摘要:
The present invention provides a stainproofing agent having the durability capable of maintaining sufficient water- and oil-repellency as well as stainproofing properties before and after cleaning. Disclosed is a stainproofing agent containing (A) a fluroalkyl group-containg copolymer having (I) a structure unit derived from a monomer having a fluoroalkyl group, (II) a structure unit derived from a monomer containing no fluorine, (III) a structure unit derived from vinyl chloride, and (IV) a structure unit derived from a crosslinking monomer; (B) a urethane compound having a fluoroalkyl group, or a copolymer having (V) a structure unit derived from a monomer having a fluoroalkyl group and a carbon-carbon double bond, and (VI) a structure unit derived from a monomer which contains no fluorine atom and has at least one urethane or urea linkage and one carbon-carbon double bond; and (C) an acrylic copolymer containing no fluorine.
摘要:
A fluorine-containing polyether of the formula:R.sub.f.sup.1 CF.sub.2 CF.sub.2 COOR.sub.f.sup.2 (I)orR.sub.f.sup.2 OCO--CF.sub.2 CF.sub.2 R'.sub.f.sup.1 CF.sub.2 CF.sub.2 --COOR.sub.f.sup.2 (II)wherein R.sub.f.sup.1 and R'.sub.f.sup.1 are each a group containing a perfluoroalkyl polyether group, and R.sub.f.sup.2 is a fluorine-containing alkyl group or a fluorine-containing ether group, can be used as a lubricant which has good properties such as lubricity and durability properties.
摘要:
A pipe joint in which an inner pipe is telescoped in an outer pipe includes a first and second expanded portion on the outer pipe. A packing member is disposed in the annular space between the second expanded portion and the inner pipe and a ring element is disposed in aligned annular grooves in the inner circumferential wall of the second expanded portion and the packing member. The ring element has a radial thickness equal to approximately one-half the difference between the inner diameters of the first and second expanded portions and serves to divide the packing member into two rim parts such that the latter are acted upon independently as the inner pipe is telescopically inserted into the outer pipe with the ring element preventing the rim parts from being axially displaced as the inner pipe is telescopically inserted in the outer pipe.
摘要:
A fluorine-containing copolymer including: (A) repeating units derived from a fluorine-containing macromonomer of the general formula: CH2═C(—X)—COO—(Y)1—Z—MfmMrn—H (I) wherein X, Y, Z and MfmMrn are as described herein, and (B) repeating units derived from a polyalkyleneglycol (meth)acrylate.
摘要:
The invention relates to an internal gear pump including: a rotor member including an outer rotor provided with inner teeth to which a torque supplied from a driving device is transmittable; an inner rotor provided with outer teeth engageable with the inner teeth of the outer rotor so to be driven by a rotation of the outer rotor, wherein a rotation axis of the inner rotor is eccentric with respect to a center of the rotor member; a pair of housings provided on opposite sides of the rotor member and the inner rotor to support the rotor member and the inner rotor; and at least one rolling bearing provided between at least one of the housings and the rotor member.
摘要:
Excellent water repellency and Oil repellency are imparted to a textile by a method including (1) preparing a treatment liquid comprising a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent comprises at least one fluorine-containing compound selected from the group consisting of a fluorine-containing polymer and a fluorine-containing low molecular weight compound, and the water- and oil-repellent agent or the treatment liquid contains a cationic emulsifier and/or a salt.
摘要:
An electroacoustic transducer comprises: a lower electrode; an upper electrode including an oscillation portion and a support portion for supporting the oscillation portion at least at a part of a periphery of the oscillation portion; and an insulating layer for insulating the lower electrode from the upper electrode, wherein the upper electrode has an up and down in the oscillation portion and/or in the support portion to provide a cavity between the upper electrode and the lower electrode.
摘要:
Excellent water repellency, Oil repellency, stain block property and yellowing-resistance are imparted to a textile by a method of preparing a treated textile has the steps of (1) preparing a treatment liquid containing a water- and oil-repellent agent and a stain blocking agent, (2) bringing a pH of the treatment liquid to at most 7, (3) applying the treatment liquid to the textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile. The treatment liquid contains a sulfated fatty acid compound.
摘要:
The present invention provides a copolymer whose durability on cleaning is improved while maintaining good water- and oil-repellency. Disclosed is a copolymer having: (i) a fluoroalkyl group, (ii) a urethane or urea linkage, and (iii) a functional group selected from the group consisting of a carboxyl group, a carboxylic anhydride group, an epoxy group, a phosphoric group, an alkoxysilane group, a imine group, a sulfonic group, an amino group, an isocyanate group and a chlorine atom, and a stainproof agent containing the copolymer as an active component.
摘要:
The present invention provides a stainproofing agent composition having the durability capable of maintaining sufficient water- and oil-repellency as well as stainproofing properties before and after cleaning. Disclosed is a stainproofing agent composition containing(A) a polymer having a repeating unit derived from maleate or fumarate having at least one fluoroalkyl group;(B) a fluoroalkyl group-containing copolymer having:(I) a repeating unit derived from a monomer containing a fluoroalkyl group,(II) a repeating unit derived from a monomer containing no fluorine,(III) a repeating unit derived from vinyl chloride, and(IV) a repeating unit derived from a crosslinking monomer; and(C) an acrylic copolymer containing no fluorine, which is optionally present.