摘要:
The invention relates to a recycable, heat-sealable plastic film for hermetically sealing plastic containers, comprising at least two layers which mutually adhere, (i) a support layer comprised of an impact resistant polystyrene resin and (ii) a sealing layer consisting essentially of: a) 20-100 weight % of a copolymer P consisting essentially of:(p1) 20-90 weight % methyl methacrylate and/or ethyl methacrylate;(p2) 10-80 weight % of at least one monomer of formula I ##STR1## where R.sub.1 represents an C.sub.3-24 alkyl group; and (p3) 0-10 weight %, preferably 1-8 weight %, of a monomer which is copolymerizable with and different from the monomers (p1) and (p2); and(b) 0-80 weight % of a block copolymer containing styrene blocks.
摘要:
This invention relates to plastic containers hermetically sealed with a peelably heat-sealable plastic film comprised of a polymeric mixture comprised of 1-99 parts by weight (pbw) of an impact-resistant polystyrene resin and 99-1 pbw of a copolymer consisting essentially of:p1) 20-90 weight % methyl methacrylate, ethyl methacrylate or a mixture thereof;p2) 10-80 weight % of at least one monomer of formula (I): ##STR1## and where R.sub.1 represents an alkyl group with 3-24 C atoms; andp3) 0-10 weight %, preferably 1-8 weight %, of a monomer which is copolymerizable with and different from the monomers (p1) and (p2).
摘要:
The invention relates to a polymerization process for the production of polymethacrylate molding compounds having high heat deflection temperature and high stability against thermal degradation, are prepared by polymerizing methacrylate monomer in a reaction medium such that at least 70 wt. % of the polymethacrylate molding compound is produced at a monomer concentration in the reaction medium of at least 5 mol per liter.
摘要:
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.
摘要:
Compatible polymer mixtures which consist of two polymer components which are(A) 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, and(B) 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, and R.sub.4 is hydrogen or an alkyl gorup with 1-12 carbon atoms, --CHR.sub.5 R.sub.6 stands for an aliphatic or araliphatic hydrocarbon group with 5-24 carbona atoms.
摘要:
Compatible polymer mixtures of a polymer component which contains cyclohexyl (meth)acrylate as a monomer and a polymer component which contains .alpha.-methyl styrene as a monomer.
摘要:
The invention relates to a heat-sealable plastic film PF with an at least two-stage construction ranging in thickness up to 400 micrometer, that is suitable for tightly sealing plastic containers, comprising:a) a high molecular weight or crosslinked polymer P with a molecular weight in excess of 50,000 and a glass transition point Tg of
摘要:
Graft polymerizates on the basis of acrylates and methacrylates, comprise one or more graft monomers of the formula (I) ##STR1## where R.sub.1 stands for a hydrocarbon group having 2-24 carbon atoms and a base polymer of which 55-100 wt. % is synthesized from one or more monomers of the formula (II) ##STR2## wherein R.sub.2 stands for a hydrocarbon group having 2-24 carbon atoms, provided that the groups R.sub.1 and R.sub.2 exhibit Van-der-Waals volumes which differ by less than 30%, and that at least 10 wt. % based on the total monomers of formula (I) are grafted on the base polymer.
摘要:
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).
摘要:
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.