Abstract:
The present invention relates to use of a sulphur or phosphorous-containing polymer as a processing aid in a polyvinyl chloride polymer composition.
Abstract:
A thiosulfate polymer includes both an electron-accepting photosensitizer component and thiosulfate groups in the same molecule, arranged in random order along the backbone. The thiosulfate polymer composition can be formulated into compositions and applied to various articles, or used to form a predetermined polymeric pattern after photothermal reaction to form crosslinked disulfide bonds, removing non-crosslinked polymer, and reaction with a disulfide - reactive material. Such thiosulfate polymer compositions can also be used to sequester metals in nanoparticulate form, and as a way for shaping human hair in hairdressing operations.
Abstract:
Die Erfindung betrifft Copolymere, welche a1) 30 bis 90 Gew.-% mindestens einer monoethylenisch ungesättigten C 3 -C 8 - Carbonsäure, eines Anhydrids oder wasserlöslichen Salzes derselben, a2) 3 bis 60 Gew.-% mindestens eines Sulfonsäuregruppen enthaltenden Monomers, a3) 3 bis 60 Gew.- % mindestens eines nichtionischen Monomers der Formel (I) H 2 C=C(R 1 )COO-[R 2 -O] 0 -R 3 (I), in der R 1 für Wasserstoff oder Methyl, R 2 für gleiche oder verschiedene, lineare oder verzweigte C 2 -C 6 -Alkylenreste, die blockweise oder statistisch angeordnet sein können, und R 3 für Wasserstoff oder einen geradkettigen oder verzweigten C 1 -C 4 -Alkylrest und o für eine natürliche Zahl von 3 bis 50 stehen, a4) 0 bis 30 Gew.-% eines oder mehrerer weiterer ethylenisch ungesättigter Monomere, die mit a1), a2) und a3) polymerisierbar sind, wobei die Summe aus a1), a2), a3) und a4) 100 Gew.-% ergibt, einpolymerisiert enthalten.
Abstract:
The invention generally relates to zwitterionic polymers (including zwitterionic copolymers), such as polymethacrylic structures, with pendent functional moieties, such as therapeutic or biologic moieties. More particularly, the invention relates to phosphorylcholine- substituted methacrylic polymers prepared by free radical polymerization and click chemistry, for example, and compositions and products comprising same, as well as related methods and uses of the compositions, for example, as biological or therapeutic agents and in drug delivery thereof.
Abstract:
Polymerizable compositions are described comprising: (a) a mixture of thio(meth)acrylate functional monomers comprising: (a)(i) a first thio(meth)acrylate functional monomer, e.g., bis(thiomethacrylate)-1,2-ethylene; and (a)(ii) a second thio(meth)acrylate functional monomer, which is chain extended; (b) an aromatic monomer having at least two vinyl groups, e.g., divinyl benzene; (c) a polythiol monomer having at least two thiol groups, e.g., pentaerythritol tetrakis(3-mercaptopropionate); and (d) a comonomer selected from: (d)(i) an anhydride monomer having at least one ethylenically unsaturated group, e.g., methacrylic anhydride; (d)(ii) a monomer having at least three (meth)acryloyl groups, e.g., pentaerythritol tetrakis(acrylate); and (d)(iii) mixtures of monomers (d)(i) and (d)(ii). A polymerizate of the polymerizable composition has a refractive index of at least 1.57 and an Abbe number of at least 33.
Abstract:
A copolymer containing repeat units formed from the monomers (I) and (II), wherein each R , if present, is independently hydrogen or hydrocarbyl; r is 0, 1 or 2; s is either 2 or 3; R -R are each independently hydrogen or hydrocarbyl; R and R are each independently hydrogen, halo or hydrocarbyl; Pd is the anion formed by loss of a proton from a proton donating group Pd-H; Z is either a bond or hydrocarbyl; R and R are each independently hydrogen, halo or hydrocarbyl; and either (a) A is an electron accepting group and W is either hydrogen or hydrocarbyl, (b) W is an electron accepting group and A is either a bond or hydrocarbyl or (c) both A and W are electron accepting groups. The invention also provides a method for preparing the copolymer by polymerising a mixture of (I) and (II) or their non-ionised precursors, preferably by exposure to ultraviolet radiation. The invention also relates to the uses of the copolymer in adhesive, coating, sealant and stereolithographic compositions.