摘要:
A semi-crystalline film comprised of a lactide polymer. The lactide polymer comprises a plurality of poly(lactide) polymer chains, residual lactide in concentration of less than about 5 percent and water in concentration of less than about 2000 parts-per-million. A process for manufacturing a semi-crystalline film with the lactide polymer composition is also disclosed.
摘要:
A stable aqueous solution for a hard-surface cleaning detergent comprising a saccharide selected from an alkylsaccharide and an alkenyl-saccharide and an organosilane, wherein said organosilane has at least one hydrolyzable group.
摘要:
Disclosed is a novel compound which is a perfluoroalkylene dianilide compound represented by the general formula ##STR1## in which Rf is a perfluoroalkylene group optionally interruptrd by oxygen atoms to form an ether linkage and R and R.sup.1 are each a hydrogen atom or a monovalent hydrocarbon group. When this compound has two or more hydrogen atoms directly bonded to the silicon atoms in a molecule, the compound is useful as a crosslinking agent for an organosilicon compound having two or more silicon-bonded vinyl groups in a molecule. Alternatively, the compound having two or more silicon-bonded vinyl groups in a molecule is useful as a crosslinking agent for an organosilicon compound having two or more silicon-bonded hydrogen atoms in a molecule. The dianilide compound is prepared by the coupling reaction between a perfluoroalkylene dicarboxylic acid difluoride and an N-trimethylsilyl-N-(3,5-disilylphenyl) amine compound.
摘要:
The invention pertains to a coating composition comprising a polyacetoacetate and a crosslinker for said polyacetoacetate wherein the crosslinker is present in an amount insufficient to crosslink all acetoacetate groups and the polyacetoacetate has a number average molecular weight less than 1000. The coating composition may also comprise an organosilane. The organosilane preferably comprises at least one amino group, amino-containing group, epoxy group, epoxy-containing group, mercapto group, mercapto-containing group, vinyl group, vinyl-containing group, isocyanate group, isocyanate-containing group, ureido group, ureido-containing group, imidazole group or imidazole-containing group. The coating composition is particularly useful as a primer for an aluminium substrate.
摘要:
This invention relates to a rubber composition and to a tire with tread of rubber composition prepared with filler reinforcement, a majority of which is silica reinforcement, together with a silica coupling agent, and a minority is carbon black and conventional rubber compounding ingredients wherein at least one of said compounding ingredients and/or coupling agent is liquid and is provided as being deposited on a specified carbon black carrier. In particular, the carbon black carrier is characterized by having a DBP value in a range of about 280 to about 600 cm.sup.3 /100 g and a BET value in a range of about 550 to about 1200 m.sup.2 /g. The selection of the said carbon black carrier is intended to reduce the electrical volume resistivity of the tread composition.
摘要:
The invention relates to organopolysiloxanes which have aliphatically unsaturated radicals, are soluble to at least 80 wt % in organic solvents selected from xylene and toluol at a temperature of 25.degree. C. and a pressure of from 900 to 1100 hPa and contain at least one unit of the following formula (I) R.sup.1.sub.a R.sub.2-a SiO.sub.2/2, at least one unit of the following formula (II) R.sup.1.sub.b R.sub.3-b SiO.sub.1/2, at least one unit of the following formula (III) O.sub.1/2 R.sub.2 SiO.sub.x YRSiO.sub.2/2, and optionally at least one unit of the following formula (IV) O.sub.1/2 R.sub.2 SiO.sub.x YR.sub.2 SiO.sub.1/2, in which:R can be identical or different and is a monovalent, substituted or unsubstituted, SiC-bonded, aliphatically saturated hydrocarbon radical.R.sup.1 can be identical or different and is a monovalent, SiC-bonded, substituted or unsubstituted, aliphatically unsaturated hydrocarbon radical,a is 0, 1 or 2,b is 0, 1, 2 or 3,x is 0 or 1 andy is a radical --(CR.sup.3.sub.2).sub.n CHR.sup.3 -- with at least two carbon atoms, where n is 0 or an integer from 1 to 3 and R.sup.3 is a hydrogen atom or is as defined for R,with the proviso that the organopolysiloxane includes at least one unit of the formula (II) where b is not 0. It also relates to the preparation of the organopolysiloxanes and the use thereof in crosslinkable materials.
摘要:
A method of optimizing the effects of silica fillers in tire tread rubber compounds includes the use and ordered addition of both dispersing and coupling agents during the rubber mixing process.
摘要:
Polyorganosiloxane gels are prepared using compositions curable by a platinum catalyzed hydrosilation reaction that are characterized by the presence of a non-functional silicone fluid. The gel may contain additional components and may also be formulated into a multi-part system.
摘要:
The organopolysiloxane compositions are prepared by mixing(1) organopolysiloxanes which contain on average at least 2 aliphatic carbon-carbon multiple bonds per molecule,(2) prehydrophobized oxidic reinforcing fillers having a carbon content, obtained by the hydrophobizing, of at least 0.5% by weight and(3) compounds which are chosen from(3a) silanol compounds of the formulaR--[SiR.sub.2 --O--].sub.a H (I)in whichR is identical or different monovalent, C.sub.1 - to C.sub.10 -hydrocarbon radicals which are free from aliphatic carbon-carbon multiple bonds anda has values from 1 to 10, and(3b) saturated C.sub.1 - to C.sub.18 -alkanols.
摘要:
An integrally molded automotive waterproof connector is disclosed which comprises a thermoplastic resin and integrated therewith an oil-bleeding silicone rubber, the thermoplastic resin containing a thermoplastic resin oligomer containing at least one aliphatic unsaturated group. In the connector, the adhesion between the thermoplastic resin and the silicone rubber is satisfactory regardless of the length of storage period as compared with connectors comprising a thermoplastic resin and a silicone rubber integrated therewith after priming. Further, the connector of the present invention is excellent in production efficiency and workability, is reduced in connector housing fitting force, and can retain satisfactory waterproofness.