VOC Exempt Brazing Binder System
AssigneeLucas-Milhaupt, Inc.
InventorMatthew M. Kasper
Life of this patent
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Abstract
By blending a brazing alloy, preferably a Cu, P, Sn, and Ni alloy, with a binder system (and in some cases other blended alloys), the invention includes several superior brazing binder systems. The brazing binder system is formed suitable for all the joint configurations commonly found in heat transfer equipment. The inventive binder system product includes an ultra low VOC coating, low VOC coating, and VOC exempt brazing binder system. The binder system may be sprayed on, brushed on, or applied using standard paste dispensing equipment.
Claims20
A method of forming a binder system comprising the steps of:
- A. providing a Volatile Organic Compound “VOC” exempt solvent in a range of 88.00% to 96.00% of total mass of the brazing paste;
- B. combining one of a 1) hydrogenated styrene ethylene ethylene propylene styrene/styrene ethylene propylene styrene block copolymer, 2) styrene ethylene butylene styrene, 3) styrene ethylene propylene styrene, and 4) styrene ethylene ethylene propylene styrene hydroxyl terminated polymers in a range of 3.00% to 8.00% of total mass of the brazing paste;
- C. adding a hydrocarbon resin in a range of 1.00% to 4.00% of total mass of the brazing binder system;
- and
- D. mixing the brazing binder system into a homogeneous mixture.
A brazing binder system comprising:
- 88.00% to 96.00% weight of a VOC-exempt solvent in a range of
- 3.00% to 8.00% weight of a hydrogenated styrene ethylene ethylene propylene styrene/styrene ethylene propylene styrene block copolymer;
- and a
- 1.00% to 4.00% weight of a hydrocarbon resin.
A brazing binder system comprising:
- A. a VOC-exempt solvent including parachlorobenzotrifluoride;
- B. a hydrogenated styrene ethylene ethylene propylene styrene/styrene ethylene propylene styrene block copolymer including block segments of styrene monomer units and hydrogenated conjugated diene monomer units;
- and
- C. a hydrocarbon resin including polymerized and hydrogenated pure monomer hydrocarbon feedstocks.
Dependencies are inferred from the claim text.