Described herein is a latex coating composition comprising particles of of the polymer are of formula I, wherein R.sup.3 is H or CH.sub.3, L is an alkylene group comprising 1-4 carbon atoms, R.sup.1 and R.sup.2 are independently selected from an alkyl group comprising 1 to 3 carbon atoms, n is an integer from 11 to 21, and A is a counter anion.

##STR00001##

Described herein is a latex coating composition comprising particles of of the polymer are of formula I, wherein R.sup.3 is H or CH.sub.3, L is an alkylene group comprising 1-4 carbon atoms, R.sup.1 and R.sup.2 are independently selected from an alkyl group comprising 1 to 3 carbon atoms, n is an integer from 11 to 21, and A is a counter anion.

##STR00001##

A diffusion film is provided, including a matrix material including a reaction product of following components: a polythiol, a polyolefin, and a crosslinking agent having thiol and alkenyl functional groups; a photoluminescence material including at least a quantum dot or at least a fluorescent powder; and light diffusion particles including organic polymer particles and/or inorganic particles.

A diffusion film is provided, including a matrix material including a reaction product of following components: a polythiol, a polyolefin, and a crosslinking agent having thiol and alkenyl functional groups; a photoluminescence material including at least a quantum dot or at least a fluorescent powder; and light diffusion particles including organic polymer particles and/or inorganic particles.

A preparation method of an ionic liquid shale inhibitor for drilling fluid comprises the following step: subjecting the imidazole-based ionic liquid to a polymerization reaction in water environment under an inert atmosphere, and the produced polymer is used as an ionic liquid shale inhibitor for drilling fluid. The ionic liquid shale inhibitor for drilling fluid has the advantages of desirable inhibition effect, good compatibility, strong high-temperature resistance, simple preparation method and low cost.

A preparation method of an ionic liquid shale inhibitor for drilling fluid comprises the following step: subjecting the imidazole-based ionic liquid to a polymerization reaction in water environment under an inert atmosphere, and the produced polymer is used as an ionic liquid shale inhibitor for drilling fluid. The ionic liquid shale inhibitor for drilling fluid has the advantages of desirable inhibition effect, good compatibility, strong high-temperature resistance, simple preparation method and low cost.

Provided is an additive for a chemical agent, which is capable of improving the functions of various chemical agents. The additive for a chemical agent according to an embodiment of the present invention includes a polymer (I) containing 50 mol % to 100 mol % of a structural unit derived from an N-vinyl lactam-based monomer with respect to 100 mol % of structural units derived from all monomers, the additive for a chemical agent having an average particle diameter of 100 μm or less in a state of having been dried under a reduced pressure of 0.02 MPa or less at 100° C. for 1 hour.

Provided is an additive for a chemical agent, which is capable of improving the functions of various chemical agents. The additive for a chemical agent according to an embodiment of the present invention includes a polymer (I) containing 50 mol % to 100 mol % of a structural unit derived from an N-vinyl lactam-based monomer with respect to 100 mol % of structural units derived from all monomers, the additive for a chemical agent having an average particle diameter of 100 μm or less in a state of having been dried under a reduced pressure of 0.02 MPa or less at 100° C. for 1 hour.

This disclosure relates to methods for obtaining immobilized enzyme preparations, in particular to a preparation and application of a novel active conjugate of an enzyme with a polymer carrier. Said conjugate possesses the properties of the known Longidaza® drug and inhibits hyperplasia of connective tissue, and presents anti-inflammatory action, and can be used for manufacturing stable, active and safe in use long-acting drugs in the form of a suppository, ointment, injection, cosmetic cream, and for making veterinary drugs. These methods include conjugation of hyaluronidase with a water-soluble copolymer using the carbodiimide or azide conjugation method. The conjugation is carried out with the use of a copolymer N-oxide 1,4-ethylene piperazine, (N carboxymethyl)-1,4-ethylene piperazine or its hydrazide, and 1,4-ethylene piperazine of general formula: ##STR00001## where n is from 40% to 90% of the total number of units; m is from 3% to 40% of the total number of units; and n+m+1=100%.

This disclosure relates to methods for obtaining immobilized enzyme preparations, in particular to a preparation and application of a novel active conjugate of an enzyme with a polymer carrier. Said conjugate possesses the properties of the known Longidaza® drug and inhibits hyperplasia of connective tissue, and presents anti-inflammatory action, and can be used for manufacturing stable, active and safe in use long-acting drugs in the form of a suppository, ointment, injection, cosmetic cream, and for making veterinary drugs. These methods include conjugation of hyaluronidase with a water-soluble copolymer using the carbodiimide or azide conjugation method. The conjugation is carried out with the use of a copolymer N-oxide 1,4-ethylene piperazine, (N carboxymethyl)-1,4-ethylene piperazine or its hydrazide, and 1,4-ethylene piperazine of general formula: ##STR00001## where n is from 40% to 90% of the total number of units; m is from 3% to 40% of the total number of units; and n+m+1=100%.