摘要:
The invention is a process for preparing linear alternating polymers of sulfur dioxide, ethylene, optionally at least one ethylenically unsaturated hydrocarbon other than ethylene and optionally carbon monoxide having the general formula ##STR1## wherein Z is at least one moiety selected from SO.sub.2 and CO, G is the moiety of at least one ethylenically unsaturated hydrocarbon of at least 2 carbon atoms polymerized through the ethylenic unsaturation, n is an integer of at least 1, and m is an integer of zero or greater, which process comprises contacting sulfur dioxide, ethylene, optionally carbon monoxide, and optionally at least one ethylenically unsaturated hydrocarbon of at least 2 carbon atoms, in the presence of a catalyst obtained from (1) a compound of a Group VIII metal selected from palladium, cobalt and nickel, (2) a bidentate ligand of phosphorus, arsenic, or antimony, and (3) an anion of a non-hydrohalogenic acid having a pKa of less than 6.
摘要:
This invention relates to novel terpolymers of 3-methylcyclopentene, an omega alkynoic acid and sulfur dioxide. Positive radiation sensitive films prepared from the subject terpolymers adhere well to the substrate, demonstrate resistance to cracking and erosion during development and possess excellent edge definition.
摘要:
This invention relates to novel terpolymers of 3-methylcyclopentene, an omega alkynoic acid and sulfur dioxide. Positive radiation sensitive films prepared from the subject terpolymers adhere well to the substrate, demonstrate resistance to cracking and erosion during development and possess excellent edge definition.
摘要:
The instant invention relates to compositions comprising a copolymer of sulfur dioxide and one or more olefins in combination with a hydrocarbon oil which is a mixture of paraffinic, aromatic and naphthenic hydrocarbons having a solubility parameter of about 7 to about 8.5. The olefins are alpha olefins, at least one having a carbon number of 20 or more, more preferably a carbon number of from 20 to 40. The copolymers useful in preparing the compositions of the instant invention are crystalline solids, which are combined with a sufficient amount, preferably from about 5 to 24 pph, of the hydrocarbon oil to yield flexible materials. The above compositions are useful as coatings.
摘要:
Electrically conductive hydrocarbon fuel compositions containing from 0.01 to 40 ppm of an antistatic polysulfone copolymer additive consisting essentially of units derived from sulfur dioxide, C.sub.6.sub.-24 1-alkene and, optionally, an olefin of the formula ##STR1## wherein A is a group having the formula, --(C.sub.x H.sub.2x)--COOH, where x is from 0 to 17, and B is hydrogen or carboxyl; and a process for preparing same.
摘要:
The instant invention relates to novel block copolymers containing olefin sulfur-dioxide segments and a process for their preparation. The olefin of choice is a "strained" olefin thus capable of reaction with SO.sub.2 in the presence of radicals at very high rates. Examples of strained olefins include cyclopropene, cyclobutene, norbornene, and the derivatives thereof. The novel block copolymers are prepared by contacting the olefin and the sulfur dioxide with a polymer under conditions of shearing degradation whereby said polymer is broken down into radical-containing segments which subsequently combine with the olefin and sulfur dioxide to form the novel copolymers described above. The polymer may be selected from the group consisting of polyisobutylene, poly(ethylene oxide), ethylene-propylene copolymers, poly(propylene oxide), polybutadiene, polyisoprene, etc. A novel block polymer formed by this preferred process shows improved properties as compared to physical mixtures of said polymer and olefin-sulfur dioxide copolymers. For example, the novel polymers formed by the preferred process of the instant invention show higher moduli and may be plasticized to higher levels while retaining good physical properties.
摘要:
Electron beam recording media comprise a film of an olefin-SO2 copolymer on a support. Certain of these copolymers give direct print-out relief patterns after exposure to electron beams.
摘要:
A NOVEL CLASS OF ACRYLAMIDE-SULFUR DIOXIDE POLYMERS, A METHOD FOR THEIR PRODUCTION GLYOXAL REACTION PRODUCTS THEREOF AND PAPER TREATED WITH SAID REACTION PRODUCTS, ARE DISCLOSED.
摘要:
OLEFIN POLYSULFONES WHICH ARE THE REACTION PRODUCT OF SULFUR DIOXIDE, AT LEAST ONE ALPHA OLEFIN OF FROM 4 TO 40 CARBON ATOMS AND A MONOMER CHOSEN FROM MONOOLEFINICALLY UNSATURATED CARBOXYLIC ACID CHLORIDES OR MONOOLEFINICALLY UNSATURATED DICARBOXYLIC ANHYDRIDES ARE USEFUL TO COAT AND PROTECT VARIOUS SUBSTRATES. THEY ARE PARTICULARLY USEFUL TO RENDER NATURAL FABRICS SHRINK RESISTANT AND WATER REPELLANT.