WO1997014733B1 - Coating compositions of an acrylic fluorocarbon polymer and a fluorinated polyisocyanate - Google Patents

Coating compositions of an acrylic fluorocarbon polymer and a fluorinated polyisocyanate

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Publication number
WO1997014733B1
WO1997014733B1 PCT/US1996/016289 US9616289W WO9714733B1 WO 1997014733 B1 WO1997014733 B1 WO 1997014733B1 US 9616289 W US9616289 W US 9616289W WO 9714733 B1 WO9714733 B1 WO 9714733B1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
carbon atoms
ofthe
alkyl
acrylic polymer
Prior art date
Application number
PCT/US1996/016289
Other languages
French (fr)
Other versions
WO1997014733A1 (en
Filing date
Publication date
Priority claimed from US08/543,721 external-priority patent/US5597874A/en
Application filed filed Critical
Priority to EP96936367A priority Critical patent/EP0856021B1/en
Priority to NZ321114A priority patent/NZ321114A/en
Priority to CA002234421A priority patent/CA2234421C/en
Priority to JP51588497A priority patent/JP4074340B2/en
Priority to AU74392/96A priority patent/AU706335B2/en
Priority to DE69603195T priority patent/DE69603195T2/en
Priority to BR9611102A priority patent/BR9611102A/en
Publication of WO1997014733A1 publication Critical patent/WO1997014733A1/en
Publication of WO1997014733B1 publication Critical patent/WO1997014733B1/en

Links

Abstract

A coating composition containing about 45-80 % by weight of a binder and 20-55 % by weight of an organic liquid; wherein the binder contains (A) about 40-90 % by weight, based on the weight of the binder, of an acrylic polymer containing polymerized hydroxyl containing monomers of the following group of hydroxy alkyl acrylate or methacrylates having 1-4 carbon atoms in the alkyl group, and polymerized alkyl acrylates and methacrylates having 1-18 carbon atoms in the alkyl groups, or styrene or any mixtures of the above and 0.1-5.0 % by weight, based on the weight of the acrylic polymer, of polymerized fluoroalkyl containing monomer represented by formula (I) where R is hydrogen or an alkyl group having 1-2 carbon atoms, n is an integer of 1-11 and Rf is a fluoroalkyl containing group having at least 4 carbon atoms and (B) about 10-60 % by weight, based on the weight of the binder, of a fluorinated organic polyisocyanate cross-linking agent.

Claims

AMENDED CLAIMS[received by the International Bureau on 1 April 1997 (01.04.97); original claims 1-12 replaced by amended claims 1-11 (3 pages)]
1. A coating composition containing about 45-80% by weight ofa binder and 20-55% by weight of an organic liquid; wherein the binder comprises (A) about 40-90% by weight, based on the weight ofthe binder, of an acrylic polymer consisting essentially of about 20-45% by weight, based on the weight ofthe acrylic polymer, of polymerized hydroxyl containing monomers selected from the group consisting of hydroxy alkyl acrylate and hydroxy alkyl methacrylates having 1-4 carbon atoms in the alkyl groups, 50
- 79.9% by weight, based on the weight ofthe acrylic polymer, of polymerized monomers selected from the group consisting of alkyl acrylates and alkyl methacrylates having 1 - 18 carbon atoms in the alkyl groups, styrene and any mixtures ofthe above and 0.1 - 5.0% by weight, based on the weight ofthe acrylic polymer, of polymerized fluoroalkyl contaming monomer represented by the formula
CH2= CR C O (CHsJn Rf where R is selected from the group consisting of hydrogen or an alkyl group having 1 - 2 carbon atoms, n is an integer of 1 -
11 and R is a fluoroalkyl containing group having at least 4 carbon atoms and the acrylic polymer having a weight average molecular weight of about 2,000 - 20,000 determined by gel permeation chromatography, and (B) about 10-60% by weight, based on the weight ofthe binder, of a fluorinated organic polyisocyanate crosslinking agent consisting essentially of an adduct ofa fluorinated monofunctional alcohol and an organic polyisocyanate where the fluorinated monofunctional alcohol is represented by the formula
Figure imgf000003_0001
where Rf is as defined above, X is a divalent radical, R3 is H or an alkyl group having 1-4 carbon atoms, n is 1 and m is 1-30 and where about 0.1-33 mole percent of active isocyanate groups are reacted with the fluorinated monofunctional alcohol.
2. The coating composition of Claim 1 in which Rf ofthe fluoroalkyl monomer ofthe acrylic polymer and the fluorinated organic polyisocyanate is a straight chain or branched chain perfluoroalkyl group having 4-20 carbon atoms.
3. The coating compositions of Claim 2 in which the acrylic polymer consists essentially of polymerized monomers of an alkyl methacrylate having 2-6 carbon atoms in the alkyl groups, an alkyl acrylate having 2-8 carbon atoms in the alkyl group, a hydroxy alkyl acrylate having 2-4 carbon atoms in the alkyl group, styrene and a fluoroalkyl containing monomer wherein R is CH3 and n is 2.
4. The coating composition of Claim 3 in which the acrylic polyerm consists essentially of butyl methacrylate, butyl acrylate, styrene, hydroxy propyl acrylate and the perfluoroalkyl contaming monomer.
5. The coating composition of Claim 3 in which the fluoroalkyl containing monomer ofthe acrylic polymer is represented by the formula
Figure imgf000004_0001
where R is as defined in Claim 1,
Rl is a perfluoroalkyl group having 4-12 carbon atoms,
R2 is an alkyl group having 1-4 carbon atoms and n is an integer of 1-
6. The coating composition of Claim 1 in the fluorinated monofunctional alcohol X is -O-, -CH2O-, CH2CH2O-, -SO2N(R4)CH2CH2O-, CH2- where R4 is H or methyl.
7. The coating composition of Claim 1 in which the organic polyisocyanate is an aromatic diisocyanate, aliphatic diisocyanate, cycloaliphatic diisocyanate, aromatic triisocyanate, aliphatic triisocyanate, cycloaliphatic triisocyanate or an oligomer ofa diisocyanate.
19
8. The coating composition of Claim 1 containing about 0.1-10% by weight, based on the weight ofthe binder, of ultraviolet light stabilizers or an antioxidant or mixtures thereof.
9. A substrate coated with a dried and cured layer ofthe composition of Claim 1.
10. A substrate coated with a pigmented base coat on which is coated a clear layer ofthe dried and cured composition of Claim 1.
11. The coated substrate of Claim 10 in which the pigmented base coat contains about 10-40% by weight, based on the weight of binder ofthe base coat, ofa fluorinated polyisocyanate crosslinking agent.
20
PCT/US1996/016289 1995-10-16 1996-10-11 Coating compositions of an acrylic fluorocarbon polymer and a fluorinated polyisocyanate WO1997014733A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP96936367A EP0856021B1 (en) 1995-10-16 1996-10-11 Coating compositions of an acrylic fluorocarbon polymer and a fluorinated polyisocyanate
NZ321114A NZ321114A (en) 1995-10-16 1996-10-11 Coating compositions of an acrylic fluorocarbon polymer and a fluorinated polyisocyanate
CA002234421A CA2234421C (en) 1995-10-16 1996-10-11 Coating compositions of an acrylic fluorocarbon polymer and a fluorinated polyisocyanate
JP51588497A JP4074340B2 (en) 1995-10-16 1996-10-11 Coating composition of acrylic fluorocarbon polymer and fluorinated polyisocyanate
AU74392/96A AU706335B2 (en) 1995-10-16 1996-10-11 Coating compositions of an acrylic fluorocarbon polymer and a fluorinated polyisocyanate
DE69603195T DE69603195T2 (en) 1995-10-16 1996-10-11 COATING COMPOSITIONS OF AN ACRYLIC FLUOROCOLATE POLYMER AND A FLUORINE POLYISOCYANATE
BR9611102A BR9611102A (en) 1995-10-16 1996-10-11 Coating composition and coated substrate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/543,721 US5597874A (en) 1995-10-16 1995-10-16 Coating compositions of an acrylic fluorocarbon polymer and a fluorinated polyisocyanate
US08/543,721 1995-10-16

Publications (2)

Publication Number Publication Date
WO1997014733A1 WO1997014733A1 (en) 1997-04-24
WO1997014733B1 true WO1997014733B1 (en) 1997-05-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/016289 WO1997014733A1 (en) 1995-10-16 1996-10-11 Coating compositions of an acrylic fluorocarbon polymer and a fluorinated polyisocyanate

Country Status (9)

Country Link
US (2) US5597874A (en)
EP (1) EP0856021B1 (en)
JP (1) JP4074340B2 (en)
AU (1) AU706335B2 (en)
BR (1) BR9611102A (en)
CA (1) CA2234421C (en)
DE (1) DE69603195T2 (en)
NZ (1) NZ321114A (en)
WO (1) WO1997014733A1 (en)

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