Hydrocarbon polymers with grafts of polyethers, polylactones, or polyesters from the reaction of phosgene with glycols having from 1 to 4 carbon atoms are disclosed as having good release properties or low adhesion to hydrocarbon rubber materials. The hydrocarbon backbone polymers include EPDM, hydrogenated polybutadiene, and hydrogenated poly(styrene-butadiene) all said polymers having pendant su...

Laminated surgical sponge made of compressed textile fibers which is mainly used in neurological surgery such as brain or spine operations for absorption of body fluids or protection of tissues and other body members. The sponge is very flexible and easily conforms to the tissue contours on which it is placed and it remains in place with no tendency to return to its original shape. This sponge is ...

PCT No. PCT/US92/05905 Sec. 371 Date Sep. 19, 1994 Sec. 102(e) Date Sep. 19, 1994 PCT Filed Jul. 15, 1992 PCT Pub. No. WO93/01772 PCT Pub. Date Feb. 4, 1993A spinal fixation system comprises an elongated fixation plate (13) having an elongated slot (21) with a number of concave depressions (28,25) formed at the top and bottom surfaces (19,17) of the plate. The system further includes a pedicle scr...

PCT No. PCT/DK88/00120 Sec. 371 Date Jan. 16, 1990 Sec. 102(e) Date Jan. 16, 1990 PCT Filed Jul. 14, 1988 PCT Pub. No. WO89/00594 PCT Pub. Date Jan. 26, 1989.It is well known that the use of the blowing agent monofluortrichlormethane, also called Freon 11 or R-11, for the production of polyurethane foam is highly disadvantageous in that R-11 has a decomposing effect on the ozone layer around our p...

A building drum (1) wherein two half drums (9, 10) are moved equally and oppositely along the same axis (6) between a parted idle position and an adjacent forming position; each half drum (9)(10) supporting an annular end element (29) of a tubular, axially deformable forming module (28), an intermediate tubular body (30) of which is defined by a number of side by side, partially superimposed metal...

The invention concerns novel compounds of the formula I I wherein: W are selected from the group consisting of: the groups R5-CO- and R5-CS- wherein: R5 is selected from alkenyl, alkynyl, benzyl, phenyl, substituted alkyl, substituted alkenyl, substituted alkynyl, substituted benzyl, substituted phenyl and the acetal, hemiacetal, oxime, imine and Schiff base derivatives of the group R5-C...

A tissue cutter (2) comprising a shaft (10) having an elongate aperture (36) in the lateral surface near its distal end (6). A wire (14) is disposed axially within the aperture so that it may be moved between a retracted and an exposed configuration. A means (18) for manually moving the wire is provided on the proximal end of the shaft. A means (40) for connecting the proximal end of the wire to a...

PCT No. PCT/GB93/01193 Sec. 371 Date Jun. 9, 1994 Sec. 102(e) Date Jun. 9, 1994 PCT Filed Jun. 4, 1993 PCT Pub. No. WO93/24095 PCT Pub. Date Dec. 9, 1993.A vial connector has a circular array of detents that snap-engage behind the head of a vial to prevent its withdrawal. In a unitary injection molding, the detents could not lock completely or the product could not be removed from the mold. Theref...

A process for making flexible polyurethane foam, employing a silicone surfactant composition containing 5-20 wt % of a defined low molecular weight silicone surfactant and 95-80 wt % of a defined high molecular weight silicone surfactant. Use of the claimed mixture of surfactants provides product foams having improved breathability relative to foams produced using high molecular weight silicone su...

Polyisocyanate-based foams having a uniformly fine cell size are prepared by reacting a polyisocyanate with an isocyanate-reactive compound in the presence of a blowing agent mixture comprising a hydrocarbon component which has four or more carbon atoms and a polyfluorocarbon component which has a boiling point of from about 283 K. to about 393 K. at 760 mm Hg and wherein the boiling point:molecul...

The use of 1,1-difluoroethane (HFC-152a) and dimethyl ether, optionally with up to 50 mole % of water, as the blowing agent is disclosed as an efficient route to a rigid, closed-cell polyurethane or polyisocyanurate foam of improved cell structure and excellent insulation properties.

The use of 1,1-difluoroethane (HFC-152a) with a minimum amount of water, preferably in the absence of water, as the blowing agent is discolored as an efficient route to a rigid closed-cell polyurethane or polyisocyanurate foam of improved cell structure and excellent insulation properties.

Disclosed are mixed halocarbon blowing agents comprising (1) halocarbons boiling below 10 DEG C, (2) halocarbons boiling between 20 DEG C and 35 DEG C, and (3) inert organic liquids having a boiling point of from 35 DEG C to 125 DEG C. Also disclosed are blends of the above mixed blowing agents with active hydrogen-containing compounds, particularly polyols and the rigid closed cell foams prepared...

A process is disclosed comprising mixing selected shrinkage-minimizing halocarbons with selected two-carbon hydrogen-containing halocarbons, HCFC-123, HCFC-123a and HCFC-141b, and using this mixture as a blowing agent to produce minimal shrinkage closed-cell polyurethane foams.

A polysiloxane-polyoxyalkylene composition of the nominal formula: wherein R is an alkyl group having 1 to 3 carbon atoms and R, R', R'' and R''' are individually monovalent polyoxyalkylene polyethers attached to the silicon atom through a difunctional link; and the polyoxyalkylene of R' is a poly(oxypropylene-oxyethylene) ether which contains 20% to 60% oxyethylene by weight and has a...

Paint compositions suitable for forming decals which can be applied to vehicle tire sidewalls. The compositions comprise a saturated elastomer having a glass transition temperature not higher than -40 degrees C., a pigment which is preferably titanium dioxide in an amount in the range of 0.5 to 10 times the weight of elastomer, and a solvent. Compositions of this invention are resistant to ultravi...

For the production of a monoaxially stretched shaped article of polytetrafluoroethylene (PTFE), a pasty composition containing PTFE powder is worked continuously into a moulding, which is passed over a plurality of rollers or rolls, is heated and stretched, the moulding being heated before applying the stretching tension to a temperature of between 327 and 450 DEG C, preferably between 350 and 390...

Perfluoropolyether microemulsions of the oil-in-water or water-in-oil type, consisting of perfluoropolyethers having an average molecular weight of from 1,500 to 10,000, the end groups of which are at least partially of the functionalized type, optionally containing peroxide bridges in the chain and consisting of mixtures of products having different molecular weights, of a perfluorinated surfacta...

The microprocessor control unit is connected by signal lines to devices controlling the fuel system, retarder and antilock (ABS)/antislip (ASR)braking system. It responds to a braking program switch near the driver's left foot, a clutch-pedal switch and sources connected to the tachograph, transmission mode selector lever, economy/hillclimb mode selector,retarder coolant thermometer etc. The redn....