专利检索_..由硫或含硫化合物与醛或酮专利检索_..由硫或含硫化合物与醛或酮专利检索查询

序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
141	PREPARATION OF A HIGH MOLECULAR WEIGHT POLY(ARYLENE SULFIDE KETONE)	CA540015	1987-06-18	CA1259442A	1989-09-12	GAUGHAN ROGER G
A process, and product produced therefrom, for preparing a high molecular weight poly(arylene sulfide ketone) from the reaction product of an alkali metal bisulfide with an alkali metal hydroxide, employing molar excess of alkali metal bisulfide with respect to the alkali metal hydroxide. A process, and product produced therefrom, for preparing a high molecular weight poly(arylene sulfide ketone) employing an alkali metal sulfide and an alkali metal hydrosulfide, wherein the alkali metal sulfide is added in a molar excess with respect to the alkali metal hydrosulfide.
142		NO873691	1987-09-03	NO873691D0	1987-09-03	GAUGHAN ROGER GRANT
A process, and product produced therefrom, for preparing a high molecular weight (poly(arylene sulfide ketone) from the reaction product of an alkali metal bisulfide with an alkali metal hydroxide, employing molar excess of alkali metal bisulfide with respect to the alkali metal hydroxide. A process, and product produced therefrom, for preparing a high molecular weight poly(arylene sulfide ketone) employing an alkali metal sulfide and an alkali metal hydrosulfide, wherein the alkali metal sulfide is added in a molar excess with respect to the alkali metal hydrosulfide.
143	Process for preparing thiophene polymers	DE3417942	1984-05-15	DE3417942A1	1985-11-21	SIMAK PETR DR; SCHLAG JOHANNES DR; NAARMANN HERBERT DR
Process for preparing electrically conductive fine-particulate thiophene polymers under the action of concentrated sulphuric acid and oxidants as catalyst. The fine-particulate polymers can be used for producing mouldings which are used as electrical conductors or as electrodes.
144	ACETALS OF ADDUCTS OF ACROLEIN AND ISOCYANURIC ACID AND POLYMER COMPOSITIONS COMPRISING ACETALS OF ADDUCTS OF ACROLEIN AND ISOCYANURIC ACID	CA392791	1981-12-21	CA1155845A	1983-10-25	COHEN SAUL M; LEBLANC JOHN R
Acetals are prepared by reacting monohydric primary or secondary alcohols with acrolein-isocyanuric acid adducts The acetals are polymerizing and crosslinking agents in preparing polymer compositions of the acetals and polyfunctional compounds containing acetalreactive groups such as alcohols, thiols, oxiranes and amides. Such polymer compositions are useful in molding, laminating, and adhesive applications.
145	ELEMENTAL SULFUR HAVING IMPROVED IMPACT RESISTANCE	CA266998	1976-12-02	CA1092735A	1980-12-30	BERTOZZI EUGENE R
Polysulfide-polyether and polysulfide-polyformal polymers having terminals inert to oxidative curing dissolve rapidly in molten elemental sulfur resulting in improved impact strength for the cooled solidified product which are useful in road marker compositions, sub-bases for roadways and mortar in construction of buildings.
146	VULCANIZABLE ELASTOMER FROM THIODIETHANOL	AU2892077	1977-09-19	AU2892077A	1979-03-29	LI TSI TIEH; SAXON ROBERT
Vulcanizable elastomeric compositions derived from thiodiethanol and more particularly, vulcanizable elastomeric compositions comprising the reaction product of a major proportion of thiodiethanol and a minor proportion of a low molecular weight, hydroxyl terminated aromatic or cycloaliphatic polyester.
147	POLYTHIOETHERS	AU2883577	1977-09-15	AU2883577A	1979-03-22	SINGH AJAIB; SCHMITT JOSEPH LAWRENCE JR

148		DE2735940	1977-08-10	DE2735940A1	1978-02-16	BERTOZZI EUGENE R
Polysulfide-polyether and polysulfide-polyformal polymers having terminals inert to oxidative curing dissolve rapidly in molten elemental sulfur resulting in improved impact strength for the cooled solidified product.
149		FR7403461	1974-02-01	FR2218355B1	1977-09-16

150		NL7401427	1974-02-01	NL154231B	1977-08-15

151	PROCESS FOR PRODUCING HALOGEN-TERMINATED POLYSULPHIDE POLYMERS	GB485274	1974-02-01	GB1430492A	1976-03-31
1430492 Halogen-terminated polysulphide polymers THIOKOL CORP 1 Feb 1974 [20 Feb 1973] 4852/74 Heading C3R Halogen-terminated polysulphide polymers or copolymers are prepared by (a) either poly. merizing a polythiodiglycol or copolymerizing a polythiodiglycol and formaldehyde by heating preferably at 60-140‹ C. in the presence of a Lewis acid catalyst whilst removing the water of reaction, and (b) converting the resultant hydroxyl terminals on the poly(polythiodigly. col) or poly(polythiodiglycol-formaldehyde) copolymer to halogen terminals by reaction with either an inorganic halogenating agent such as HCl, HBr, HI, HF, SOCl 2 , SOBr 2 , PO 2 Cl 2 , PCl 3 , PCl 5 , or a monohalogenated organic compound such as a monohalogenated epoxide or alcohol, e.g. an epihalohydrin or an ethylene halohydrin. Suitable acid catalysts have a pH of 4 or less and include HBr, HCl, H 2 SO 4 , H 3 PO 4 , FeCl 3 , p-toluene sulphonic acid and sulphamic acid. Useable polythioglycols have the formula HOC 2 H 4 S x C 2 H 4 OH, where x=2-5. The water of reaction may be removed by azeotropic distillation in the presence of a water immiscible solvent, or by vacuum distillation. The conversion to halogen terminals may occur during or after the polymerization reaction. The molar ratio of the polythiodiglycol to HCHO may be greater or less than 1 : 1. The resultant halogen-terminated polymers may be reacted with an alkali metal or alkaline earth metal polysulphide, e.g. Na 2 S x , to form a high M.wt. latex dispersion which can be converted to -SH terminated elastomers by the usual methods.
152		AU6509074	1974-02-01	AU465593B2	1975-10-02

153	HALOGEN-TERMINATED POLYSULFIDE POLYMERS	AU6509074	1974-02-01	AU6509074A	1975-08-14	BERTOZZI EUGENE RIBELLO

154	Verfahren zur Herstellung von Polymethylensulfiden und deren Verwendung	CH1624566	1966-11-11	CH510708A	1971-07-31	NATHANIEL LINCOLN REMES; HSI HWA JESSE CHIA

155	Improvements in the production of Poly (Methylene Sulphide)	GB4979266	1966-11-07	GB1171452A	1969-11-19
1,171,452. Preparing polythiomethylenes. STAUFFER CHEMICAL CO. 7 Nov., 1966 [15 Nov., 1965], No. 49792/66. Heading C3P. Polythiomethylenes are obtained by reacting hydrogen sulphide with formaldehyde in the presence of, as catalyst, a metal trithiocarbonate. The formaldehyde may be gaseous, in aqueous solution or as solid paraformaldehyde. In the examples H 2 S and an aqueous formaldehyde solution are reacted in the presence of NaCS 3 and in some cases ethylene glycol, its dimethyl ether or a commercial dispersant. The polythiomethylene obtained is suitably treated with mineral acid, deionized water and then dried.
156	Novel polymers and their production	GB3433665	1965-08-11	GB1106017A	1968-03-13
The invention comprises polymeric mercaptals containing units of formula where R is an arylene radical. The polymers are prepared by reacting formaldehyde (or equivalent) with a compound containing aromatic rings having two -SH groups attached to them by methylene groups, in the presence of an acid-reacting condensation catalyst. In Examples polymeric mercaptals are prepared from p-xylylene-dimercaptan and paraformaldehyde, p-xylylene-dimercaptan and dibutylformal, 2,5-bismercaptomethyl-p-xylene and paraformaldehyde, and from bismercaptomethyl mesitylene and paraformaldehyde.
157		DES0096939	1965-05-04	DE1259569B	1968-01-25	SCHMIDT DR MAX

158		BE689660D	1966-11-14	BE689660A	1967-05-16
Poly (methylene sulphide) having repeating CH2S units is prepared by reacting hydrogen sulphide and formaldehyde in the presence of a catalytic amount of a water soluble metal salt of trithiocarbonic acid. Poly (methylene sulphide) containing repeating CH2S units, in the form of a free flowing white powder with a m.p. generally above 220 deg.C. The thermal stability may be improved by reacting with agents which either give terminal ethylsulphonyl, acyl, or hydrocarbyl groups, or give polymers in which the CH2S units are interrupted by these groups. The modified polymers are suitable for the prodn. of fibres, extrudates, and mouldings.
159		FR964396	1964-02-19	FR1394209A	1965-04-02

160		BE645515	1964-03-20	BE645515A	1964-09-21
The invention comprises liquid oligopolythioformaldehydes corresponding to the formula HS(CH2S)nH, in which the mean value of the number n can vary from 2 to 8, which are liquid at ambient temperature and contain more than 69.5% by weight of sulphur. They may be obtained by reacting gaseous hydrogen sulphide with an aqueous solution of formaldehyde, preferably to give a solution having a concentration of formaldehyde between 1% and 50%, at a temperature between 70 DEG and 90 DEG C., preferably as close as possible to 80 DEG C., the hydrogen sulphide being injected into the said solution until it is completely saturated and until the polythioformaldehyde which has formed remains liquid after the solution has been cooled to normal temperature. The preferred polythioformaldehydes have a molecular weight in the range from 170 to 230 and do not contain more than 0.16% by weight of oxygen. In one embodiment water is first saturated with H2S and then the formaldehyde is introduced along with sufficient H2S to maintain the saturation of the solution until the required product is obtained.

3 4 5 6 7 8 9 10 11 12

IPRDB

热门服务

关于我们

友情链接

联系方式