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US 5,693,172 AGranted
Methods and compositions for interfacially bonding mineral surfaces and the like
OwnerMartel Zeldin, Wilmer K. Fifeinventors
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Abstract
Described are preferred methods for promoting interfacial bonding between surfaces containing oxide, hydrous oxide or hydroxyl groups. The methods involve attaching silane coupling agents to the opposed surfaces and, in turn, bonding the opposed silane coupling agents to each other to thereby promote interfacial bonding between the surfaces. Also described are preferred compositions for promoting such interfacial bonding.
Claims13
A method of interfacially bonding oxide-, hydroxide- or hydrous-oxide-containing surfaces, comprising:
- reacting between said surfaces a pyridylsilane coupling agent of the formula
- F.sub.(4-n) SiR.sub.n
- wherein
- n=and integer from 1 to 3;
- R is an organic group;
- F is a readily hydrolyzable group selected from a halogen, a group of the formula --O--R' wherein R' is an organic group having from 1 to about 8 carbon atoms, and a group of the formula --NR".sub.2, wherein R" is --H or an organic group having from 1 to about 8 carbon atoms;
- with the proviso that at least one organic group R contains a pyridine group having a ring nitrogen susceptible to alkylation;
- and a difunctional alkylating agent which is an aliphatic or arylalkyl compound having two or more halogen or activated ester groups effective for alkylating said ring nitrogen;
- so as to cause said surfaces to be interfacially bonded.
6 more elements
A composition for interfacially bonding surfaces containing oxide, hydrous oxide or hydroxide groups, comprising:
- a pyridylsilane coupling agent of the formula
- F.sub.(4-n) SiR.sub.n
- wherein
- n=and integer from 1 to 3;
- R is an organic group;
- F is a readily hydrolyzable group selected from a halogen, a group of the formula --O--R' wherein R' is an organic group having from 1 to about 8 carbon atoms, and a group of the formula --NR".sub.2, wherein R" is --H or an organic group having from 1 to about 8 carbon atoms;
- with the proviso that at least one organic group R contains a pyridine group having a ring nitrogen susceptible to alkylation;
- and a difunctional alkylating agent which is an aliphatic or arylalkyl compound having two or more halogen or activated ester groups effective for alkylating said ring nitrogen;
- in effective amounts to interfacially bond said surfaces.
6 more elements
Dependencies are inferred from the claim text.