1. A weldable composition comprising:
a) a binder comprising the reaction product of one or more epoxy-containing materials and one or more phosphorous-containing materials;
b) a conductive pigment; and
c) a particulate material consisting essentially of elemental silicon.
2. The weldable composition of claim 1, wherein the epoxy-containing material is a polyglycidyl ether of a polyhydric phenol.
3. The weldable composition of claim 2, wherein the polyhydric phenol is Bisphenol A.
4. The weldable composition of claim 1, wherein the number average molecular weight of the epoxy-containing material is 220 to 25,000, as determined by multiplying the epoxy equivalent by the epoxy functionality.
5. The weldable composition of claim 4, wherein the molecular weight of the epoxy-containing material is 220 to 4500.
6. The weldable composition of claim 1, wherein the phosphorus-containing material is selected from the group consisting of phosphoric acid, a phosphonic acid, and phosphorous acid.
7. The weldable composition of claim 1, wherein the equivalent ratio of the phosphorus-containing material to epoxy-containing material is from 0.5 to 3.5:1.
8. The weldable composition of claim 1, further comprising a curing agent selected from the group consisting of aminoplast resins, polyisocyanates, polyacids, organometallic complexed materials, polyamines, and polyamides.
9. The weldable composition of claim 8, wherein the curing agent is an aminoplast.
10. The weldable composition of claim 9, wherein the aminoplast is a melamine-formaldehyde condensate.
11. The weldable composition of claim 10, wherein the melamine-formaldehyde condensate comprises at least 40 weight percent of imino groups.
12. The composition of claim 9, wherein the conductive pigment is iron phosphide.
13. The weldable composition of claim 1, wherein the conductive pigment is selected from the group consisting of zinc, aluminum, graphite, iron phosphide, tungsten, carbon black, and mixtures thereof.
14. The weldable composition of claim 13, wherein the conductive pigment is zinc andor iron phosphide.
15. The weldable composition of claim 1, wherein the weight percent of (a) is from 20 to 90, based on the total weight of the composition.
16. The weldable composition of claim 1, wherein the weight percent of (b) is from 2 to 30, based on the total weight of the composition.
17. The weldable composition of claim 1, wherein the weight percent of (c) is from 0.5 to 30, based on the total weight of the composition.
18. The weldable composition of claim 1, wherein the weight ratio of (b) to (a) is from 0.2to 10.
19. The weldable composition of claim 1, wherein the weight ratio of (c) to (b) is from 0.02 to 2.0.
20. The weldable composition of claim 1 further comprising one or more corrosion resistant pigments.
21. The weldable composition of claim 1, wherein said composition is aqueous-based.
22. The weldable composition of claim 1, wherein said composition is solvent-based.
23. A process for coating a metal substrate comprising:
a) applying the composition of claim 1 to the metal substrate, wherein the composition is at a temperature of 20\xb0 C. to 150\xb0 C.;
b) curing the coating composition on the metal substrate.
24. The process of claim 23, wherein the metal substrate comprises a ferrous metal, a non-ferrous metal, or a combination thereof.
25. The process of claim 23, wherein the metal substrate is galvanized before application of the composition.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. In a patient’s mouth including a buccal cavity, a pharyngeal cavity, an epiglottis, a vallecular, and a tongue, a superglottic and peri-laryngeal apparatus for insertion of a supraglottic airway by a medical practitioner into said patient’s upper airway, said apparatus comprising:
a handle member;
an arcuate offset member disposed medially of said handle member and a compressor-lever shield member;
said compressor-lever shield member configured to continuously widen from said arcuate offset member to a substantially broad tip means disposed at said shield member’s leading, distal edge, and adapted to match size and configuration of the anatomical features of said patient’s upper airway; and
said arcuate offset member configured to enable said shield member to reach said supraglottic region proximal to the base of said tongue and said vallecular so as to provide sufficient leverage to enable said medical practitioner to compress and lift said tongue and to simultaneously lift said epiglottis in said pharyngeal cavity, while simultaneously flattening said tongue in said buccal cavity, for creating sufficient space in both said buccal cavity and said pharyngeal cavity to enable said medical practitioner to rapidly insert said supraglottic airway while minimizing tissue trauma and post-procedural patient discomfort.
2. The apparatus recited in claim 1, wherein said handle member, said arcuate offset member, and said compressor-lever shield member are integrally constructed.
3. The apparatus recited in claim 1, wherein said handle member and said arcuate offset member are releasably interconnected by a first connection means.
4. The apparatus recited in claim 3, wherein said first connection means comprises a threaded engagement between said handle member and said arcuate offset member.
5. The apparatus recited in claim 3, wherein said first connection means comprises a slotted engagement between said handle member and said arcuate offset member.
6. The apparatus recited in claim 1, wherein said arcuate offset member and said compression-lever shield member are interconnected by a second connection means.
7. The apparatus recited in claim 6, wherein said second connection means comprises a slotted channel engagement between said arcuate offset member and said compression-lever shield member.
8. The apparatus recited in claim 1, wherein said compression-lever shield member comprises a substantially flat configuration.
9. The apparatus recited in claim 1, wherein said compression-lever shield member comprises a substantially concave configuration.
10. The apparatus recited in claim 1, wherein said compression-lever shield member comprises a perimeter buffered edge to prevent tissue trauma as said shield member is advanced by said medical practitioner through said patient’s pharyngeal cavity into said vallecular.
11. The apparatus recited in claim 1, wherein said arcuate offset member includes a marker means disposed at its end proximal to said handle member, for guiding said medical practitioner when said shield member has been fully inserted into said patient’s upper airway.