Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
59 words
combining said step (1) rubber-coated latex particles with a. a monomeric material consisting of liquid monomeric vinyl chloride and not more than a total of 10 percent/wt. of one or more monovinylidene monomers copolymerizable with vinyl chloride in aqueous suspension, and, if necessary, b. a peroxygen polymerization catalyst, c. a polymerization suspension or dispersing agent, and d. water, and
Claim 2
Dependent Claim
90 words
The method as defined in claim 1 and further characterized by the intermediate step of coagulating said step (1) latex product to form an aqueous suspension of polymeric material before employment in step (2), by said vinyl chloride resin latex seed particles of step (1) being polyvinyl chloride averaging from about 250 to about 1,250 A in diameter, by said (2) (a) monomeric material consisting entirely of liquid vinyl chloride, and by said step (2) polymerization being a suspension polymerization effected on the coagulated suspension of step (1) polymeric material.
Claim 3
Dependent Claim
135 words
The method as defined in claim 1 and further characterized by said step (3) polymerization being a polymerization in aqueous suspension employing an organic peroxygen catalyst soluble in said step (2) (a) monomeric material producing directly a suspension of marco-granular resin in water and by the additional fourth and fifth consecutive steps of (4) blending the step (3) aqueous suspension product with sufficient of an aqueous suspension of a macro-granular hard vinyl chloride resin similar to that deposited in step (3) but not containing a rubbery material to produce a blended suspension of resinous product containing an average of from about 3 to about 6 parts/wt. of said rubbery, gelleD acrylate copolymer for every 100 parts/wt. of total vinyl chloride resin therein and (5) dewatering said blended suspension and drying the resulting dewatered polymeric solids.
Claim 4
Dependent Claim
57 words
effecting polymerization of said step (2) (a) monomeric material in the resulting aqueous medium to produce a polymeric product containing said rubbery acrylate coated latex particles encased in a matrix of hard, vinyl chloride resin, said last-named polymeric product containing from about 3 to about 65 percent/wt. of its total weight of said rubbery, gelled acrylate copolymer.
Claim 5
Dependent Claim
273 words
The method as defined in claim 1 and further characterized by said vinyl chloride seed resin particles of step (1) being particles of polyvinyl chloride averaging from about 250 A to about 800 A in average diameter, by said rubbery gelled acrylate copolymer of step (1) being a copolymer of n-butyl acrylate and from about 1 to about 4 percent/wt. of a glycol diester of acrylic or methacrylic acids, by said step (2) (a) monomeric material consisting entirely of liquid vinyl chloride and said step (3) being a polymerization in aqueous suspension in the presence of a said step (2) (b) peroxygen catalyst soluble in said liquid vinyl chloride and a said step (2) (c) colloidally active suspension agent, and by the additional fourth, fifth and sixth consecutive steps of (4) blending the step (3) aqueous suspension of product with sufficient of an aqueous dispersion of macro-granular form of a polyvinyl chloride diluent resin not containing a rubbery material to produce a blended suspension the solids contents of which average from about 3 to about 6 parts/wt. of said gelled butyl acrylate copolymer for every 100 parts/wt. of total polyvinyl chloride therein, (5) dewatering the resulting blended suspension and drying the resulting blended polymeric solids, and (6) masticating the resulting dried blended polymeric solids of step (5) under shear at a temperature between about 350* and about 440*F. to produce a homogenous, fluxed and fused resinous product exhibiting high resistance to impact and containing at least a portion of its content of rubbery, gelled butyl acrylate copolymer as a more or less continuous network distributed through a matrix of hard, rigid polyvinyl chloride.
Claim 6
Dependent Claim
25 words
The unmasticated polymerization product of the method of claim 1 in which said gelled acrylate copolymer is present as a more or less continuous network.
Claim 7
Dependent Claim
8 words
The unmasticated, blended polymerization product of claim 3.
Claim 8
Dependent Claim
7 words
The masticated, blended product of claim 4.
Claim 9
Dependent Claim
174 words
A rigid polymerization product comprising (1) small seed resin nuclei particles averaging between about 250 and 800 A in diameter of a vinyl chloride resin coated with a thin coating of a rubbery, gelled copolymer of an alkyl acrylate averaging between about 125 and about 350 A in thickness, said gelled copolymer being a copolymer of a monomeric material free of conjugated unsaturation and consisting of an alkyl acrylate in which the alkyl group contains from two to four carbon atoms and from about 1 to about 4 percent/wt. of a glycol diester of acrylic or methacrylic acids and said gelled acrylate copolymer being soluble in toluene at room temperature to the extent of less than 10 percent/wt., enclosed in (2) a matrix of hard polyvinyl chloride resin, the said product containing between about 10 percent and about 25 percent/wt. of the said gelled acrylate copolymer dispersed in said product as a more or less continuous network exhibiting at 20,000X magnification an electron microscope photomicrograph similar to that of FIG. 3 of the drawings.
Claim 10
Dependent Claim
226 words
A rigid polymerization product comprising (1) small seed resin nuclei particles averaging between about 250 and about 800 A in diameter of a crosslinked vinyl chloride resin coated with a grafted thin coating of a rubbery, gelled copolymer of an alkyl acrylate between about 125 and about 350 A in thickness, said crosslinked vinyl chloride seed resin being prepared by copolymerizing a monomeric material consisting of vinyl chloride and from about 0.25 percent to about 5 percent/wt. of a non-conjugated crosslinking monomer containing at least tWo CH2 C< groups per molecule of dissimilar polymerizability with vinyl chloride in aqueous dispersion and said gelled copolymer being prepared from a monomeric mixture free of conjugated unsaturation and consisting of an alkyl acrylate in which the alkyl group contains from two to four carbon atoms and from about 1 percent to about 4 percent/wt. of a glycol diester of acrylic or methacrylic acids and said gelled copolymer being per se soluble in toluene at room temperature to the extent of less than 10 percent/wt., enclosed in (2) a matrix of a hard polyvinyl chloride resin, the said product between about 10 and about 25 percent/wt. of the said gelled acrylate copolymer dispersed in said product as a more or less continuous network exhibiting, at 20,000X magnification, an electron microscope photomicrograph similar to that of FIG. 3 of the drawings.