Abstract: Polymer mixtures of:(A) 2 to 98 wt. % of a polymer containing at least 80 wt. % of the repeating unit --(CH.sub.2 --O)--; and (B) 98 to 2 wt. % of a polymer containing at least to 90 wt. % of a polymer B1 which contains at least 60 wt. % of a monomer of the formula (I) ##STR1## in which R is an alkyl group with 1 to 3 carbon atoms and X is ##STR2## and 80-10 wt. % of a polymer B2 having a glass transition temperature, Tg, below 0.degree. C., and which is covalently bonded with at least 5 wt. % of the polymer containing the monomers of formula I exhibit high solvent resistance and good mechanical properties.

Abstract: Modified rubber compositions comprise by weight about 15-60% of a highly saturated aliphatic rubber such as ethylene-propylene-diene rubber, about 25-80% of acrylate monomer units; and less than about 5% multi-functional monomer units. The compositions exist as amorphous heterogeneously dispersed phases. The first phase comprises the copolymer rubber to which polymers of at least 10% of the other monomer units are grafted. The second phase comprises the other monomers polymerized as homo and copolymers, not grafted to the rubber. Optionally, up to 20% of the composition comprises high index monomer units. The high index monomer units may be copolymerized with the acrylate and grafted to the rubber. Greater than 10% of the monomer units other than rubber are grafted to the rubber. The number average molecular weight of the grafts is between 10,000 and 80,000 daltons.

Abstract: Elastomers based on acrylates, which are comprised, in the amount of at least 40 wt. % and as much as 100 wt. %, of one or more copolymers having a molecular weight>50,000 daltons and comprised of units of:i) acrylate monomers in the amount of 50-95 wt. %, andii) macromonomers comprised of a vinylic group and, covalently bonded with such group, a polyvinyl unit selected from the group of acrylates and methacrylates and having a glass transition temperature Tg at least 60.degree. C. and molecular weight 500-100,000 dalton.

Abstract: A compatible polymer blend consisting essentially of:a) 0.5-99.5 wt. % of homopolymer or copolymer polyoxymethylene component, andb) 99.5-0.5 wt. % of a polymer component which comprises 40-100% of at least one monomer of formula ##STR1## in which R.sub.1 is methyl or ethyl. The blends are suitable for use as engineering plastics.

Abstract: A compatible polymer mixture of two polymers, consisting essentially of:A) 1-99 wt. % of a copolymer having formula I, and ##STR1## B) 99-1 wt. % of a polyalkyl methacrylate prepared from at least one monmer having formula II ##STR2## wherein R.sub.1 is C.sub.1-4 aliphatic hydrocarbon group, R.sub.2 is hydrogen or methyl, R.sub.3 is a C.sub.2-8 non-cyclic aliphatic hydrocarbon group, x is 10-90 wt. % based on the amount of copolymer I and y is 90-10 wt. % based on the amount of copolymer I.

Abstract: A compatible polymer mixture of two disparate polymers consisting essentially of:A) 0.1-99.9 wt. % of a copolymer comprised of the following monomer unitsa) 90-10 wt. % methyl acrylate;b) 10-90 wt. % styrene; andc) 0 to <10 wt. % of one or more other monomeric vinyl compounds, other than methyl acrylate and styrene; andB) 99.9-0.1 wt. % of a polymer comprised of the following monomer unitsa) >90 to 100 wt. % methyl methacrylate; andb) 0 to <10 wt. % of at least one monomeric vinyl compound other than methyl methacrylate.

Abstract: Multi-layer plastic elements containing a polycarbonate core, with a polymethacrylate layer containing a UV absorber, and modified to be impact-resistant, applied to the core, where the polymethacrylate plastic layer is composed of methacrylate copolymers, which form compatible mixtures with polycarbonate, especially the polycarbonate of bisphenol A, exhibit good adhesion between the polycarbonate and the polymethacrylate. The methacrylate copolymers are methyl methacrylate copolymers with (meth)acrylic monomers which contain carbocyclic substituents in the ester group. The protective layer containing UV absorber is applied to the polycarbonate plastic in thickness from 1 to 500 .mu.m by coextrusion or by lacquering.

Abstract: An extruded web of synthetic resin having a scratch resistant coating thereon is made by depositing a material adapted to form a scratch resistant coating onto the return run of at least one of the endless belts of a dual belt continuous casting machine, the coating being transferred to the surface of the web as the extruded web is polished and cooled in the casting machine.

Abstract: Polymer blends composed of two different polymers P1 and P2, which form compatible polymer mixtures where polymer P1 is composed of at least 20 and up to 100% by weight of styrene and polymer P2 is composed of at least 20 and up to 100% by weight of monomers with Formula I ##STR1## where R.sub.1 is hydrogen, methyl or a group ##STR2## and where R.sub.2 or R'.sub.2, are a group ##STR3## where n is 0-3, R.sub.3 is a 5-8 membered heterocyclic ring, optionally substituted, containing at least 2 hetero atoms in the ring, one heteroatom being oxygen, and R.sub.4 is hydrogen or an alkyl group with 1-6 carbon atoms.

Abstract: The invention relates to compatible polymer blends comprised of a polymer component containing cyclohexyl (meth)acrylate as a monomer, and further comprised of a polymer component containing styrene as a monomer.

Abstract: Compatible polymer mixtures which consist of two polymer components which areA) 0.1-99.9% by weight of a polymer P1, which is composed by at least 30% by weight of monomers with Formula I, ##STR1## where R.sub.1 stands for hydrogen or methyl and R.sub.2 for a hydrocarbon group with 1-18 carbon atoms, andB) 99-0.1% by weight of a polymer P2 which is composed of a monomer with Formula II by at least 30% by weight ##STR2## where R.sub.3 stands for hydrogen, methyl or a group --CH.sub.2 --X--CHR.sub.5 R.sub.6, X stands for a group ##STR3## where Z is oxygen or --NR.sub.4 Z' is oxygen or --NR.sub.4, R.sub.4 is hydrogen or an alkyl group with 1-12 carbon atoms, --CHR.sub.5 R.sub.6 stands for an aliphatic or araliphatic hydrocarbon group with 5-24 carbon atoms.

Abstract: An impact resistance modifier for polycarbonate, which is a copolymer, comprising an elastomer and a methyl methacrylate copolymer, which are bonded covalently. The methyl methacrylate copolymer is one that is compatible by itself with polycarbonate resin due to specific comonomers. Such comonomers are aromatic (meth)acrylic esters and (meth)acrylamides, cycloalkyl(meth)acrylamides and cycloalkylmaleimides. Thermoplastic molding compounds comprising polycarbonate and the new impact resistance modifier exhibit excellent impact resistance.

Abstract: Polymer blends composed of two different polymers P1 and P2, which form compatible polymer mixtures where polymer P1 is composed of at least 20 and up to 100% by weight of styrene and polymer P2 is composed of at least 20 and up to 100% by weight of monomers with Formula I ##STR1## where R.sub.1 is hydrogen, methyl or a group ##STR2## and where R.sub.2 or R.sub.2 ', are a group ##STR3## where n is 0-3, R.sub.3 is a 5-8 membered heterocyclic ring, optionally substituted, containing at least 2 hetero atoms in the ring, one heteroatom being oxygen, and R.sub.4 is hydrogen or an alkyl group with 1-6 carbon atoms.

Abstract: The invention relates to a method for recording, storing, and displaying optically readable information in a medium, with the use of a plastic material which can be modified in an optically differentiable way under the action of thermal energy or a form of energy directly convertible into thermal energy. In the method, a polyblend is employed which is comprised of at least two disparate polymers and which are mutually compatible, and which polyblend has an upper critical solution temperature (UCST), whereby an optically differentiable modification of the information storage medium is brought about by the phase transformation from a compatible polyblend above the UCST to the deblended polymers (P1, P2) below the UCST, or the reverse of this transformation.

Abstract: A compatible polymer mixture, comprising:(I) 0.1-99.9 wt. % of a polymer P1, comprised of monomer units of formula I ##STR1## wherein R.sub.1 is hydrogen or a methyl group; and (II) 99.9-9-0.1 wt. % of a copolymer P2, comprised of:30-90 parts by wt. of a methacrylic acid ester monomer of formula II ##STR2## wherein R.sub.2 is methyl or ethyl; 70-10 parts by wt. of a methacrylic acid ester monomer of formula III ##STR3## wherein R.sub.3 is a hydrocarbon group with 3-24 carbon atoms; and 0-10 parts by wt. of a third monomer M which is copolymerizable with but different from the monomers of formulas II and III.

Abstract: This invention concerns transparent polymer mixtures that can be processed thermoplastically consisting of (A) polycarbonates, particularly Bisphenol A polycarbonates, and (B) copolymers of methyl methacrylate and 5 to 40 wt. % of N-substituted maleimides, with the substituent on the imide nitrogen being an optionally substituted cyclohexyl group, in which the copolymer (B) can also be made up of other .alpha.,.beta.-unsaturated monomer units in amounts of 0 to 40 wt. %.

Abstract: A compatible polymer blend consisting of: (I) 0.1-99.9% by weight of a polymerisate P1, which is formed from monomers of formula I: ##STR1## wherein R.sub.1 is hydrogen or methyl, and (II) 99.9-0.1% by weight of copolymerisate P2, which is formed from (a) 5-40% by weight of cyclohexyl methacrylate, (b) 30-70% by weight of a methacrylic ester of formula II: ##STR2## wherein R.sub.2 is methyl or ethyl, (c) 10-50% by weight of a methacrylic ester of formula III: ##STR3## wherein R.sub.3 is a hydrocarbon group having 4-18 carbon atoms, and (d) 0-10 parts by weight of a monomer M which is copolymerizable with monomers of (a)-(c), yet different from these monomers.

Abstract: A scratch resistant coating is applied to one or both surfaces of an extruded thermoplastic synthetic resin web by passing the web through a polishing roll stack wherein at least one of the rolls has thereon a film of a material forming such a scratch resistant coating, the coating being in this way transferred from the roll to the surface of the web.

Abstract: Injection molded parts having a scratch resistant surface are produced by applying a liquid mixture of at least one monomer susceptible of free radical polymerization and having more than one polymerizable double bond and of at least one free radical forming initiator to the forming surface of an injection mold, polymerizing the mixture at least partially, and then injecting a thermoplastic or duroplastic molding composition into the closed mold.

Abstract: A composition universally usable as an impact modifier for synthetic resins comprising(A) from 10 to 80 percent by weight of a polymer of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 is C.sub.5 -C.sub.7 cycloalkyl or such cycloalkyl substituted by C.sub.1 -C.sub.12 alkyl, y has a value such that the corresponding monomer or monomers are from 5 to 50 percent by weight of polymer (A), and x has a value such that the corresponding monomer, together with up to 20 percent by weight of one or more optional comonomers, is the balance by weight, and(B) from 20 to 90 percent by weight of an optionally crosslinked polymer having a glass transition temperature, T.sub.g, below 10.degree. C. and preferably less than -10.degree. C., polymer (B) being at least partially bonded covalently to polymer (A).