Cyanoacrylate compositions that include a cyanoacrylate component, a rubber toughening component, a component containing at least two (meth)acrylate functional groups and an anhydride component are provided.

Two-part cyanoacrylate/cationically curable adhesive systems are provided.

Two-part cyanoacrylate/cationically curable adhesive systems are provided.

Two-part cyanoacrylate/cationically curable adhesive systems are provided.

A process for the preparation of targeting nanoparticles of a poly(alkyl cyanoacrylate) homopolymer or copolymer, wherein said method comprises, in a single step, the anionic polymerisation of an oil-in-water miniemulsion as herein defined. The invention also relates to nanoparticles produced from said process and to their use in medicine.

Cyanoacrylate compositions that include, in addition to an allyl-2-cyanoacrylate, a rubber toughening component and a component functionalized with at least two blocked hydroxyl groups are provided.

This invention relates to photocurable electron deficient olefin-containing compositions, such as those containing certain 2-cyanoacrylates, 2-cyanopentadienoates, methylidene malonates, and vinylidine cyanide, and photolatent bases. When exposed to radiation in the electromagnetic spectrum, the compositions show a delay cure property.

An active energy ray-curable composition is disclosed including: an anionically polymerizable compound represented by (1):

##STR00001##

wherein EWG represents an electron-withdrawing group, X represents a single bond or an oxygen atom (O), R represents an n-valent organic group, and n represents an integer of 1 to 6; when n is an integer of 2 to 6, the respective EWG and the respective X may be the same or different; and when n is 1, EWG and R may be bonded; and a compound (photobase generator) represented by (2):

##STR00002##

wherein ring A represents an aromatic ring that may be substituted or a heteroaromatic ring that may be substituted; R.sup.1 and R.sup.2 are the same or different and each represents a hydrogen atom or an alkyl group; R.sup.1 and R.sup.2 may be bonded to each other to form a ring together with an adjacent nitrogen atom; and the ring may be substituted.

An active energy ray-curable composition is disclosed including: an anionically polymerizable compound represented by (1):

##STR00001##

wherein EWG represents an electron-withdrawing group, X represents a single bond or an oxygen atom (O), R represents an n-valent organic group, and n represents an integer of 1 to 6; when n is an integer of 2 to 6, the respective EWG and the respective X may be the same or different; and when n is 1, EWG and R may be bonded; and a compound (photobase generator) represented by (2):

##STR00002##

wherein ring A represents an aromatic ring that may be substituted or a heteroaromatic ring that may be substituted; R.sup.1 and R.sup.2 are the same or different and each represents a hydrogen atom or an alkyl group; R.sup.1 and R.sup.2 may be bonded to each other to form a ring together with an adjacent nitrogen atom; and the ring may be substituted.

Cyanoacrylic adhesive compositions of the type comprising at least one cyanoacrylic acid ester or one malonic acid ester having an allyl, acrylic or methacrylic group, wherein there is also present at least one radical initiator of the polymerization reaction of the allyl, acrylic or methacrylic ester of cyanoacrylic acid or malonic acid and at least one radical inhibitor of said polymerization reaction. In comparison with known cyanoacrylic adhesive compositions, those according to the invention offer the advantage of maintaining their bonding capability even at high temperatures, in particular up to 150 C.