Patent US5418304A successfully refreshed from Google Patents.
US5418304A
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US
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Scratch-resistant coating agent based on acrylates
Assignee: Roehm GmbH Darmstadt
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Filing: 1994-06-09
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Granted: 1995-05-23
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Expires: 2014-06-09
Abstract
Abstract The invention relates to a coating composition, a method of coating molded articles with the coating composition, and the molded articles so coated, particularly molded articles comprised of thermoplastic or thermoelastic plastics. The coating, in the form of a cured thin layer, is particularly optically clear, scratch-resistant, and weather-resistant. It is produced on the plastic substrate material by polymerization of a layer of flowable coating comprised of the coating material, which layer contains polyfunctional (meth)acrylic monomers, and said layer further contains, as a "leveling" agent, fluoroalkyl (meth)acrylates of formula I ##STR1## where R 1 represents H or CH 3 , and R 2 represents a fluorine-containing alkyl group with 2-20 C atoms.
Inventors
- 👤 Michael Mueller
- 👤 Rolf Neeb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:00
CPC Classifications
C; C09; C09D; C09D4/00; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/046; C08J2333/00; C08J2333/04; C08J2333/06; C08J2333/10; C08J2333/12; C08J2369/00; C08J2433/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
130 words
A scratch-resistant, weather-resistant, polymerized coating having desirable optical properties, prepared by the process comprising: (a) applying to a substrate a polymerizable flowable coating composition, said composition comprising as components (i) one or more multi-functional (meth)acrylate monomers, said multi-functional monomers containing two or more polymerizable carbon-carbon double bonds; (ii) one or more singly unsaturated comonomers; (iii) from 5-40 wt. percent, based on the total weight of all polymerizable monomers in said composition, of a fluorinated-alkyl-group-containing leveling agent having the formula ##STR4## wherein R 1 represents H or CH 3 ; and R 2 represents C a H b F c , wherein a is an integer of from 2-20, b is an integer of from 0-4, and c=2a+1-b; and (iv) optionally, customary additives; and (b) curing said coating composition by polymerization.
Claim 2
Dependent Claim
130 words
A scratch-resistant, weather-resistant, polymerized coating having desirable optical properties, prepared by the process comprising: (a) applying to a substrate a polymerizable flowable coating composition, said composition comprising as components (i) one or more multi-functional (meth)acrylate monomers, said multi-functional monomers containing two or more polymerizable carbon-carbon double bonds; (ii) one or more singly unsaturated comonomers; (iii) from 5-40 wt. percent, based on the total weight of all polymerizable monomers in said composition, of a fluorinated-alkyl-group-containing leveling agent having the formula ##STR4## wherein R 1 represents H or CH 3 ; and R 2 represents C a H b F c , wherein a is an integer of from 2-20, b is an integer of from 0-4, and c=2a+1-b; and (iv) optionally, customary additives; and (b) curing said coating composition by polymerization.
Claim 3
Dependent Claim
73 words
The coating of claim 1, wherein said component (i) comprises a multifunctional (meth)acrylate monomer or oligomer having three or more polymerizable double bonds in an amount such that the weight percent of said (meth) acrylate monomer or oligomer having three or more double bonds comprises 30 wt. % or more of all polymerizable monomers; and from 5-20 wt. % of said fluorinated-alkyl-group-containing (meth)acrylate monomer I based on the total of all polymerizable monomers.
Claim 4
Dependent Claim
25 words
The coating of claim 1, wherein component (i) contains a difunctional monomer, and wherein at least 70 wt % of said component (i) comprises acrylates.
Claim 5
Dependent Claim
25 words
The coating of claim 2, wherein component (i) contains a difunctional monomer, and wherein at least 70 wt % of said component (i) comprises acrylates.
Claim 6
Dependent Claim
13 words
The coating of claim 1, wherein said component (iv) comprises a UV-protective agent.
Claim 7
Dependent Claim
13 words
The coating of claim 2, wherein said component (iv) comprises a UV-protective agent.
Claim 8
Dependent Claim
13 words
The coating of claim 3, wherein said component (iv) comprises a UV-protective agent.
Claim 9
Dependent Claim
13 words
The coating of claim 4, wherein said component (iv) comprises a UV-protective agent.
Claim 10
Dependent Claim
15 words
The coating of claim 5, wherein said UV protective agent contains a polymerizable double bond.
Claim 11
Dependent Claim
15 words
The coating of claim 6, wherein said UV protective agent contains a polymerizable double bond.
Claim 12
Dependent Claim
15 words
The coating of claim 7, wherein said UV protective agent contains a polymerizable double bond.
Claim 13
Dependent Claim
15 words
The coating of claim 8, wherein said UV protective agent contains a polymerizable double bond.
Claim 14
Dependent Claim
113 words
A non-aqueous, solvent free, polymerizable coating composition suitable for the preparation of scratch-resistant, weather-resistant coatings having desirable optical properties, comprising: (i) one or more multi-functional (meth)acrylate monomers, said multi-functional monomers containing two or more polymerizable carbon-carbon double bonds; (ii) one or more singly unsaturated comonomers; (iii) from 5-40 wt. percent, based on the total weight of all polymerizable monomers in said composition, of a fluorinated-alkyl-group-containing leveling agent having the formula ##STR5## wherein R 1 represents H or CH 3 ;and R 2 represents C a H b F c , wherein a is an integer of from 2-20, b is an integer of from 0-4, and c =2a+1-b; and (iv) optionally, customary additives.
Claim 15
Dependent Claim
113 words
A non-aqueous, solvent free, polymerizable coating composition suitable for the preparation of scratch-resistant, weather-resistant coatings having desirable optical properties, comprising: (i) one or more multi-functional (meth)acrylate monomers, said multi-functional monomers containing two or more polymerizable carbon-carbon double bonds; (ii) one or more singly unsaturated comonomers; (iii) from 5-40 wt. percent, based on the total weight of all polymerizable monomers in said composition, of a fluorinated-alkyl-group-containing leveling agent having the formula ##STR5## wherein R 1 represents H or CH 3 ;and R 2 represents C a H b F c , wherein a is an integer of from 2-20, b is an integer of from 0-4, and c =2a+1-b; and (iv) optionally, customary additives.
Claim 16
Dependent Claim
74 words
The polymerizable coating composition of claim 13, wherein said component (i) comprises a multifunctional (meth)acrylate monomer or oligomer having three or more polymerizable double bonds in an amount such that the weight percent of said (meth)acrylate monomer or oligomer having three or more double bonds comprises 30 wt. % or more of all polymerizable monomers; and from 5-20 wt. % of said fluorinated-alkyl-group-containing (meth)acrylate monomer I based on the total of all polymerizable monomers.
Claim 17
Dependent Claim
27 words
The polymerizable coating composition of claim 13, wherein component (i) contains a difunctional monomer, and wherein at least 70 wt % of said component (i) comprises acrylates.
Claim 18
Dependent Claim
15 words
The polymerizble coating composition of claim 1, wherein said component (iv) comprises a UV-protective agent.
Claim 19
Dependent Claim
15 words
The polymerizable coating composition of claim 1, wherein said component (iv) comprises a UV-protective agent.
Claim 20
Dependent Claim
19 words
The coating of claim 1, wherein said composition comprises less than 30 wt. % of said singly unsaturated comonomers.
Claim 21
Dependent Claim
18 words
The coating of claim 1, wherein methacrylic monomers are ≧30 wt. % of (meth)acrylic monomers in said composition.
Claim 22
Dependent Claim
21 words
The polymerizable coating composition of claim 13, wherein said composition comprises less than 30 wt. % of said singly unsaturated comonomers.
Claim 23
Dependent Claim
20 words
The polymerizable coating composition of claim 13, wherein methacrylic monomers are ≧30 wt. % of (meth)acrylic monomers in said composition.
References Cited (Backward Citations)
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