The present invention relates to the field of shape memory materials. Specifically, a shape memory polymer, a preparation method therefor, and use thereof are provided. The shape memory polymer is formed by polymerizing methyl ally polyethenoxy ether and 2-(dimethylamino)ethyl methacrylate. The synthesis steps of the shape memory polymer are simplified, the preparation method is simple, and the production cost is low. In addition, the shape memory polymer prepared in the present invention has excellent shape memory performance and high hydrophilicity and biocompatibility, and is suitable for preparing biomedical materials in the field of biomedical science.

Described herein is method of making a multifunctional compound by starting with a H(OR).sub.nP(O)(OR.sub.h.sup.1).sub.2 and performed a series of reactions to form a functionalized phosphorous compound such as CF.sub.2CFCFY.sup.2(OR).sub.nP(O)(OQ).sub.2(VIIA) CF.sub.2X.sup.3CFCF(OR).sub.nP(O)(OQ).sub.2(VIIB), or CF.sub.2X.sup.3CHFC(O)(OR).sub.nP(O)(OH).sub.2(VIB) Where: R is a C1-C4 alkenyl group; X.sup.3 is F or (OR).sub.nP(O)(OQ).sub.2; n is 0 or 1; Y.sup.2 is F, Cl, Br, H, or a fluoroalkyl group comprising 1 to 3 carbon atoms, wherein the fluoroalkyl group optionally comprises at least one of an ether linkage, Cl, Br, or I; and Q is an alkyl group having 1 to 6 carbon atoms and optionally comprising at least one catenated ether linkage, Si(CH.sub.3).sub.3, Si(CH.sub.2CH.sub.3).sub.3, H, a metallic cation, or a quaternary ammonium cation can be disposed on a metal surface. Such compounds may be used in generating ionomeric polymers and/or applied onto metal substrates.

Described herein is method of making a multifunctional compound by starting with a H(OR).sub.nP(O)(OR.sub.h.sup.1).sub.2 and performed a series of reactions to form a functionalized phosphorous compound such as CF.sub.2CFCFY.sup.2(OR).sub.nP(O)(OQ).sub.2(VIIA) CF.sub.2X.sup.3CFCF(OR).sub.nP(O)(OQ).sub.2(VIIB), or CF.sub.2X.sup.3CHFC(O)(OR).sub.nP(O)(OH).sub.2(VIB) Where: R is a C1-C4 alkenyl group; X.sup.3 is F or (OR).sub.nP(O)(OQ).sub.2; n is 0 or 1; Y.sup.2 is F, Cl, Br, H, or a fluoroalkyl group comprising 1 to 3 carbon atoms, wherein the fluoroalkyl group optionally comprises at least one of an ether linkage, Cl, Br, or I; and Q is an alkyl group having 1 to 6 carbon atoms and optionally comprising at least one catenated ether linkage, Si(CH.sub.3).sub.3, Si(CH.sub.2CH.sub.3).sub.3, H, a metallic cation, or a quaternary ammonium cation can be disposed on a metal surface. Such compounds may be used in generating ionomeric polymers and/or applied onto metal substrates.

[Problem] Provided is an oxyethylene chain-containing polymer having excellent biocompatibility and still having excellent reactivity.

[Solution] An oxyethylene chain-containing polymer according to the present invention is represented by the following general formula (1):

##STR00001##

(wherein, in the general formula (1), R.sup.1 is (CH.sub.2).sub.pSH, (CH.sub.2).sub.pN.sub.3, (CH.sub.2).sub.pNH.sub.2, or (CH.sub.2).sub.pCOOH, and p is an integer of 1 to 5; R.sup.2 to R.sup.4 are each independently hydrogen or a C.sub.1-10 alkyl group; R.sup.5 is a C.sub.1-10 alkyl group; R.sup.6 is hydrogen or a C.sub.1-5 alkyl group; R.sup.7 is a C.sub.1-10 alkyl group; n is an integer of 5 to 1000; m is an integer of 1 to 10; and q is an integer of 0 to 5).

[Problem] Provided is an oxyethylene chain-containing polymer having excellent biocompatibility and still having excellent reactivity.

[Solution] An oxyethylene chain-containing polymer according to the present invention is represented by the following general formula (1):

##STR00001##

(wherein, in the general formula (1), R.sup.1 is (CH.sub.2).sub.pSH, (CH.sub.2).sub.pN.sub.3, (CH.sub.2).sub.pNH.sub.2, or (CH.sub.2).sub.pCOOH, and p is an integer of 1 to 5; R.sup.2 to R.sup.4 are each independently hydrogen or a C.sub.1-10 alkyl group; R.sup.5 is a C.sub.1-10 alkyl group; R.sup.6 is hydrogen or a C.sub.1-5 alkyl group; R.sup.7 is a C.sub.1-10 alkyl group; n is an integer of 5 to 1000; m is an integer of 1 to 10; and q is an integer of 0 to 5).

Provided are a polymer viscosity reducer for a water-based drilling fluid and a preparation method thereof. The polymer viscosity reducer for the water-based drilling fluid is prepared from raw materials including, in parts by mass: 100 parts to 150 parts of water, 30 parts to 50 parts of acrylic acid, 10 parts to 20 parts of maleic anhydride, 40 parts to 60 parts of allyl polyethylene glycol, 3 parts to 6 parts of an initiator, 1 part to 3 parts of a pH regulator, 10 parts to 20 parts of a diamine, and 5 parts to 10 parts of a saturated organic acid.

Provided are a polymer viscosity reducer for a water-based drilling fluid and a preparation method thereof. The polymer viscosity reducer for the water-based drilling fluid is prepared from raw materials including, in parts by mass: 100 parts to 150 parts of water, 30 parts to 50 parts of acrylic acid, 10 parts to 20 parts of maleic anhydride, 40 parts to 60 parts of allyl polyethylene glycol, 3 parts to 6 parts of an initiator, 1 part to 3 parts of a pH regulator, 10 parts to 20 parts of a diamine, and 5 parts to 10 parts of a saturated organic acid.

The problem to be solved by the present disclosure is to provide an easily decomposable polymer and a method for decomposing such a polymer. The solution is a copolymer including an unsaturated hydrocarbon segment (A) and an enol ether segment (B), wherein the content of the enol ether segment (B) is 0.005 to 40 mass % of the content of the unsaturated hydrocarbon segment (A), and a method for decomposing the copolymer, including decomposing the copolymer in the presence of an acid.

The problem to be solved by the present disclosure is to provide an easily decomposable polymer and a method for decomposing such a polymer. The solution is a copolymer including an unsaturated hydrocarbon segment (A) and an enol ether segment (B), wherein the content of the enol ether segment (B) is 0.005 to 40 mass % of the content of the unsaturated hydrocarbon segment (A), and a method for decomposing the copolymer, including decomposing the copolymer in the presence of an acid.