Abstract: An improved method is provided for copolymerizing vinyl chloride with allyl glycidyl ether and a vinyl ester. The copolymers so formed include 70-99 weight percent of vinyl chloride, 0.05-15 weight percent of allyl glycidyl ether, and 0.05-15 weight percent of a vinyl ester, preferably vinyl acetate. The copolymers of this invention can be compounded to provide films exhibiting improved heat stability, low haze, and good adhesion to solid surfaces such as glass and metal. The compounded resins thus obtained may be especially advantageously used in forming the interlayer of laminated safety glazings, such as vehicle windshields and architectural glazings.The copolymerization of vinyl chloride, allyl glycidyl ether, a vinyl ester and small amounts of an unsaturated organic trifunctional silane provide self-adhesion without gelation.

Abstract: Disclosed is a process for esterifying and/or transesterifying a polymer having a polyethylenic backbone and pendant acid and/or ester moieties comprising contacting a melt of the polymer with a transesterifying compound so that the polymer undergoes esterification and/or transesterification but not alcoholysis. The esterified or transesterified polymer also has pendant ester moieties which differ in kind and/or number from the unreacted polymer. In one embodiment, the process also comprises adding an amount of a transition metal salt that is effective to promote oxygen scavenging. Also in a further embodiment, the process comprises irradiating the transesterified polymer with actinic radiation to reduce the induction period before oxygen scavenging commences. Also disclosed are compositions comprising a component which comprises an ethylenic or polyethylenic backbone and a pendant or terminal moiety comprising a benzylic, allylic, or ether-containing radical.

Abstract: A fluorine-containing copolymer comprising:(a) from 0.05 to 20 mol % of polymer units based on at least one fluorinated comonomer selected from the group consisting of fluorinated comonomers of the following formulae (1), (2) and (3):X--R.sup.f --CY.dbd.CH.sub.2 (1)X--R.sup.f --O--CF.dbd.CF.sub.2 (2)CF.sub.3 --(CF.sub.2).sub.n --(O--CF(CF.sub.3)--CF.sub.2).sub.m --O--CF.dbd.CF.sub.2 (3)wherein Y is a fluorine atom or a hydrogen atom, R.sup.f is a C.sub.2-12 bivalent fluorinated organic group, X is a fluorine atom, a chlorine atom or a hydrogen atom, n is an integer of from 0 to 3, and m is an integer of from 1 to 4,(b) from 30 to 85 mol % of polymer units based on tetrafluoroethylene,(c) from 1 to 30 mol % of polymer units based on propylene, and(d) from 5 to 68.5 mol % of polymer units based on vinylidene fluoride.

Abstract: A method for molding a composite article by injecting a plastics material resin into the fibers within a mold by a continuous web of fibers that is laid in a mold in such fashion that a honeycomb structure is produced without the web crossing itself.

Abstract: A bimodal, crosslinked toner resin can be prepared in non-aqueous solvent, e.g., toluene, using standard solution polymerization techniques. The resin-forming process prepares a precursor resin from ethylenically unsaturated monomer(s), and then grafts maleic anhydride onto the precursor resin to form a modified precursor resin. The modified precursor resin is reacted with a polyfunctional molecule, e.g. a diol, to provide a crosslinked resin. The process is preferably conducted in the presence of a low molecular weight polymeric additive, e.g., polystyrene, to provide a bimodal as well as crosslinked toner resin composition. With the addition of a colorant, a toner powder may be formed.

Abstract: Amorphous copolymer of fluoromonomer, such as tetrafluoroethylene, with vinyl ester, such as vinyl acetate, having a substantially uniform composition is made by aqueous dispersion polymerization by maintaining essentially constant the proportion of the fluoromonomer and vinyl ester copolymerizing with one another. In one embodiment, this proportion consistency is obtained by reducing the agitation rate of the aqueous polymerization medium during the copolymerization reaction at constant fluoromonomer feed pressure within the polymerization reactor.

Abstract: Disclosed herein are copolymers of tetrafluoroethylene and n-alkyl trifluorovinyl ether which further contain either curesite repeat units and/or iodine. Such curesite repeat units, upon exposure to free radicals, may crosslink the copolymers. The iodine is introduced by carrying out free radical polymerization in the presence of an organic iodide chain transfer agent. The polymers according to the invention are especially useful as elastomers and/or as molding resins for articles or parts that may be exposed to a basic environment. The preparation of such polymers by aqueous emulsion polymerization is also disclosed.

Abstract: Polyethylene having a broad molecular weight distribution, a narrow comonomer distribution and excellent processability is easily and cost effectively made using stereoisomeric mixtures of bridged metallocene catalysts containing cycloalkadienyl ligands with facial chirality.

Abstract: Novel mixtures of perfluoroalkyl halides and derivatives thereof are described. These mixtures contain some compounds with a straight perfluoroalkyl group and some with a branched perfluoroalkyl group. Methods of preparation and use are also described.

Abstract: The invention relates to a novel process for the production of mouldings, in particular contact lenses, in which a water-soluble, crosslinkable polymer is crosslinked in solution, and to mouldings, in particular contact lenses, obtainable by this process. The present invention likewise relates to novel water-soluble, crosslinkable polymers, in particular those comprising units of formula (III or IIIa), in which R.sub.1 and R.sub.2, independently of one another, are hydrogen, a C.sub.1 -C.sub.8 alkyl group, an aryl group or a cyclohexyl group, where these groups can be monosubstituted or polysubstituted, R.sub.3 is hydrogen or a C.sub.1 -C.sub.4 alkyl group, and R.sub.

Abstract: This invention relates to the controlled molecular weight production of macromonomers and polymers with terminal conjugated double bonds from starting monomers including, but not limited to substituted butadienes. The terminal diene end thus produced is also a potential reaction site for further polymerization or functionalization. The molecular weight is controlled by use of Co chain transfer catalysts and appropriate process conditions.

Abstract: Resins for use in chemically amplified resists are represented by the general formula (I): ##STR1## wherein R.sub.1 is t-butyl or tetrahydropyranyl; R.sub.2 is hydrogen or methyl; n and m are integers; and the ratio n/((m+n) ranges from 0.1 to 0.9. Methods for manufacturing the resins comprise reacting a monomer represented by the formula (II): ##STR2## with a monomer represented by the formula (III): ##STR3## to form a copolymer represented by the formula (IV): ##STR4## wherein R.sub.1 and R.sub.2 are defined as above; and hydrolyzing acetoxy groups contained in the copolymer represented by the formula (IV) to form the resin compositions.

Abstract: Hardeners for elastic epoxy resin systems, obtained by reaction of(A) reaction products of epoxide compounds (A1) with sterically hindered amines (A3), and/or(B) cyclic carbonates prepared from the compounds (A) and carbon dioxide, and/or(C) cyclic carbonates prepared from reaction products(C1) of epoxide compounds (C11) with polyoxyalkyleneamines (C13) and carbon dioxide, and, if desired(D) additional epoxide compounds or unreacted residues of the initial epoxides for the preparation of (A), (B) and (C), with(E) polyamines having at least two secondary amino groups, and(F) if desired, further reactants, each of the epoxide compounds (A1) and (C11) containing at least two epoxide groups, and it being possible for monoepoxides to be admixed in each case, if desired.

Abstract: The invention provides a novel polymer comprising a recurring unit of formula. (1) wherein R.sup.1 is hydrogen or methyl, R.sup.2 is hydrogen or acid labile group, at least one R.sup.2 being hydrogen and at least one R.sup.2 being an acid labile group, and n=2 or 3. The polymer's Mw is 3,000-300,000. Blending the polymer as a base resin with an organic solvent and a photoacid generator yields a chemically amplified positive resist composition.

Abstract: An epoxy curing agent comprising a heterocycle-containing compound having a backbone clain selected from the group consisting of polyether, polyvinyl, polyester, polyamide, polycarbonate, and novolac chains and at least two heterocyclic groups of the following general formula (1) as side chains, and a one-component (type) epoxy resin composition comprising said epoxy curing agent and a polyepoxy compound, ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each represents hydrogen, straight-chain or branched C.sub.1 to C.sub.6 alkyl or alkenyl, or C.sub.6 to C.sub.8 aryl; or R.sup.1 and R.sup.2, taken together with the adjacent carbon atom, represents C.sub.5 to C.sub.7 cycloalkyl; R.sup.3 represents C.sub.1 to C.sub.10 alkylene. The object is to provide the one-component (type) epoxy resin composition having fast-curing feature, an improved storage stability, and an improved degree of workability.

Abstract: The present invention relates to superabsorbent cross-linked polymers for watery liquids, which are built-up of partially neutralized monomers having monoethylenlcally unsaturated acid groups, optionally further monomers copolymerizable therewith, as well as polymers optionally suitable as graft basis, and which can be manufactured by using a cross-linker/monomer combination ofCH.sub.2 .dbd.CHR.sup.6 --CO--(OCHR.sup.3 --CHR.sup.3).sub.z O--CH.sub.2 --CHR.sup.6 .dbd.CH.sub.2CH.sub.2 .dbd.CHR.sup.6 --R.sup.5 --(OCHR.sup.3 --CHR.sup.3).sub.v OR.sup.4R.sup.1 --?O(CHR.sup.3 --CHR.sup.3 O).sub.u --CO--R.sup.2 !.sub.x, and/or di- or triallylamine and/or bisacrylamidewithR.sup.1 : multivalent C2-10-alkyl,R.sup.2 : linear or branched C2-10-alkenyl,R.sup.3 : H, CH.sub.3, C.sub.2 H.sub.5,R.sup.4 : H, linear or branched C1-10-alkyl,R.sup.6 : CO, CH.sub.2R.sup.8 : H, CH.sub.

Abstract: The present invention is directed to a porous copolymer micro-particle having a high oil absorbency.

Abstract: Radiation-sensitive compositions comprising a substance which forms acid under the action of actinic radiation and polymers based on combination of different repeating units derived from hydroxy styrene and hydroxy-vinylcyclohexane derivatives wherein a portion of the hydroxyl groups are replaced with either acid-labile acetal or ketal protecting groups and where a portion of the repeating groups comprise two crosslinked species connected via the protecting groups.

Abstract: There is a need for polymers which are utilized in automotive interiors which offer good color stability as well as a high level of heat and ultraviolet light resistance. It is particularly critical for polymers which are utilized in making skin compounds for automotive instrument and door panels to have excellent color stability as well as excellent heat and ultraviolet light resistance.

Abstract: A shelf-stable fast-cure aqueous coating is disclosed. The coating contains an anionically stabilized latex, a polyfunctional amine and a volatile base in an amount sufficient to deprotonate the conjugate acid of the amine.