A photochromic curable composition comprising a radically polymerizable monomer having at least one oxetanyl group in one molecule, a photochromic compound and radically polymerizable monomers other than the above polymerizable monomer, and a photochromic cured body obtained by polymerizing the photochromic curable composition.

A photochromic curable composition comprising a radically polymerizable monomer having at least one oxetanyl group in one molecule, a photochromic compound and radically polymerizable monomers other than the above polymerizable monomer, and a photochromic cured body obtained by polymerizing the photochromic curable composition.

An anaerobically curable composition comprising: a liquid anaerobically curable component; a solid anaerobically curable component; a solid thermoplastic polyurethane resin having a molecular weight in the range of from 40,000 g/mol to 100,000 g/mol and a melting point in the range of from 40° C. to 80° C.; and a curing component for curing the anaerobically curable components.

Advantageously, the compositions of the invention are substantially solid and may be used as threadlockers.

An anaerobically curable composition comprising: a liquid anaerobically curable component; a solid anaerobically curable component; a solid thermoplastic polyurethane resin having a molecular weight in the range of from 40,000 g/mol to 100,000 g/mol and a melting point in the range of from 40° C. to 80° C.; and a curing component for curing the anaerobically curable components.

Advantageously, the compositions of the invention are substantially solid and may be used as threadlockers.

Binder compositions and methods for making and using same are provided. In at least one specific embodiment, the binder composition can include at least one unsaturated compound having two or more unsaturated carbon-carbon bonds and at least one free radical precursor. At least one of the unsaturated carbon-carbon bonds can be a pi-bond that is not conjugated with an aromatic moiety and can be capable of free radical addition. The free radical precursor can be present in an amount of about 7 wt % to about 99 wt %, based on the weight of the one or more unsaturated compounds.

Binder compositions and methods for making and using same are provided. In at least one specific embodiment, the binder composition can include at least one unsaturated compound having two or more unsaturated carbon-carbon bonds and at least one free radical precursor. At least one of the unsaturated carbon-carbon bonds can be a pi-bond that is not conjugated with an aromatic moiety and can be capable of free radical addition. The free radical precursor can be present in an amount of about 7 wt % to about 99 wt %, based on the weight of the one or more unsaturated compounds.

An optical fiber having a coating that includes a photoreactive marking compound is described. The photoreactive marking compound has two states that differ in the intensity and/or wavelength of fluorescence. Exposure of the photoreactive marking compound to electromagnetic radiation induces a transformation of the photoreactive marking compound from one state to the other state. The difference in fluorescence between the two states provides a detectable contrast that can be used to mark the optical fiber. A pattern of marks can be customized to different optical fibers to provide unambiguous identification of individual fibers. The coating may also include a pigment, where either or both of the pigment and photoreactive marking compound may function as a marker for identifying the optical fiber. The method extends generally to marking of films, coatings, and articles made of polymers or plastics.

An optical fiber having a coating that includes a photoreactive marking compound is described. The photoreactive marking compound has two states that differ in the intensity and/or wavelength of fluorescence. Exposure of the photoreactive marking compound to electromagnetic radiation induces a transformation of the photoreactive marking compound from one state to the other state. The difference in fluorescence between the two states provides a detectable contrast that can be used to mark the optical fiber. A pattern of marks can be customized to different optical fibers to provide unambiguous identification of individual fibers. The coating may also include a pigment, where either or both of the pigment and photoreactive marking compound may function as a marker for identifying the optical fiber. The method extends generally to marking of films, coatings, and articles made of polymers or plastics.

A glutarimide resin contains repeating units of formula (1), wherein R.sup.1 and R.sup.2 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms; repeating units of formula (2), wherein R.sup.3 and R.sup.4 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms, and repeating units of formula (3), wherein R.sup.5 and R.sup.6 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms, and R.sup.7 is an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, or a substituent containing an aromatic ring having 5 to 15 carbon atoms. The glutarimide resin satisfies the following inequality: 3≤M1+M2≤20. M1 is the content (mol %) of the repeating units of the formula (1) and M2 is the content (mol %) of the repeating units of the formula (2).

##STR00001##

A glutarimide resin contains repeating units represented by formula (1), formula (2), formula (3) and formula (4). R.sup.1 and R.sup.2 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms, and R.sup.3 and R.sup.4 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms. R.sup.5 and R.sup.6 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms, and R.sup.7 is an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, or a substituent containing an aromatic ring having 5 to 15 carbon atoms. R.sup.8 is hydrogen or an alkyl group having 1 to 8 carbon atoms, and R.sup.9 is an aryl group having 6 to 10 carbon atoms.

##STR00001##