Abstract: A transparent ocular lens material comprising a condensation polymer prepared by the condensation polymerization of a monomer mixture comprising (A) an aromatic tetracarboxylic acid dianhydride and (B) at least one diamino compound selected from (a) a silicon-containing diamine, (b) a diamino-substituted benzene and (c) a diamino-substituted diphenyl. The ocular lens material is excellent in transparency, having high oxygen permeability and moreover, excellent in heat resistance, ultraviolet-ray absorbing property and forming and processing property. Therefore, the ocular lens material can be suitably used in contact lenses, intraocular lenses, and the like.

Abstract: A soft ocular lens material prepared by copolymerizing copolymer components consisting essentially of:(A) from 5 to 70 parts by weight of a fluorine-containing (meth)acrylate;(B) from 5 to 60 parts by weight of an alkoxy-containing (meth)acrylate;(C) from 3 to 45 parts by weight of a polysiloxane macromonomer having polymerizable groups at both terminals, of the formula I: ##STR1## (D) from 3 to 40 parts by weight of a polysiloxane macromonomer having polymerizable groups bonded via one or two urethane bonds to the siloxane main chain, of the formula II: ##STR2##

Abstract: A vinyl copolymer is provided comprising a silanol group-containing (meth)acryl siloxane unit of formula (1): ##STR1## wherein R.sup.1 is hydrogen or methyl, R.sup.2, R.sup.3, and R.sup.4 are independently a monovalent C.sub.1 -C.sub.8 hydrocarbon group or a siloxy group, R.sup.5 is a monovalent C.sub.1 -C.sub.8 hydrocarbon group, n=1 to 12, and a=0 or 1. The vinyl copolymer is prepared by copolymerizing a polymerizable vinyl monomer with a silanol group-containing (meth)acryl siloxane in the presence of a radical initiator or by emulsion polymerizing a polymerizable vinyl monomer with a silanol group-containing (meth)acryl siloxane in an aqueous medium in the presence of a surfactant and a polymerization initiator. The copolymer is blended with a condensation catalyst to form a room temperature curable resin composition which crosslinks in the presence of moisture into a cured coating having weatherability, flexibility, and adherence.

Abstract: Novel organopolysiloxanes having one silanol group within a molecule and the method for manufacturing them at high purity and high yield. The organopolysiloxanes having a silanol group are expressed by the formula (1) below: ##STR1## wherein R.sup.1 is a monovalent hydrocarbon group with 1 to 8 carbon atoms, each of R.sup.2, R.sup.3 and R.sup.4 is a monovalent hydrocarbon group with 1 to 8 carbon atoms or a siloxyl group expressed by --OSiR.sup.5 R.sup.7, wherein R.sup.5, R.sup.6 and R.sup.7 are monovalent hydrocarbon groups with 1 to 8 carbon atoms, Y is either a hydrogen atom, a halogen atom, or a monovalent hydrocarbon group with 1 to 12 carbon atoms, n is an integer of from 0 to 12, and a is either 0 or 1, with the proviso that the grouping Y--(CH.sub.2).sub.n --Si does not includes H--Si, CH.sub.3 --Si or a hydrolyzable silyl group.

Abstract: The object of the present invention is to provide a wiring board fabrication process which is, not only so smooth on the surface that a fine wiring pattern can be formed thereon, but also suitable for mounting electronic parts having fine pitch terminals.The present invention is a fabrication process of a wiring board which comprises a wiring conductive line embedded in the surface of an insulating substrate so that the upper face of the conductive line and the surface of the substrate are flat, and a through-hole land which is a conductive portion projected from the surface of the substrate in a through-hole portion, which is characterized in removing the conductive portion projected from the surface of the substrate in the through-hole portion so as to have a flat surface on the surface of the substrate.

Abstract: An ocular lens material made of a copolymer consisting essentially of (A) a polysiloxane macromonomer having polymerizable groups bonded by one or more urethane bonds to the siloxane main chain and (B) an alkyl (meth)acrylamide, wherein the weight ratio of the polysiloxane macromonomer to the alkyl (meth)acrylamide ranges from 10:90 to 90:10.

Abstract: A soft ocular lens material obtained by copolymerizing polymerizable components comprising (A) a fluorine-containing (meth)acrylate having a hydroxyl group of the formula (I): ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group, R.sup.2 is a C.sub.5-15 perfluoroalkyl group, and n is 0 or 1, (B) a hydrophilic monomer, and (C) at least one monomer selected from the group consisting of silicon-containing (meth)acrylates and siloxane-containing styrene derivatives, wherein the ratio of the amount of the fluorine-containing (meth)acrylate (A) to the amount of the hydrophilic monomer (B) is from 20/80 to 70/30 by weight ratio, and the ratio of the total amount of the fluorine-containing (meth)acrylate (A) and the hydrophilic monomer (B) to the amount of the monomer (C) is from 30/70 to 90/10 by weight ratio.

Abstract: An ocular lens material comprising a copolymer prepared by polymerizing a monomer mixture comprising, as main components, (A) 15 to 40% by mole of a fluoroalkyl (silicon-containing alkyl) fumarate, (B) 10 to 50% by mole of a styrenic monomer, (C) 5 to 35% by mole of a hydrophilic monomer, and (D) 0.1 to 20% by mole of a crosslinkable monomer. The ocular lens material is excellent in all of transparency, oxygen permeability, mechanical strength and hardness. Further, the material is excellent in hydrophilic property in spite of its low water absorption.

Abstract: An ocular lens material made of a copolymer comprising, as main copolymerizable components, (A) a polysiloxane macromonomer having polymerizable groups bonded via one or more urethane bonds to the siloxane main chain and (B) an alkyl (meth)acrylamide, wherein the weight ratio of the polysiloxane macromonomer to the alkyl (meth)acrylamide is from 5/95 to 90/10.

Abstract: Organic silicon compounds which are expressed by the general chemical formulae (I) or (II): ##STR1## wherein R.sup.1 is a monovalent organic group with 1 to 8 carbon atoms; R.sup.2, R.sup.3 and R.sup.4 in each equation are independent and either a monovalent organic group with 1 to 8 carbon atoms or a siloxyl group expressed by ##STR2## wherein R.sup.5, R.sup.6 and R.sup.7 are independent in each equation and they are a monovalent organic group with 1 to 8 carbon atoms; and a is either 0, 1 or 2. The novel organic silicon compounds possess both a polymerizable double bond and organopolysiloxane within the same molecule. These compounds are superior in their polymerizability and copolymerizability and are useful as polymer reforming agents.

Abstract: An ocular lens material comprising a copolymer prepared by polymerizing a monomer mixture comprising, as main components, (A) 15 to 40% by mole of a fluoroalkyl (silicon-containing alkyl) fumarate, (B) 35 to 55% by mole of an N-vinyl lactam, (C) 3 to 30% by mole of at least one of acrylic acid and methacrylic acid, and (D) 0.1 to 20% by mole of a crosslinkable monomer. The ocular lens material is excellent in all of transparency, oxygen permeability, mechanical strength and hardness. Further, the material is excellent in hydrophilic property in spite of its low water absorption.

Abstract: A process for removing acidic impurities from alkoxysilanes obtained from halogenosilanes and alcohols which inevitable contain small amounts of acidic impurities is described. In the process, at least one member selected from alkali metal salts of alcohols and amines having a great steric hindrance as having a bulky substituent is added to the alkoxysilane for a time sufficient to neutralize the acidic impurities and the mixture is purified by distillation to obtain a substantially acidic impurity-free alkoxysilane.

Abstract: There is disclosed a method of symmetrizing a three-dimensional NMR spectrum which is obtained by applying a preparation pulse or pulse sequence, sampling the resulting free induction decay signals with a sequence having two evolution periods and a detection period to obtain data S (t.sub.1, t.sub.2, t.sub.3), and taking the Fourier transform of the data to create the three-dimensional NMR spectrum .alpha. (.omega..sub.1, .omega..sub.2, .omega..sub.3). The 3D NMR spectrum is sliced perpendicularly to the frequency axis .omega..sub.3. Data about the 3D NMR spectrum is arithmetically processed in such a way that peaks having no symmetrical partners at symmertical positions determined also taking account of the direction of the frequency axis .omega..sub.3 are found and erased to obtain a spectrum .alpha..sub.1 (.omega..sub.1, .omega..sub.2, .omega..sub.3).

Abstract: The platinum catalyst composition comprises a diolefin component represented by the following general formulaCH.sub.2 .dbd.CH--R--CH.dbd.CH.sub.2wherein R is a divalent saturated hydrocarbon radical, and a platinum compound component. The platinum catalyst composition is extremely useful for hydrosilylation of an organosilicon compound having a .tbd.SiH radical with an olefin. When used for the hydrosilylation reaction, it inhibits effectively the isomerization of the starting material olefin, thereby enabling the intended organosilicon compound to be obtained in a high yield.

Abstract: The platinum catalyst composition comprises a diolefin component represented by the following general formula:CH.sub.2 .dbd.CH--R--CH.dbd.CH.sub.2wherein R is a divalent saturated hydrocarbon radical, and a platinum compound component. The platinum catalyst composition is extremely useful for hydrosilylation of an organosilicon compound having a .tbd.SiH radical with an olefin. When used for the hydrosilylation reaction, it inhibits effectively the isomerization of the starting material olefin, thereby enabling the intended organosilicon compound to be obtained in a high yield.

Abstract: A primer composition comprising a product of the reaction between an organosilane compound of the following general formula (A) and a phenyl group-free organic diisocyanate compound to acquire a high curing speed and excellent adhesiveness to both inorganic and organic materials and to resist generation of stain after curing: ##STR1## wherein R.sup.1 represents a monovalent hydrocarbon residue containing 1 to 4 carbon atoms; R.sup.2 represents a divalent hydrocarbon residue containing 1 to 4 carbon atoms; and n represents 0, 1 or 2.

Abstract: Door mounted extendable protectors for protection against damage from bumping by an opening door of another vehicle parked closely adjacent in side by side relation. Resilient bumper elements are mounted outside each car door extended substantially the front to back length of the door. The door extending mechanism is connected via bumper element mounting rods that extend from connection to the extending mechanism out through the outer sheet metal skin of the door to connection with the bumper element. In one embodiment the door bumper extending mechanism is also a retracting mechanism while in another embodiment the bumper element must be manually returned to the retracted state flush against the door when the extending mechanism is not activated.

Abstract: A soft ocular lens material is formed of a copolymer consisting essentially of:(A) from 5 to 70 parts by weight of a fluorine containing (meth)acrylate;(B) from 5 to 60 parts by weight of an alkyl (meth)acrylate;(C) from 3 to 45 parts by weight of a polysiloxane macromonomer having pllymerizable groups at both terminals; and(D) from 3 to 40 parts by weight of a polysiloxane macromonomer having polymerizable groups bonded via one or two urethane bonds to the siloxane main chain.

Abstract: A photopolymerizable composition comprised of an addition polymerizable material, a photoinitiator, a thermal addition polymerization inhibitor and a polymeric binding agent. The addition polymerizable material is comprised of a defined monoethylenically unsaturated acrylate and one or more non-gaseous compounds having at least two terminal ethylenic groups. The photopolymerizable composition displays superior flexibility and develops and strips more efficiently when compared to a like composition but in the absence of the acrylate. The photopolymerizable composition may be in the form of sheet or roll on a film support which can be laminated to a substrate and can be used in the preparation of printed circuit boards.