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US 2026/0125585 A1Published application
Two-Component Rapid Cure Adhesive
OwnerIra Miller, Michael Czaplickiinventors
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Abstract
The present teachings provide for an adhesive formulation comprising a part A with an epoxy resin, and a part B with an acidic phosphorous constituent, wherein the adhesive has a T-Peel of at least about 2.5 N/mm as measured in accordance with ASTM D1876.
Claims33
1:
- A curable adhesive formulation comprising:
- a part A with one or more epoxy resins;
- a part B with an acidic phosphoric constituent;
- wherein the adhesive includes one or more of calcium carbonate, minerals, reinforcing fibers, hydrophobic silica, or any combination thereof;
- and
- wherein the cured adhesive provides for assemblies that have a lap shear of at least about 15 MPa as measured in accordance with EN 2243-1.
3 more elements
2:
- A curable adhesive formulation comprising:
- a part A with one or more epoxy resins;
- a part B with an acidic phosphoric constituent;
- wherein the cured adhesive has a T-Peel of at least about 2.5 N/mm as measured in accordance with ASTM D1876.
1 more element
3:
- The adhesive of claim 2, wherein the cured adhesive provides for assemblies that have a lap shear of at least about 15 MPa as measured in accordance with EN 2243-1.
4:
- The adhesive of claim 1, wherein the acidic phosphoric constituent comprises one or more phosphate esters, phosphoric acid, polyphosphoric acid, phosphorus pentoxide, or any combination thereof.
(canceled)
6:
- The adhesive of claim 4, wherein the one or more phosphate esters independently of one another are the reaction products of phosphoric acid and
- an alcohol;
- an epoxide group of a phosphate ester precursor (i.e., component not yet reacted with phosphoric acid);
- a mono-epoxide functional molecule;
- a glycidyl ether of cashew nutshell liquid (CNSL);
- a phenyl glycidyl ether;
- 2-ethylhexyl glycidyl ether;
- an epoxidized para-tertiary butyl phenol.
5 more elements
7-10. (canceled)
11:
- The adhesive of claim 1, wherein part B comprises one or more non-phosphorous containing acids or derivatives, one or more acid anhydride, one or more additives, one or more monomers, or any combination thereof.
(canceled)
13:
- The adhesive of claim 11, wherein the adhesive includes calcium carbonate.
14:
- The adhesive of claim 11, wherein the adhesive includes an elastomeric material.
(canceled)
16:
- The two-part system of claim 11, including calcium carbonate present in an amount of from about 1% to about 25% by weight of the part A.
(canceled)
18:
- The adhesive of claim 11, including hydrophobic silica.
19:
- The adhesive of claim 11, including tabular alumina.
20-21. (canceled)
22:
- The adhesive of claim 1, including one or more liquid epoxy resins that are, independently of one another, a reaction product of epichlorohydrin and a bisphenol.
23:
- The adhesive of claim 22, wherein the one or more liquid epoxy resins have
- an epoxide equivalent weight of from about 100 g/equivalent to about 1000 g/equivalent as measured according to ASTM D1652-97;
- an epoxide percentage of from about 20 to about 25;
- and/or
- a viscosity of from about 10 cP to about 100,000 cP at 25° C. as measured according to ASTM D445.
2 more elements
(canceled)
25:
- The adhesive of claim 2, wherein the one or more epoxy resins include one or more flexible epoxy resins independently of one another selected from di-functional glycidyl ether epoxy resin, modified BPA-based epoxy resins, multifunctional epoxidized polybutadiene resins, or any combination thereof.
26:
- The adhesive of claim 25, wherein the one or more flexible epoxy resins independently of one another have
- an epoxide equivalent weight of about 260 to about 500 as measured according to ASTM D1652-97;
- and/or
- a viscosity of about 700 cP to about 500,000 cP at 25° C. as measured according to ASTM D445.
1 more element
27-32. (canceled)
33:
- The adhesive of claim 2, wherein the one or more epoxy resins include epoxidized sorbitol.
34-41. (canceled)
42:
- The adhesive of claim 1, wherein the cured adhesive has a tensile modulus of at least 1000 MPa as measured in accordance with ISO 527.
43-44. (canceled)
45:
- The adhesive of claim 42, wherein part A and part B are substantially free of any fiber material.
(canceled)
47:
- The adhesive of claim 1, wherein part A includes an epoxidized linseed oil in an amount of greater than 0.5% but less than 10%.
48-50.
51:
- The adhesive of claim 1, wherein part A includes bisphenol A epoxy and an epoxidized linseed oil in a ratio of from about 1 part bisphenol A epoxy:2 parts epoxidized linseed oil to from about 2 parts bisphenol A epoxy:about 1 part epoxidized linseed oil.
52-59. (canceled)
Dependencies are inferred from the claim text.