from the class consisting of hydroxyl radicals, mercapto radicals, and mixtures of these; C. 0 to 10 parts per 100 parts by weight of (A) and (B) of a condensation-rearrangement catalyst.
Claim 5
Dependent Claim
105 words
An organic compound containing at least 2 reactive hydrogen groups per molecule selected from the class consisting of hydroxyl radicals, mercapto radicals, and mixtures of these, the relative amounts of 1 and 2 being such that the ratio of cyclic nitrile groups to reactive hydrogen groups present in the reaction mixture is at least 2:1; B. 0.5 to 2.5 equivalents of an organic compound containing at least 2 reactive hydrogen groups per molecule selected from the class consisting of hydroxyl radicals, mercapto radicals, and mixtures of these; C. 0 to 10 parts per 100 parts by weight of (A) and (B) of a condensation-rearrangement catalyst.
Claim 6
Dependent Claim
11 words
The composition of claim 2 wherein R is a hydrocarbon radical.
Claim 7
Dependent Claim
11 words
The composition of claim 3 wherein n is 2 to 6.
Claim 8
Dependent Claim
8 words
The composition of claim 4 wherein X is
Claim 9
Dependent Claim
13 words
The composition of claim 5 wherein the cyclic nitrile compound is adipodi(nitrile carbonate).
Claim 10
Dependent Claim
49 words
The composition of claim 1 wherein said cyclic nitrile compound is present in an amount of about 10 to 90 parts and said reactive hydrogen-containing compound is present in an amount of about 90 to 10 parts per 100 parts of total cyclic nitrile compound and reactive hydrogen-containing compound.
Claim 11
Dependent Claim
18 words
The composition of claim 7 wherein the functional groups on the reactive hydrogen-containing compound are predominantly hydroxyl groups.
Claim 12
Dependent Claim
14 words
The composition of claim 7 wherein the reactive hydrogen-containing compound is styrene-vinyl alcohol copolymer.
Claim 13
Dependent Claim
18 words
The composition of claim 7 wherein the reactive hydrogen-containing compound is a polyester polyol or a polyether polyol.
Claim 14
Dependent Claim
18 words
The composition of claim 10 wherein said reactive hydrogen-containing compound has a molecular weight of up to 100,000.
Claim 15
Dependent Claim
14 words
The composition of claim 7 wherein the reactive hydrogen-containing group is cellulose acetate butyrate.
Claim 16
Dependent Claim
12 words
The composition of claim 12 wherein said catalyst includes an alkaline compound.
Claim 17
Dependent Claim
26 words
The composition of claim 7 wherein said catalyst is present in an amount of about 0.01 to 2 parts per 100 parts of (A) and (B).
Claim 18
Dependent Claim
23 words
The composition of claim 14 wherein the ratio of cyclic nitrile functional groups to total reactive hydrogen groups is about 0.7 to 10:1.
Claim 19
Dependent Claim
55 words
A shelf-stable coating powder composition having a particle size of about 50 to 250 microns comprised of A. 10 to 90 parts by weight of adipodi(nitrile carbonate), B. 90 to 10 parts by weight of cellulose acetate butyrate, and C. 0.1 to 2 parts per 100 parts of (A) and (B) of a condensation-rearrangement catalyst.
Claim 20
Dependent Claim
55 words
A shelf-stable coating powder composition having a particle size of about 50 to 250 microns comprised of A. 10 to 90 parts by weight of adipodi(nitrile carbonate), B. 90 to 10 parts by weight of cellulose acetate butyrate, and C. 0.1 to 2 parts per 100 parts of (A) and (B) of a condensation-rearrangement catalyst.
Claim 21
Dependent Claim
25 words
A shelf-stable coating powder composition having a particle size of about 50 to 250 microns comprised of a cyclic nitrile compound having the structural formula
Claim 22
Dependent Claim
25 words
A shelf-stable coating powder composition having a particle size of about 50 to 250 microns comprised of a cyclic nitrile compound having the structural formula
Claim 23
Dependent Claim
13 words
The composition of claim 17 wherein the cyclic nitrile compound is adipodi(nitrile carbonate).
Claim 24
Dependent Claim
34 words
A shelf-stable coating powder composition having a particle size of about 10 to 500 microns comprised of A. 0.5 to 2.5 equivalents of a cyclic nitrile group-terminated prepolymer prepared by the condensation-rearrangement reaction between
Claim 25
Dependent Claim
34 words
A shelf-stable coating powder composition having a particle size of about 10 to 500 microns comprised of A. 0.5 to 2.5 equivalents of a cyclic nitrile group-terminated prepolymer prepared by the condensation-rearrangement reaction between
Claim 26
Dependent Claim
37 words
The composition of claim 19 wherein (1) is adipodi(nitrile carbonate), (B) is a hydrocarbon polyol, and (C) is present in an amount of about 0.1 to 2 parts per 100 parts by weight of (A) and (B).
Claim 27
Dependent Claim
46 words
The composition of claim 19 wherein (A) is a reactive hydrogen group terminated prepolymer prepared by reacting (1) and (2) in relative amounts such that the ratio of reactive hydrogen groups to cyclic nitrile groups is at least 2:1, and (B) is the same as (1).
Claim 28
Dependent Claim
12 words
The composition of claim 21 wherein (1) and (B) are adipodi(nitrile carbonate).
References Cited (Backward Citations)
US3531425A
Cited
US3725340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |