Patent US4647623A successfully refreshed from Google Patents.
US4647623A
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Process for producing polyisocyanate and resin composition comprising said polyisocyanate for use in paints
Assignee: DIC Corp
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Filing: 1985-09-17
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Granted: 1987-03-03
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Expires: 2005-09-17
Abstract
Abstract A process for producing a polyisocyanate containing an isocyanurate ring which comprises reacting at least one diisocyanate compound selected from the group consisting of alkylene diisocyanates, cycloalkylene diisocyanates and aralkylene diisocyanates with a cycloalkylene diol in the presence of an isocyanurating catalyst; and a resin composition for use in non-yellowing fast-drying urethane paints, comprising (A) the aforesaid polyisocyanate and (B) an acrylic polyol having a number average molecular weight of 2,000 to 30,000 and a hydroxyl value of 20 to 200.
Inventors
- 👤 Mitsuo Kase
- 👤 Noboru Okoshi
- 👤 Kazue Tsuyuzaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:45
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/791; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6225; C08G18/6229; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8009; C08G18/8012; C08G2120/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
42 words
A process for producing a polyisocyanate containing an isocyanurate ring which comprises reacting at least one diisocyanate compound selected from the group consisting of alkylene diisocyanates, cycloalkylene diisocyanates and aralkylene diisocyanates with a cycloalkylene diol in the presence of an isocyanurating catalyst.
Claim 2
Dependent Claim
42 words
A process for producing a polyisocyanate containing an isocyanurate ring which comprises reacting at least one diisocyanate compound selected from the group consisting of alkylene diisocyanates, cycloalkylene diisocyanates and aralkylene diisocyanates with a cycloalkylene diol in the presence of an isocyanurating catalyst.
Claim 3
Dependent Claim
76 words
A resin composition for non-yellowing fast-drying urethane paints, said composition comprising as essential ingredients (A) a polyisocyanate containing an isocyanurate ring obtained by reacting at least one diisocyanate compound selected from the group consisting of alkylene diisocyanates, cycloalkylene diisocyanates and aralkylene diisocyanates with a cycloalkylene diol in the presence of an isocyanurating catalyst, and (B) an acrylic polyol having a number average molecular weight of 2,000 to 30,000 and a hydroxyl value of 20 to 200.
Claim 4
Dependent Claim
76 words
A resin composition for non-yellowing fast-drying urethane paints, said composition comprising as essential ingredients (A) a polyisocyanate containing an isocyanurate ring obtained by reacting at least one diisocyanate compound selected from the group consisting of alkylene diisocyanates, cycloalkylene diisocyanates and aralkylene diisocyanates with a cycloalkylene diol in the presence of an isocyanurating catalyst, and (B) an acrylic polyol having a number average molecular weight of 2,000 to 30,000 and a hydroxyl value of 20 to 200.
Claim 5
Dependent Claim
26 words
The process of claim 1 wherein the diisocyanate compound is a mixture of an alkylene diisocyanate and a cycloalkylene diisocyanate in a weight ratio of 85-55:15-45.
Claim 6
Dependent Claim
26 words
The composition of claim 2 wherein the diisocyanate compound is a mixture of an alkylene diisocyanate and a cycloalkylene diisocyanate in a weight ratio of 85-55:15-45.
Claim 7
Dependent Claim
25 words
The process of claim 1 wherein the diisocyanate compound is a mixture of an alkylene diisocynate and an aralkylene diisocyanate in a weight ratio 95-70:5-30.
Claim 8
Dependent Claim
27 words
The resin composition of claim 2 wherein the diisocyanate compound is a mixture of an alkylene diisocyanate and an aralkylene diisocyanate in a weight ratio of 95-70:5-30.
Claim 9
Dependent Claim
56 words
The process of claim 1 wherein the cycloalkylene diol is a diol having 5 to 30 carbon atoms and containing a 5- to 7-membered rigid ring and is used singly or as a mixture of diols in an amount of about 0.3 to about 30 mole % based on the total amount of the diisocyanate compounds.
Claim 10
Dependent Claim
31 words
The process of claim 1 wherein aralkylene diisocyanate is present in an amount of not more than 50 mole % based on the total amount of alkylene diisocyanate and/or cycloalkylene diisocyanate.
Claim 11
Dependent Claim
31 words
The resin composition of claim 2 wherein the diisocyanate compound contains not more than 50 mole % of aralkylene diisocyanate based on the total amount of alkylene diisocyanate and/or cycloalkylene diisocyanate.
Claim 12
Dependent Claim
186 words
The process of claim: 1 wherein the isocyanurating catalyst is a compound having a low electron density and containing a strongly cationic atom or atomic grouping and is selected from the group consisting of compounds of the general formulae ##STR8## wherein R 1 , R 2 , R 3 , R 5 , R 6 and R 7 are identical or different and each represents a C 1 -C 20 hydrocarbon group or C 1 -C 20 hydrocarbon group containing a hetero atom such as nitrogen, oxygen or sulfur; R4 and R 8 represent a hydrogen atom, a C 1 -C 20 hydrocarbon group or a hydroxyl group containing C 1 -C 20 hydrocarbon group; X 1 .sup.⊖ represents a hydroxyl group, a monocarboxylate anion or a monophenolate anion having a C 1 -C 20 hydrocarbon chain; X 2 2 ⊖ represents a dicarboxylate anion or a diphenolate anion having a C 1 -C 20 hydrocarbon chain; R 9 represents a C 1 -C 15 hydrocarbon group or a C 1 -C 15 hydrocarbon group containing a hetero atom and M e represents sodium or potassium.
Claim 13
Dependent Claim
33 words
The process of claim 1 wherein the isocyanurating catalyst is used in an amount of 0.001 to 0.2% by weight based on the total amount of the diisocyanate compound and the diol charged.
Claim 14
Dependent Claim
25 words
The process of claim 1 wherein the isocyanurating reaction is carried out at a temperature in the range of about 30° to about 120° C.
Claim 15
Dependent Claim
31 words
The process of claim 1 wherein the amount of the polyisocyanate formed is within the range of 20 to 70% by weight based on the total amount of the starting material.
Claim 16
Dependent Claim
21 words
The composition of claim 2 wherein the polyisocyanate (A) containing an isocyanurate ring has a molecular weight of 500 to 2,000.
Claim 17
Dependent Claim
21 words
The composition of claim 2 wherein the acrylic polyols have a glass transition point (Tg) of from 25° to 80° C.
Claim 18
Dependent Claim
37 words
The resin composition of claim 2 wherein the polyisocyanate component (A) and the acrylic polyol component (B) are blended in proportions to provide an equivalent ratio of isocyanate groups and hydroxyl groups, NCO/OH, of 0.3 to 2.0.
Claim 19
Dependent Claim
68 words
The resin composition of claim 2 wherein the acrylic polyol is obtained by radical polymerization of at least one ethylenic hydrocarbon selected from the group consisting of styrene, alpha-methyl styrene, p-methyl styrene, p-methoxy styrene, p-tertbutylstyrene, methyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, 2-ethylhexyl methacrylate, ethyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, 2-ethoxyethyl acrylate, beta-hydroxyethyl methacrylate, beta-hydroxypropyl methacrylate, beta-hydroxyethyl acrylate, diethyl fumarate, di-n-butyl fumarate, diisobutyl fumarate and di-2-ethylhexyl fumarate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |