An acrylic rubber including: a polymer composition of: 70 to 99.9% by weight of a bonding unit derived from at least one (meth) acrylic acid ester selected from (meth) acrylic acid alkyl ester and (meth) acrylic acid alkoxyalkyl ester; 0.1 to 10% by weight of a bonding unit derived from a monomer containing a reactive group; and 0 to 20% by weight of a bonding unit derived from other monomer, wherein ash content is 0.15% by weight or less, total amount of sodium and sulfur in the ash is 60% by weight or more, a ratio of sodium to sulfur by weight ratio is in the range of 0.5 to 2.5, ratio of Z-average molecular weight to weight average molecular weight is 1.3 or more, and weight average molecular weight is in the range of 1,000,000 to 5,000,000.

The present disclosure provides a method of making an article, including: providing a composition comprising two or more types of polymerizable monomers and two or more types of polymerization initiators; exposing the build region to one or more polymerization stimuli; polymerizing the two or more polymerizable monomers at the build region to provide a polymer layer; and advancing the polymer layer away from the build region to provide a three-dimensional article containing two or more integrally mixed polymers.

Polymerizable compositions comprising a radically polymerizable resin can be polymerized in the absence of a peroxide initiator and other undesirable components. The polymerizable compositions and methods employ a manganese- or iron-containing salt or organic complex and a 1,3-dioxo compound with one or more other components. The polymerizable compositions have better storage stability and reduced gel time-drift.

The present invention belongs to the technical field of marine anti-fouling materials, and discloses a self-polishing zwitterionic anti-fouling resin having a main chain degradability and the preparation therefor and the use thereof. The self-polishing zwitterionic anti-fouling resin is formed by copolymerizing the following three monomers (in the total mass of the monomers): 1% to 80% of an olefinic reactive monomer, 1% to 80% of a cycloketene acetal monomer, and 1% to 80% of a betaine type precursor. The anti-fouling resin has a main chain degradability and a side chain hydrolyzability, and the transition of a coating from being hydrophobic to being hydrophilic is achieved by the hydrolysis of a surface to produce a super-hydrophilic zwitterionic surface, in order to further enhance the anti-fouling ability of the system. The material not only overcomes the disadvantages of poor mechanical properties and poor solubility in an organic solvent of a zwitterionic material, but can also effectively control the long-term stable release of an anti-fouling agent, so as to achieve a synergistic anti-fouling effect of the anti-fouling agent and an anti-protein. The method of the present invention is simple, has a relatively low cost, and is suitable for industrial production. The material is used in the field of marine anti-fouling coatings.

An adhesive sheet utilizes an acrylic resin composition without using a separate primer layer, thus providing excellent adhesion, high reliability due to its excellent light resistance under the sunlight exposure, and excellent elastic modulus, and can be easily used as an adhesive material in various fields such as building materials and automobiles.

An adhesive sheet utilizes an acrylic resin composition without using a separate primer layer, thus providing excellent adhesion, high reliability due to its excellent light resistance under the sunlight exposure, and excellent elastic modulus, and can be easily used as an adhesive material in various fields such as building materials and automobiles.

It is an object of the present invention to form a resist film that is highly sensitive and enables high-resolution patterning. The present invention relates to a resist material that comprises a polymer comprising a unit derived from a structure represented by the following formula (101). In the formula (101), R.sup.1 each independently represents a hydrogen atom, an alkyl group optionally having a substituent, an acyl group optionally having a substituent, an allyl group optionally having a substituent, an alkoxy group optionally having a substituent, or an alkylsilyl group optionally having a substituent, and a plurality of R.sup.1 may be the same or different. R.sup.11 represents a hydrogen atom or an alkyl group optionally having a substituent. R.sup.2 represents a hydrogen atom, an alkyl group, a fluorine atom, a chlorine atom, a bromine atom, or a halogenated alkyl group; and Y.sup.1 represents a single bond or a linking group.

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Provided is a resin that exhibits high resist performance because a poorly soluble component with respect to a resist solvent is reduced, and a production method for the resin. Disclosed is a photoresist resin containing an acrylic resin, in which when the photoresist resin is dissolved in propylene glycol monomethyl ether acetate in such a way that a resin solid content concentration is 5 wt %, a polystyrene equivalent turbidity measured using a method described in “Drinking Water Testing Methods” of Japan Water Works Association of 2003, Ministry of Health, Labor and Welfare Ordinance No. 261 of Japan is 30 or less.

An object is to provide a viscosity index improver composition that is capable of properly regulating the HTHS viscosity in the effective temperature range of a lubricating oil composition to a lower range, and a lubricating oil composition containing the viscosity index improver composition, and the viscosity index improver composition contains a comb-shaped polymer (A) containing a structural unit derived from a macromonomer (α) and a structural unit derived from a particular monomer (A1), the macromonomer (α) having a (meth)acryloyl group at one end, and having a structural unit derived from a monomer (α1) selected from butadiene and hydrogenated butadiene.

The present invention is a powdered dispersant for hydraulic compositions containing a copolymer obtained by polymerizing raw material monomers containing a predetermined monomer 1 containing AO group with a number of added moles n falling within a predetermined range and a predetermined monomer 2 having a predetermined group such as a carboxylic acid group or the like, wherein a ratio of monomer 2 in the raw material monomers is 22 mass % or more, and a product of a value of n of monomer 1 and a value of mass % of the ratio is 420 or more and 2600 or less.