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US 6,380,322 B1Granted
Reworkable high temperature adhesives
AssigneeGeorgia Tech Research Corporation
InventorsChing-Ping Wong, Jiali Wu
Life of this patent
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Abstract
A reworkable high temperature adhesive, comprising the reaction product of (a) a thermoplastic adhesive selected from the group consisting of polyetherimides, polyamide-imides, polysulfones, polyethersulfones, silicon-carbon thermosets, polyphenylene sulfides and mixtures thereof; (b) a metal acetonate; (c) an epoxy resin; (d) a crosslinker; (e) and a catalyst.
Claims46
A reworkable high temperature adhesive, comprising the reaction product:
- (a) an adhesive selected from the group consisting of polyetherimides, polyamide-imides, polysulfones, polyethersulfones, silicon-carbon thermosets, polyphenylene sulfides and mixtures thereof;
- (b) a metal acetonate;
- (c) an epoxy resin;
- and
- (d) a crosslinker
- wherein the reaction product is stable up to about 400° C. and is reworkable at temperatures of greater than about 400° C.
3 more elements
A reworkable high temperature adhesive comprising the reaction product of:
- (a) an adhesive comprising a polyamide-imide;
- (b) a metal acetonate of the formula [R1COCH═C(O−)R2]x Mx+;
- where Mx+ is selected from the group consisting of metals;
- X is the ligancy of [R1COCH═C(O−)R2] to Mx+ and is also the number of positive charge of M and is 1 to 6;
- and R1 and R2 selected independently from the group consisting of H, substituted or unsubstituted alkyl, alkyl substituted with phenyl, phenyl, substituted or unsubstituted phenyl substituted with alkyl, and acetyl;
- (c) an epoxy resin epoxy resin is selected from the group consisting of cycloaliphatic epoxys, bisphenol A, bisphenol F, novalac resins;
- and compounds of the general formula:
- where R is selected from the group consisting of:
- (d) a carboxylic acid anhydride;
- and
- (e) a catalyst selected from the group consisting of imidazolium salts and onium borate compounds wherein the reaction product is stable up to about 400° C. and is reworkable at temperatures of greater than about 400° C.
8 more elements
A reworkable high temperature adhesive obtained as a reaction product comprising:
- (a) an adhesive selected from the group consisting of polyetherimides, polyamide-imides, polysulfones, polyethersulfones, silicon-carbon thermosets, polyphenylene sulfides and mixtures thereof;
- (b) a metal acetylacetonate;
- (c) an epoxy resin;
- and
- (d) a crosslinker
- wherein the reaction product is stable up to about 400° C. and is reworkable at temperatures of greater than about 400° C.
3 more elements
Dependencies are inferred from the claim text.