摘要:
Graft copolymers having a diene rubber core surrounded by at least two different shells improve the impact strength under multi-axial stress of thermoplastic polyester moulding compositions.
摘要:
Recovery of thermoplastic polymer solids from dispersions thereof by coagulation and subsequent washing of the solids is improved by contacting the polymer in the coagulation stage or the washing stage or in both stages with at least one tricarboxylic acid of the formula ##STR1## wherein X is a single covalent bond, --CH.sub.2 -- or --C.sub.2 H.sub.4 -- and R is H, --OH or ##STR2##
摘要翻译:通过凝结和随后的固体洗涤从其分散体中回收热塑性聚合物固体,通过使聚合物在凝固阶段或洗涤阶段或两个阶段中与至少一种下式的三羧酸接触,其中X为 单共价键,-CH 2 - 或-C 2 H 4 - ,并且R为H,-OH或
摘要:
Polymer mixtures having high tensile strength and good tear propagation resistance, consisting of(A) from 10 to 95 parts by weight of a graft polymer,(B) from 0 to 75 parts by weight of a thermoplastic resin component and(C) from 5 to 60 parts by weight of a copolymer having a sequence type of structure corresponding to the idealized formula (I)(A--X--B).sub.n (I) whereinA=polymer of a cyclic carbonate,B=polymer of another cyclic ester andX=middle member containing partial structures of both A and B.
摘要:
Multi-block copolymers of recurring structural units of polysiloxanes and recurring structural units of aliphatic polyesters, polyethers or polyetheresters with rubber properties, the individual polymeric blocks constituting rubber-type products with glass transition temperatures below practical usefulness and a process for their production.
摘要:
A graft polymer is obtained from a completely broken latex of an acrylate rubber which is suspended in water and from copolymerisable monomers, in the absence of a suspending agent, which graft polymer may be distributed in thermoplastic polyesters to form particles having a relatively small average diameter.
摘要:
This invention relates to a process for the graft polymerization of (A) from 95 to 40 parts, by weight, of at least one ethylenically unsaturated monomer in the presence of (B) from 5 to 60 parts, by weight, of a partially or completely cross-linked rubber, in which the one or more than one monomer (A) and rubber (B) in the form of a latex or of a dispersion in an organic solvent are polymerized in an aliphatic hydrocarbon as reaction medium at from 30.degree. to 100.degree. C., using a radical forming initiator, and the graft polymerization product obtained as a sedimenting suspension of particles having an average diameter of from 5 to 1,000 .mu.m is isolated.
摘要:
ABS-moulding compositions of (a) 5 to 70% by weight of one or more graft products and (b) 95 to 30% by weight of one or more thermoplastic resins with a content of 0.05 to 2.0% by weight (based on total mixture) of a silico urethane derivative to improve notched impact strength.
摘要:
The invention relates to high-impact polyether sulfone molding compositions containing aromatic polyether sulfones, diene graft polymers and, optionally, other thermoplastic resins, at most half the aromatic polyether sulfone being replaceable by other thermoplastic resins.
摘要:
The invention relates to a process for the production of graft polymers of resin-forming monomers on a rubber in which a very high graft yield is obtained by the use of an initiator system of an organic hydroperoxie and ascorbic acid. The graft polymers obtained are suitable as thermoplastic molding compositions or as constituents thereof.
摘要:
This invention relates to graft polymers produced from:(1) an elastomer component having glass transition temperatures below 0.degree. C. as the graft base; and(2) graft monomers corresponding to the following general formula: ##STR1## wherein R.sup.1 represents H or a C.sub.1 -C.sub.4 alkyl radical;R.sup.3 represents H, phenyl or a C.sub.1 -C.sub.8 alkyl radical;R.sup.2 represents H, a C.sub.1 -C.sub.10 alkyl or C.sub.6 -C.sub.12 aryl radical or --OR.sup.4 ; andR.sup.4 represents C.sub.1 -C.sub.8 alkyl or C.sub.6 -C.sub.12 aryl optionally substituted by alkyl groups, O-containing or N-containing groups;X represents a single bond, a C.sub.1 -C.sub.10 alkylene or C.sub.6 -C.sub.12 arylene radical, ##STR2## Y represents --O--Z--, --NH--Z--; and Z represents a C.sub.1 -C.sub.10 alkylene or C.sub.6 -C.sub.12 arylene radical; and, optionally, other olefinically unsaturated monomers.