Loctite (ireland) Limited

Loctite Corporation

Other

Stephen J Harris

John G Woods

John M Rooney

John Guthrie

Maureen G MacManus

Michael A McKervey

David P Melody

M Anthony McKervey

Dermot Diamond

Brendan J Kneafsey

John Rooney

Ciaran Mcardle

Gyula Svehla

Marueen G MacManus

Raymond G Leonard

Chromoionophores, optical sensors containing them and a method for

Polymerizable calixarene and oxacalixarene derivates wherein at least one aryl group of the macrocyclic ring has a phenolic side chain of the formula VII: ##STR1## wherein Z is a group containing an acrylate or methacrylate functional group. Linear polymers may be formed from these compounds by free radical polymerization at the (meth)acrylate group. Such compounds and their polymers are capable of sequestering metals.

Polymerizable calixarene and oxacalixarene derivatives, polymers thereof

Calixarene and oxacalixarene derivatives of the formula IV: ##STR1## wherein m'+m'=0-8

Calixarene and oxacalixarene derivatives and use thereof of

An ion-selective polymeric membrane for an electrochemical sensor for use in analytical chemistry, comprising

Ion-selective electrodes

The application describes nitrogen-containing an oxacalixarene or calixarene derivative of formula I: ##STR1## wherein m'+m'=0-8

Nitrogen-containing oxacalixarene and calixarene derivatives, polymers

An encapsulating composition for electronic devices comprises a curable material such as a silicone resin and an ion scavenger compound selected from certain calixarene or oxacalixarene compounds in which at least half of the phenolic groups have been substituted by specific groups and certain silacrown compounds. Exemplary ion scavenger compounds include ##STR1## the tetraethyl acetate of 7, 13, 19, 25-tetra-tertbutyl-27, 28, 29, 30-tetrahydroxy-2,3-dihomo-3-oxacalix-4-arene and 1,1-dimethasila-17-crown-6.

Encapsulating compositions

Oxacalixarenes of general formula I: ##STR1## wherein m=0-7 and n=1-8 with the proviso that m+n.ltoreq.8;

Functionalized oxacalixarenes, their preparation and use in instant

A free radical polymerization process comprises bringing together

Polymerization catalysts and polymerization process using such catalysts

An encapsulating composition for electronic devices comprises a curable material such as an epoxy resin and an ion scavenger compound selected from certain calixarene or oxycalixarene compounds in which at least half of the phenolic groups have been substituted by specific groups and certain silacrown compounds. Exemplary ion scavenger compounds include ##STR1## the tetraethyl acetate of 7, 13, 19, 25-tetra-tertbutyl-27, 28, 29, 30-tetrahydroxy-2,3-dihomo-3-oxacalix-4-arene and 1,1-dimethasila-17-crown-6.

Novel nitrogen-containing calixarene derivatives which are useful for sequestration of transition metals are represented by the formulae ##STR1## wherein m+n=4,6 or 8

Calixarene derivatives, and use of such compounds for sequestration of

Novel Calixarene derivatives useful as accelerators in cyanoacrylate adhesive compositions are represented by the formula ##STR1## wherein m+n=4,6 or 8

Calixarene derivatives and use as accelerators in adhesive compositions

Polyfunctional cationically polymerizable styryloxy compound of the formula ##STR1## where R.sup.1 and R.sup.2 are H, or one of R.sup.1 and R.sup.2 are H and the other is methyl; R.sup.3 and R.sup.4 are H, lower alkyl, or alkoxy if R.sup.2 is not methyl; R.sup.5 is a divalent hydrocarbon radical; G is any multivalent organic or inorganic radical free of amino, aliphatic hydroxyl, aliphatic thiol or other groups which interfere with cationic polymerization; and n is an integer of two or more.

Styryloxy resins and compositions thereof

Cyanoacrylate adhesive compositions which employ calixarene compounds as accelerators give substantially reduced fixture and cure times on de-activating substrates such as wood. The calixarene compounds are preferably employed at levels of about 0.1-1% by weight of the composition. The calixarene compounds particularly useful in this invention may be represented by the formula: ##STR1## where R.sup.1 is alkyl, alkoxy, substituted alkyl or substituted alkoxy; R.sup.2 is H or alkyl; and n=4, 6, or 8.

Bonding method utilizing cyanoacrylate adhesive having calixarene

A linear or cross-linked polymer selected from polythioethers, polyethers, styrenic polymers, polyacrylates, and polyorganosiloxanes having a plurality of calixarene groups bound thereon, the calixarene groups having the formula ##STR1## where the R.sup.1 groups are the same or different H or hydrocarbyl groups; the R.sup.2 groups are H, hydrocarbyl, --CH.sub.2 C(=O)OR.sup.3, --CH.sub.2 C(=O)R.sup.3, or --C(=O)NHR.sup.3, R.sup.3 is hydrocarbyl or substituted hydrocarbyl; n is an integer of 1-8, m is an integer of 0-7 and n+m is 4-8.

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Dublin, Ireland

Stephen J Harris