Specified Rate-affecting Material Is A Peroxide Patents (Class 522/24)
  • Patent number: 4820744
    Abstract: A combined chemical-light-polymerization type composition for dental restoration consists of a formulation A composed mainly of a. an ethylenically polymerizable unsaturated compound, b. a photopolymerization initiator and c. a reducing agent, and a formulation B composed mainly of d. a filler and e. an organic perioxide. The formulations A and B are separately packaged and designed to be mixed for use.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: April 11, 1989
    Assignee: G-C Dental Industrial Corp.
    Inventors: Takao Kubota, Tetsuro Sakuma, Ryoji Nakazato
  • Patent number: 4816496
    Abstract: Disclosed are photocurable compositions which comprise(A) a compound having at least one epoxy group and at least one photocurable unsaturated ethylenic double bond within the same molecule;(B) an organometallic compound and(C) a silicon compound capable of generating silanol group by irradiation of light, or comprise(A) a compound having at least one epoxy group and at least one photocurable unsaturated ethylenic double bond within the same molecule;(E) an epoxy compound;(F) an organic phosphorus compound; and(G) a photosensitizer.The compositions of the present invention have excellent film characteristics such as good adhesion property, light resistance, heat resistance and weathering resistance.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: March 28, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Moriyasu Wada, Shuichi Suzuki, Yuusuke Wada, Shuzi Hayase, Yukihiro Mikogami
  • Patent number: 4808638
    Abstract: A curable thiol-ene formulation comprising(a) a polythiol(b) a 'ene compound having a plurality of groups of the formula: ##STR1## where Q is CH.sub.2, CHCH.sub.3, C(Ch.sub.3).sub.2, O, S, NR.sup.1 or SO.sub.2 R.sup.1 is H or alkyl, and m is 0-10, and(c) an effective amount of a free radical initiator.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: February 28, 1989
    Assignee: Loctite Corporation
    Inventors: Walter J. Steinkraus, John Woods, John M. Rooney, Anthony F. Jacobine, David M. Glaser
  • Patent number: 4772494
    Abstract: Method of spinning fibers and coating from an organopolysilazane composition that can be crosslinked by an energy input. The organopolysilazane composition comprises an organopolysilazane and a free radical generator in an amount effective to crosslink the organopolysilazane. The energy input capable of generated the radical may be provided in the form of heat, ultraviolet radiation, an electron beam, and the like.The crosslinked organopolysilazane compositions exhibit good thermal behavior and, in particular, can be used, after pyrolysis, as precursors of ceramic products.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: September 20, 1988
    Assignee: Rhone-Poulenc Specialites Chimiques
    Inventors: Hugues Porte, Jean-Jacques Lebrun
  • Patent number: 4766055
    Abstract: Disclosed is a photopolymerizable composition which is very sensitive to visible light. The composition comprises a polymerizable compound and a photopolymerization initiator wherein the photopolymerization initiator comprises (a) a particular xanthene or thioxanthene dyestuff, (b) a photosensitizer selected from the group consisting of N-phenylglycine, 2,4,6-tris(trichloromethyl)-1,3,5-triazine, and a mixture of p-dimethylaminobenzoic acid isopentyl ester and 2,4-diisopropylthioxanthone, and (c) a peroxide.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: August 23, 1988
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Masami Kawabata, Koichi Kimoto, Yasuyuki Takimoto
  • Patent number: 4746685
    Abstract: A light curable dental composition is provided. The composition comprises an ethylenic unsaturated compound and a light polymerization initiator. The light polymerization initiator is selected from a combination of an organic peroxide and a pyrylium salt compound of: ##STR1## Wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group and the like, X stands for an oxygen or sulfur atom and Y for an anionic functional group; a polyperoxy ester containing a benzophenone group; and a combination the polyperoxy ester and an .alpha.-diketone.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: May 24, 1988
    Assignee: Nippon Oil and Fats Co., Ltd.
    Inventors: Eiichi Masuhara, Yoshinori Kadoma, Takeo Matsumoto, Takeshi Komai, Eiichi Yamada, Osamu Nakachi, Godo Irukayama
  • Patent number: 4734444
    Abstract: Mixtures which are curable by heating or irradiation with actinic light contain one or more cationically curable compounds, such as an epoxy, an olefinically unsaturated monomer, amino resin or phenolic resin, and as a cationically active curing catalyst one or more N-sulfonylamino-sulfonium salts of the formula ##STR1## such as N-p-toluenesulfonyl-N-methylaminodiphenylsulfonium hexafluorophosphate with or without quinones or peroxides are suitable, inter alia, for producing moldings, coatings, relief images and resist patterns.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: March 29, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Henne, Wolfram Ochs, Helmut Tesch, Gunnar Schornick, Reinhold J. Leyrer
  • Patent number: 4722988
    Abstract: An organopolysilazane composition that can be crosslinked by an energy input. The organopolysilazane composition comprises an organopolysilazane and a free radical generator in an amount effective to crosslink the organopolysilazane. The energy input capable of generating the radical may be provided in the form of heat, ultraviolet radiation, an electron beam, and the like.The crosslinked organopolysilazane compositions exhibit good thermal behavior and, in particular, can be used, after pyrolysis, as precursors of ceramic products.
    Type: Grant
    Filed: May 6, 1986
    Date of Patent: February 2, 1988
    Assignee: Rhone-Poulenc Specialites Chimiques
    Inventors: Hugues Porte, Jean-Jacques Lebrun
  • Patent number: 4707431
    Abstract: This invention relates to an optical information recording medium comprising a substrate provided at least with an underlayer and a recording layer thereon, said underlayer being prepared by curing a light-curable composition containing a reducing agent, a photo-polymerization initiator and acrylate monomer and/or methacrylate monomer and/or their corresponding oligomer.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: November 17, 1987
    Assignee: Ricoh Co., Ltd.
    Inventor: Masaakira Umehara
  • Patent number: 4702990
    Abstract: The present invention provides a photosensitive resin composition used to form a top resist layer of a multilayer resist system, the composition comprising a photosensitive polyphenylsilsesquioxane represented by the following general formula (I) of: ##STR1## wherein X is selected from the group consisting of acryloyloxymethyl, methacryloyloxymethyl, and cinnamoyloxymethyl; and l, m and n are zero or positive integers but l and m do not take the value of zero simultaneously; and a bisazide compound added to act as a cross-linking agent.The photosensitive resin composition has high sensitivity to UV light and excellent resistance to reactive ion etching under oxygen gas (O.sub.2 RIE).
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: October 27, 1987
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Akinobu Tanaka, Masao Morita, Saburo Imamura, Toshiaki Tamamura, Osamu Kogure
  • Patent number: 4684670
    Abstract: Novel UV-curable silicone release coating compositions and photocatalysts therefor are provided which include hydrogen-functional and vinyl-functional photoreactive terpolymers, which are especially compatable with certain perbenzoate ester photocatalysts. The addition of certain polyaromatic photosensitizers to enhance cure is also disclosed.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: August 4, 1987
    Assignee: General Electric Company
    Inventors: Richard P. Eckberg, Richard A. Striker, Frank J. Modic
  • Patent number: 4674980
    Abstract: A filled-resin composition useful for porcelain repair and as a dental composite and therefore made up of non-toxic materials and a method for repairing porcelain or teeth. The composition comprises a methacrylate functional resin usable in dental composites, powdered filler-colorant therein, at least one photoinitiator for the resin in an amount sufficient to initiate polymerization and complete it in depth within about half a minute when exposed to a visible-light output of at least 5,000 foot candles, the photoinitiator being an exciplex of (1) an carbocyclic ketone or acetal and (2) either ethyl-4-dimethyl amino benzoate or ethyl-2-dimethyl amino benzoate, and at least one accelerator-free peroxide curing agent for the resin in an effective amount for completing polymerization within about one-half hour of any portion of the resin not receiving sufficient light to effectuate complete cure before then.
    Type: Grant
    Filed: September 22, 1983
    Date of Patent: June 23, 1987
    Assignee: Den-Mat, Inc.
    Inventors: Robert L. Ibsen, William R. Glace, Patricia A. Jensen
  • Patent number: 4668712
    Abstract: A photopolymerizable composition composed of a polymerizable monomer and an initiator capable of polymerizing said monomer upon exposure to visible light, characterized in that said initiator consists essentially of (a) at least one kind of photosensitizer selected from an .alpha.-diketone, quinone, and derivatives thereof, and (b) at least one kind of accelerator selected from an aldehyde containing no amino groups and derivatives thereof.
    Type: Grant
    Filed: January 7, 1985
    Date of Patent: May 26, 1987
    Assignee: Kuraray Co., Ltd.
    Inventors: Kenichi Hino, Junichi Yamauchi, Koji Nishida
  • Patent number: 4666951
    Abstract: There is disclosed a photo-curable epoxy resin type composition comprising an epoxy resin, an aluminum compound, a silicon compound having a peroxysilyl group and a photosensitizer.The compositions of the present invention can suitably be used for wide varieties of electrical applications.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: May 19, 1987
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Yasunobu Onishi, Shuzi Havase, Shuichi Suzuki, Moriyasu Wada
  • Patent number: 4631309
    Abstract: Equipment for the exploration and/or production of petroleum and natural gas having elastomeric components have high resistance to materials encountered if the elastomeric components are shaped from a hydrogenated butadiene-acrylonitrile copolymer with a residual double bond content less than 1% and unhydrogenated nitrile groups.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: December 23, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Joachim Thormer, Friedrich Leibbrandt, Zsolt Szentivanyi, Hartmuth Buding
  • Patent number: 4608312
    Abstract: Novel UV-curable silicone release coating compositions and photocatalysts therefor are provided which include mercaptoalkoxyalkyl-functional polysiloxanes and vinyl-functional photoreactive terpolymers, both of which are especially compatable with certain perbenzoate ester photocatalysts. The addition of certain polyaromatic photosensitizers to enhance cure is also disclosed.
    Type: Grant
    Filed: July 19, 1985
    Date of Patent: August 26, 1986
    Assignee: General Electric Company
    Inventors: Richard P. Eckberg, Richard A. Striker, Frank J. Modic
  • Patent number: 4605465
    Abstract: A UV and thermally curable composition comprising(1) a liquid, ethylenically unsaturated monomer, oligomer or prepolymer of the formula: ##STR1## wherein R is H or CH.sub.3, R.sub.1 is an organic moiety and n is at least 2,(2) a thermal initiator for (1) selected from the group consisting of substituted or unsubstituted pinacols, azo compounds, thiurams, organic peroxides and mixtures thereof,(3) a photoinitiator for (1) selected from the group consisting of aldehyde and ketone carbonyl compounds having at least one aromatic nucleus attached directly to the ##STR2## group, benzoin alkyl ethers, diethoxyacetophenone and 2,2-dimethoxy-2-phenylacetophenone,(4) a thermoplastic material, and(5) a non-polymerizable plasticizer for (4).The exposure of the composition to UV radiation under atmospheric conditions and heat in seriatim results in a cured solid product which can be utilized as adhesives, coatings, gaskets, sealants, resists and the like.
    Type: Grant
    Filed: October 4, 1984
    Date of Patent: August 12, 1986
    Assignee: W. R. Grace & Co.
    Inventor: Charles R. Morgan
  • Patent number: 4602076
    Abstract: A photopolymerizable composition which comprises at least one ethylenically unsaturated polymerizable monomer, at least one selected ketone and at least one organic peroxide. The compositions are useful in the preparation of adhesives, paints and varnishes particularly in dental applications and exhibit reduced air inhibition on being cured by visible radiation in the range 400 m.mu. to 500 m.mu..
    Type: Grant
    Filed: September 5, 1985
    Date of Patent: July 22, 1986
    Assignee: Imperial Chemical Industries PLC
    Inventors: Maurice J. Ratcliffe, Derek J. Shaw, Peter A. Robinson
  • Patent number: 4587137
    Abstract: There is provided a method for making curable compositions containing silicon-bonded hydrogen atoms and silicon-bonded olefinic radicals, the improvement comprising adding at least one free radical type photoinitiator and at least one precious metal or precious metal-containing hydrosilation catalyst so that crosslinking is effected by two separate mechanisms. The curable compositions and articles made therefrom are also provided.
    Type: Grant
    Filed: September 19, 1985
    Date of Patent: May 6, 1986
    Assignee: General Electric Company
    Inventor: Richard P. Eckberg