A methacrylic resin having a cyclic structure in a main chain thereof, a shaped article, and an optical component or automotive part, in which the glass transition temperature is higher than 120 C. and 160 C. or lower, and the sign of the orientational birefringence when being oriented so as to have a degree of orientation of 0.03 is different from the sign of the orientational birefringence when being oriented so as to have a degree of orientation of 0.08.

The present disclosure relates to lubricant additives such as dispersants and dispersant viscosity modifiers including acyl peptide grafted polymers and lubricating oil compositions comprising such additives. The disclosure also relates to the use of lubricant compositions comprising the additives herein for improving the soot or sludge handling characteristics of an engine lubricant composition and while minimizing the deterioration of engine's elastomer compatibility.

The present disclosure relates to lubricant additives such as dispersants and dispersant viscosity modifiers including acyl peptide grafted polymers and lubricating oil compositions comprising such additives. The disclosure also relates to the use of lubricant compositions comprising the additives herein for improving the soot or sludge handling characteristics of an engine lubricant composition and while minimizing the deterioration of engine's elastomer compatibility.

The present disclosure relates to radiopaque PVA polymers where the PVA has a first pendant group and a second pendant group, wherein the first pendant group comprises a first phenyl group bearing 1 to 5 iodine atoms, and the second pendant group comprises either (a) a second phenyl group bearing 1 to 3 substituents selected from the group W and optionally 1 to 4 iodine substituents, the group(s) W and the optional iodines being the sole substituents of the second phenyl group. Each W is selected from OH, COOH, SO.sub.3H, OPO.sub.3H.sub.2, O(C.sub.1-4alkyl), O(C.sub.1-4alkyl)OH, O(C.sub.1-4alkyl)R.sup.2, O(C.sub.2H.sub.5O).sub.qR.sup.1(CO)OC.sub.1-4alkyl and O(CO)C.sub.1-4alkyl; wherein R.sup.1 is H or C.sub.1-4 alkyl; R.sup.2 is COOH, SO.sub.3H, or OPO.sub.3H.sub.2; q is an integer from 1 to 4; wherein the group W may be in the form of a pharmaceutically acceptable salt; or (b) a pyridyl group; which is optionally in the form of a pyridinium ion.

The present disclosure relates to radiopaque PVA polymers where the PVA has a first pendant group and a second pendant group, wherein the first pendant group comprises a first phenyl group bearing 1 to 5 iodine atoms, and the second pendant group comprises either (a) a second phenyl group bearing 1 to 3 substituents selected from the group W and optionally 1 to 4 iodine substituents, the group(s) W and the optional iodines being the sole substituents of the second phenyl group. Each W is selected from OH, COOH, SO.sub.3H, OPO.sub.3H.sub.2, O(C.sub.1-4alkyl), O(C.sub.1-4alkyl)OH, O(C.sub.1-4alkyl)R.sup.2, O(C.sub.2H.sub.5O).sub.qR.sup.1(CO)OC.sub.1-4alkyl and O(CO)C.sub.1-4alkyl; wherein R.sup.1 is H or C.sub.1-4 alkyl; R.sup.2 is COOH, SO.sub.3H, or OPO.sub.3H.sub.2; q is an integer from 1 to 4; wherein the group W may be in the form of a pharmaceutically acceptable salt; or (b) a pyridyl group; which is optionally in the form of a pyridinium ion.

A polymer compound to be used as a binder for a negative electrode of a power storage device is provided. The polymer compound is formed by condensation of a polyacrylic acid and a polyfunctional amine represented by the following general formula (1), where X is a ring structure having 1 to 3 benzene rings; and C.sup.1 to C.sup.4 are each a carbon atom constituting a benzene ring in the ring structure. ##STR00001##

A polymer compound to be used as a binder for a negative electrode of a power storage device is provided. The polymer compound is formed by condensation of a polyacrylic acid and a polyfunctional amine represented by the following general formula (1), where X is a ring structure having 1 to 3 benzene rings; and C.sup.1 to C.sup.4 are each a carbon atom constituting a benzene ring in the ring structure. ##STR00001##

A polymer compound to be used as a binder for a negative electrode of a power storage device is provided. The polymer compound is formed by condensation of a polyacrylic acid and a polyfunctional amine represented by the following general formula (1), where X is a ring structure having 1 to 3 benzene rings; and C.sup.1 to C.sup.4 are each a carbon atom constituting a benzene ring in the ring structure. ##STR00001##

The present disclosure relates to oxazoline modified lubricant additives that have dispersant properties and lubricating oil compositions comprising said dispersant lubricant additives. The disclosure also relates to the use of lubricant compositions comprising the additives of the disclosure for improving the soot or sludge handling characteristics of an engine lubricant composition, while minimizing the deterioration of engine seals.

The present disclosure relates to oxazoline modified lubricant additives that have dispersant properties and lubricating oil compositions comprising said dispersant lubricant additives. The disclosure also relates to the use of lubricant compositions comprising the additives of the disclosure for improving the soot or sludge handling characteristics of an engine lubricant composition, while minimizing the deterioration of engine seals.