A polymer including a structural unit (A) represented by the following formula (A) and a structural unit (B) represented by the following formula (B) or the following formula (C).

##STR00001##

(In the formula, Y is a group having a lithiated phenolic hydroxyl group.)

##STR00002##

(In the formula (B), X is an oxygen atom or a tertiary amino group represented by NR.sup.6, and R.sup.6 is an organic group having 1 to 20 carbon atoms.)

##STR00003##

(In the formula (C), Z is a covalent bond or a divalent group. R.sup.12 is a hydrogen atom or a monovalent substituent. R.sup.11, R.sup.13 and R.sup.14 are each a hydrogen atom or a monovalent organic group or R.sup.11 forms a ring together with R.sup.13 or R.sup.14.)

A polymer including a structural unit (A) represented by the following formula (A) and a structural unit (B) represented by the following formula (B) or the following formula (C).

##STR00001##

(In the formula, Y is a group having a lithiated phenolic hydroxyl group.)

##STR00002##

(In the formula (B), X is an oxygen atom or a tertiary amino group represented by NR.sup.6, and R.sup.6 is an organic group having 1 to 20 carbon atoms.)

##STR00003##

(In the formula (C), Z is a covalent bond or a divalent group. R.sup.12 is a hydrogen atom or a monovalent substituent. R.sup.11, R.sup.13 and R.sup.14 are each a hydrogen atom or a monovalent organic group or R.sup.11 forms a ring together with R.sup.13 or R.sup.14.)

The present invention provides amic acids and imides derived from a polymer comprising: (a) maleic anhydride, (b) a first C.sub.1-C.sub.7 alkyl vinyl ether monomer, and (c) a second C.sub.8-C.sub.30 alkyl vinyl ether monomer, wherein the polymer contains an amic acid or an imide group. The polymers containing an amic acid or an imide group of the invention may be employed in a wide variety of compositions, particularly in oral care compositions. Non-limiting generic structures of the amidic polymers are set out below: (I) wherein R.sub.1-R.sub.3, M, a, b, c, d, e, and f are defined herein.

##STR00001##

A liquid polymerizable composition including an anhydride derivative monomer with mineral nanoparticles homogeneously dispersed therein, as well as its use for the preparation of a transparent polymeric material having a high refractive index and its use in the optical field.

A liquid polymerizable composition including an anhydride derivative monomer with mineral nanoparticles homogeneously dispersed therein, as well as its use for the preparation of a transparent polymeric material having a high refractive index and its use in the optical field.

The subject matter described herein is directed to methods of preparing linear and brush polymers with functional backbones and the polymers prepared therefrom. The methods are termed RAFT step-growth polymerizations and can prepare unique polymers by using a step-growth mechanism to insert multiple functionalities into the polymer backbone. The methods include facile syntheses to obtain tunable polymers, including a two-step process to obtain tunable bottlebrush polymers.

The subject matter described herein is directed to methods of preparing linear and brush polymers with functional backbones and the polymers prepared therefrom. The methods are termed RAFT step-growth polymerizations and can prepare unique polymers by using a step-growth mechanism to insert multiple functionalities into the polymer backbone. The methods include facile syntheses to obtain tunable polymers, including a two-step process to obtain tunable bottlebrush polymers.

The present invention relates to a curable adhesive composition comprising (A) at least one maleimide compound, (B) at least one thiol compound having at least two mercapto groups and no siloxane group in the molecule; (C) at least one latent curing agent; and (D) optionally, at least one photo radical polymerization initiator. The cured product derived from the present adhesive composition features high moisture resistant property. Furthermore, the invention also provided an article comprising the cured adhesive composition, and the use thereof.

Provided is a curable composition having excellent workability and being capable of forming a cured product having super heat resistance by curing. The curable composition of the present disclosure includes a curable compound represented by Formula (1) below and a radical polymerization initiator. In the following formula, R.sup.1 and R.sup.2 each represent a curable functional group, and D.sup.1 and D.sup.2 each represent a single bond or a linking group. L represents a divalent group having a repeating unit containing a structure represented by Formula (I) below and a structure represented by Formula (II) below. Ar.sup.1 to Ar.sup.3 each represent an arylene group or a group in which two or more arylene groups are bonded via a single bond or a linking group. X represents CO, S, or SO.sub.2, and Y represents S, SO.sub.2, O, CO, COO, or CONH. n represents an integer of 0 or greater. ##STR00001##