EP0188880A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Conformal coating systems
Assignee: Henkel Loctite Ireland Ltd
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Filing: 1985-12-06
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Granted: —
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Expires: 2005-12-06
Abstract
Abstract The invention relates to a conformal coating for printed circuit boards and electronic components comprising a multifunctional alkene, a multifunctional thiol, a multifunctional isocyanate and a polymerisation initiator of the photoinitiator type, the composition being substantially free of isocyanate condensation catalyst.
Inventors
- 👤 John Woods
- 👤 John M. Rooney
- 👤 Bernard J. Bolger
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 01:16
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3855; C08G18/3876; C08F; C08F299/00; C08F299/02; C08F299/022; C08G18/04; C08G75/00; C08G75/02; C08G75/04; C08G75/045; H; H05; H05K; H05K3/00; H05K3/22; H05K3/28; H05K3/285; H05K3/287; H05K2201/00; H05K2201/09; H05K2201/09818; H05K2201/09872
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
38 words
A coating composition, especially useful for conformal coating, comprising i) a multifunctional alkene ii) a multifunctional thiol iii) a multifunctional isocyanate and iv) a polymerisation initiator of the photoinitiator type, the composition substantially free of isocyanate condensation catalyst.
Claim 2
Dependent Claim
38 words
A coating composition, especially useful for conformal coating, comprising i) a multifunctional alkene ii) a multifunctional thiol iii) a multifunctional isocyanate and iv) a polymerisation initiator of the photoinitiator type, the composition substantially free of isocyanate condensation catalyst.
Claim 3
Dependent Claim
37 words
A coating composition according to Claim 1 which is a two part composition in which the first part comprises the multifunctional alkene, the multifunctional thiol and the polymerisation initiator and the second part comprises the multifunctional isocyanate.
Claim 4
Dependent Claim
28 words
A coating composition according to Claim 1 wherein alkene groups in the multifunctional alkene are selected from the classes 0-allyl, N-allyl, 0-vinyl, N-vinyl and p-vinyl phenol ether groups.
Claim 5
Dependent Claim
46 words
A coating composition according to Claim 1 wherein the weight ranges of the constituents of the composition are as follows (expressed as percentages of the total weight of the constituents (i)-(iv): (i) multifunctional alkene 5-80%, (ii) multifunctional thiol 5-80%, (iii) multifunctional isocyanate 10-90%, (iv) photoinitiator 0.05-10%.
Claim 6
Dependent Claim
21 words
A composition as in Claim 4 wherein the respective ranges of constituents are: i) 15-45% ii) 25-60% iii) 10-50% iv) 0.5-2.5%
Claim 7
Dependent Claim
19 words
A composition as in Claim 1 wherein the respective ranges are: i) 22-37% ii) 30-35% iii) 12-45% iv) 0.5-2.5%.
References Cited (Backward Citations)
No citation records indexed.
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