Organoborane polyamine complexes and adhesive compositions made therewith
AssigneeMinnesota Mining and Manufaturing Company
InventorsAlphonsus V. Pocius, Tadesse G. Nigatu
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Abstract
A complex comprises organoborane and polyamine. The polyamine is the reaction product of a diprimary amine-terminated material and a material having at least two groups reactive with primary amine. The complexes are useful in systems for initiating the polymerization of acrylic monomer, which systems further include a material reactive with amine. Polymerizable acrylic monomer compositions useful as adhesives can be prepared.
Claims24
A composite article comprising a first substrate, and a second substrate bonded to the first substrate by an acrylic adhesive, wherein the acrylic adhesive comprises the polymerization product of a polymerizable acrylic composition that comprised:
- a) at least one acrylic monomer;
- b) an effective amount of a complex comprising organoborane and and polyamine, wherein the polyamine comprised the reaction product of a diprimary amine-terminated material and a material having at least two groups reactive with primary amine, wherein a majority of the terminal groups in the polyamine were primary amine;
- and
- c) an effective amount of a compound that was reactive with amine for liberating the organoborane to initiate polymerization of the at least one acrylic monomer.
A method of bonding a low surface energy polymer to a substrate, the method comprising the steps of:
- a) providing a low surface energy polymer;
- b) providing a substrate;
- c) providing an adhesive composition comprising:
- i) at least one acrylic monomer;
- ii) an effective amount of a complex comprising organoborane and polyamine, wherein the polyamine comprises the reaction product of a diprimary amine-terminated material and a material having at least two groups reactive with primary amine, wherein a majority of the terminal groups in the polyamine are primary amine;
- and
- iii) an effective amount of a compound that is reactive with amine for liberating the organoborane to initiate polymerization of the at least one acrylic monomer;
- d) applying the adhesive composition to either the low surface energy polymer or the substrate;
- e) joining the low surface energy polymer and the substrate with the adhesive composition therebetween;
- and
- f) permitting the adhesive composition to cure to adhesively bond the low surface energy polymer and the substrate.
Dependencies are inferred from the claim text.