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Class Information
Number: 521
Name: Synthetic resins or natural rubbers -- part of the class 520 series >
Description: This Class is directed to (a) ion-exchange polymers and process for their preparation, (b) processes of treating scrap or waste product containing solid organic polymer to recover a solid polymer therefrom, and (c) cellular products (such as foams, pores, channels, etc.) and processes of preparing such products. See Subclass References to the Current Class, below.










Class Number Class Name No. of Patents
521/909

Blowing-agent moderator, e.g., kickers, etc.

66
521/913

Cell forming in absence of external heat

11
521/901

Cellular polymer containing a carbodiimide structure

61
521/902

Cellular polymer containing an isocyanurate structure

297
521/903

Cellular polymer having reduced smoke or gas generation

55
521/920

Cellular product containing a dye or pigment

19
521/916

Cellular product having enhanced degradability

34
521/905

Hydrophilic or hydrophobic cellular product

182
521/907

Nonurethane flameproofed cellular product

213
521/908

Nucleating agent for cellular product

56
521/918

Physical aftertreatment of a cellular product

168
521/910

Plural blowing agents for producing nonpolyurethane cellular products

136
521/906

Polyurethane cellular product containing unreacted flame-retardant material

174
521/914

Polyurethane cellular product formed from a polyol which has been derived from at least two 1,2 epoxides as reactants

124
521/904

Polyurethane cellular product having high resiliency or cold cure property

87
521/921

Preparing a nonpolyurethane cellular particle from a nonparticulate material

18
521/912

Separated reactive materials utilized in preparing cellular product

8
521/919

Sintered product

70
521/917

Specialized mixing apparatus utilized in cell forming process

97
521/911

Surfactant for other than polyurethane cellular product

24
 

Synthetic resins (class 520, subclass 1)

 
521/50

Cellular products or processes of preparing a cellular product, e.g., foams, pores, channels, etc.

291
521/151

Cellular polymer derived from tar, pitch, bitumen, asphalt, or plant material of unknown constitution, e.g., nut shell liquor, etc.

25
521/182

Cellular product derived from a -c-c(=x)-x containing reactant wherein x is a chalcogen atom, e.g., phthalic acid, etc.

295
521/183

Nitrogen containing reactant

151
521/184

Nitrogen reactant contains at least two amino nitrogen atoms

203
521/185

Carbocyclic reactant containing -c-c(=x)-x, e.g., containing carboxyl, etc.

145
521/155

Cellular product derived from a -n=c=x containing reactant wherein x is a chalcogen atom

602
521/161

N=c=x reactant contains a heterocyclic ring

63
521/162

N=c=x reactant contains atoms other than carbon and hydrogen and other than nitrogen and chalcogen as part of the n=c=x group

66
521/159

N=c=x reactant having at least two c-nh-c(=x)- groups, e.g., prepolymers, etc.

686
521/160

Two or more n=c=x reactants

313
521/170

With -xh reactant wherein x is a chalcogen atom

759
521/174

-xh reactant contains a c-x-c group

1057
521/177

C-x-c reactant contains a carbocyclic ring, e.g., aromatic, etc.

70
521/175

C-x-c reactant contains a carbohydrate group

127
521/176

With non -c-x-c- containing reactant

266
521/172

-xh reactant contains a c=x group, e.g., carboxylic acid ester, etc.

540
521/173

With non -c=x containing reactant

324
521/171

-xh reactant contains a halogen atom

82
521/157

With a c-c(=x)-xh or c-c(=x)-x-c(=x)-c- reactant wherein x is a chalcogen atom, e.g., carboxylic acid or anhydride, etc.

126
521/158

With ketone, aldehyde, or aldehyde derivative

68
521/163

With nitrogen containing reactant

467
521/164

Nitrogen reactant contains a c-xh group wherein x is a chalcogen atom and wherein the c atom is not double-bonded to a chalcogen atom

278
521/167

Nitrogen reactant contains a n-(c-c-o)-group

424
521/166

Nitrogen reactant contains a nitrogen containing heterocyclic ring

102
521/165

Phosphorus containing reactant

49
521/168

With phosphorus containing reactant

71
521/169

Phosphorus reactant contains a -o-(c-c-o-)-group

74
521/156

With three-membered heterocyclic reactant containing two carbon atoms and a hetero atom (i.e., nitrogen or a chalcogen atom)

57
521/180

Cellular product derived from a phenol, phenol ether, or inorganic phenolate reactant

231
521/181

With reactant which is an aldehyde or aldehyde derivative

225
521/178

Cellular product derived from a reactant containing two or more three membered heterocyclic rings wherein two of the ring members are carbon atoms and the remaining ring member is a chalcogen atom

142
521/179

With -c(=x)-x containing reactant wherein x is a chalcogen atom

22
521/153

Cellular product derived from aluminum or heavy metal containing reactant

27
521/152

Cellular product derived from boron containing reactant

18
521/142

Cellular product derived from ethylenically unsaturated reactants only

400
521/145

From acyclic mono-unsaturated halogenated reactant

363
521/143

From acyclic mono-unsaturated hydrocarbon as only reactant

530
521/144

Interpolymer

172
521/146

From aromatic reactant

592
521/148

With conjugated diene reactant

105
521/147

With oxygen or nitrogen containing reactant

191
521/149

From oxygen containing reactant

583
521/150

From reactant containing two or more ethylenic unsaturated groups

267
521/189

Cellular product derived from reactant containing a carbon to chalcogen bond

326
521/186

Cellular product derived from reactant which is an aldehyde or aldehyde derivative

38
521/187

Nitrogen containing reactant

106
521/188

Nitrogen reactant contains a -n-c(=x)-n group wherein x is a chalcogen atom, e.g.,urea, etc.

89
521/154

Cellular product derived from silicon containing reactant

430
521/134

Cellular product derived from two or more solid polymers or from at least one solid polymer and at least one polymer-forming system

792
521/137

At least one polymer is derived from a -n=c=x reactant wherein x is a chalcogen atom or wherein the polymer-forming system contains the same type of reactant

751
521/138

At least one polymer is derived from a polycarboxylic acid or derivative and a polyol or wherein the polymer-forming system containing the same type of reactants

314
521/136

At least one polymer is derived from an aldehyde or derivative or wherein the polymer-forming system contains the same type of reactant

180
521/139

At least one polymer is derived from an ethylenically unsaturated aromatic reactant or wherein the polymer-forming system contains the same type of reactant

579
521/140

At least one polymer is derived from reactant containing two or more ethylenic groups or wherein the polymer-forming system contains the same type of reactant

333
521/135

At least one polymer is derived from reactant containing two or more three membered heterocyclic rings having two carbon atoms and one chalcogen atom or polymer-forming system contains the same type of reactant

132
521/99

Cellular product formation prior to or during solid polymer formation in the presence of a stated ingredient other than water

348
521/114

Ingredient contains a -c-x-c- group wherein x is a chalcogen atom and none of the c atoms bonded to the chalcogen are double-bonded to an additional chalcogen atom

240
521/116

-c-x-c- compound contains a -c-xh group wherein x is a chalcogen atom

158
521/115

-c-x-c- compound contains a nitrogen atom

182
521/117

Ingredient contains a -c-xh group wherein x is a chalcogen atom and the carbon atom is not double-bonded to a chalcogen atom, phenol, etc.

317
521/118

-c-xh ingredient contains a nitrogen atom

186
521/103

Ingredient contains a boron atom

97
521/105

Boron atom is part of an organic compound

45
521/104

Boron trihalide or complex thereof

8
521/130

Ingredient contains a carbon atom double bonded to oxygen, e.g., carboxylic acid, etc.

617
521/123

Ingredient contains a metal atom

309
521/124

Metal atom is part of an organic compound

228
521/125

Organic metal compound contains a group i or group ii metal atom

320
521/126

Organic metal compound contains tin

169
521/127

Tin compound is dibutyl tin dilaurate or stannous octoate

150
521/106

Ingredient contains a phosphorus atom

136
521/107

Phosphorus atom is part of an organic compound

320
521/108

Organic phosphorus compound contains a phosphorus atom bonded to an atom other than oxygen

181
521/110

Ingredient contains a silicon atom as part an organic compound

244
521/111

Organic silicon atom compound contains an atom other than oxygen, hydrogen, silicon, or carbon

127
521/112

Organic silicon compound contains an ether group

272
521/122

Ingredient contains a silicon atom

307
521/120

Ingredient contains a sulfur atom

93
521/121

Sulfur atom is part of an organic compound

235
521/131

Ingredient contains only carbon and hydrogen atoms, only c and halogen atoms, or only c, h, and halogen atoms

798
521/132

Said ingredient is substantially nonvolatile material, e.g., hydrocarbon waxes, greases, etc.

110
521/128

Ingredient is a nitrogen containing compound

655
521/129

Nitrogen compound contains a nitrogen atom bonded to three carbon atoms and wherein none of the carbon atoms are double-bonded to oxygen

573
521/102

Ingredient is a protein containing material

46
521/113

Ingredient is aldehyde or ketone

71
521/101

Ingredient is bituminous or asphaltic material

42
521/109.1

Ingredient is carbohydrate, or natural resin

157
521/133

Ingredient is gaseous at ambient conditions, e.g., air, oxygen, etc.

136
521/119

Ingredient is inorganic halogen containing material

58
521/100

Ingredient is water settable inorganic composition

82
521/141

Cellular vinyl alcohol polymer

84
521/50.5

Compositions to be polymerized by wave energy in order to prepare a cellular product wherein said composition contains a rate-affecting material; or compositions to be modified by wave energy to prepare a cellular product wherein said composition contains a rate-affecting material; or processes of preparing or treating a solid polymer utilizing wave energy in order to prepare a cellular product

126
521/79

Extruding a solid polymer containing material to form a cellular product

789
521/80

Including solid polymer formation in or during extruding step

50
521/81

System contains a mixture of solid polymer or at least one solid polymer and at least one solid polymer-forming system

390
521/56

Particle which is expandible, process of preparing an expandible particle, or process of expanding a particle to form a cellular product

702
521/60

Adding expanding agent subsequent to solid polymer formation

561
521/59

Expandible system contains two or more solid polymers or at least one solid polymer and at least one polymer-forming system

313
521/58

Expanding utilizing plural expansion steps

185
521/57

Including step of surface coating a particle or process of expanding a surface coated particle

292
521/77

Preparing a cellular product by decomposition of a solid polymer; or process of forming a composition containing a solid polymer which decomposes so as to subsequently form a cellular polymer, or composition therefrom

159
521/78

Preparing a cellular product by spraying a solid polymer containing material

118
521/76

Preparing a cellular product utilizing a stated ingredient which is surface coated or is a discrete solid particle containing a fluid encapsulated therein, processes of forming an expandible composition, containing said stated ingredient or composition therefrom

135
521/65

Process of forming a cellular product from an aqueous latex, aqueous dispersion, or aqueous emulsion containing a solid polymer; process of preparing a latex, dispersion, or emulsion containing a solid polymer which is designed to be formed into a cellular product, or composition thereof

257
521/67

Adding -n=c=x material to a latex, dispersion, or emulsion containing a solid polymer

40
521/68

Adding fibrous material to a latex, dispersion, or emulsion containing a solid polymer

33
521/69

Latex, dispersion, or emulsion contains an additional solid polymer-forming system

51
521/70

Latex, dispersion, or emulsion contains two or more solid polymers

64
521/71

Solid polymer is derived from a conjugated diene monomer

59
521/66

Treating a latex, dispersions, or emulsion containing a solid polymer at 32 degrees f. or below, e.g., freezing, etc.

18
521/72

Utilizing cell forming agent other than air

109
521/82

Process of forming a cellular product subsequent to solid polymer formation in the presence of a stated ingredient, noncellular composition capable of forming a cellular product and containing a stated ingredient, or process of preparing same

339
521/85

Ingredient contains a boron or phosphorus atom

265
521/97

Ingredient contains a carbon atom double-bonded to oxygen, e.g., carbon dioxide, carboxylic acid, etc.

385
521/92

Ingredient contains a metal atom

465
521/93

Metal atom is part of an organic compound

200
521/91

Ingredient contains a silicon atom

316
521/89

Ingredient contains a sulfur atom

218
521/96

Ingredient contains an -o-o- group

142
521/98

Ingredient contains only c and h atoms, only c and halogen atoms, or only c, h, and halogen atoms

484
521/90

Ingredient is a heterocyclic compound

154
521/94

Ingredient is a nitrogen containing compound

292
521/95

Nitrogen compound contains a nitrogen atom bonded to a nitrogen or oxygen atom

272
521/87

Ingredient is aldehyde or ketone

58
521/83

Ingredient is asphaltic, bituminous, or water settable inorganic material, e.g., cement, plaster of paris, etc.

119
521/88

Ingredient is ether, alcohol, or inorganic alcoholate, e.g., phenol, etc.

364
521/86

Ingredient is organic silicon compound

93
521/84.1

Ingredient is protein, carbohydrate, or natural resin

284
521/61

Process of preparing a cellular product by removal of material from a solid polymer-containing matrix without expanding the matrix; composition which is nonexpandible and is designed to form a cellular product by said process; or process of preparing said composition

339
521/63

Cellular product-forming process wherein the removable material is present or is produced in situ during the solid polymer formation step

311
521/62

Mixture of solid polymers present during cell formation

198
521/64

Removing a liquid to form a cellular product

654
521/73

Process of preparing a cellular product of a plastisol of a solid polymer derived solely from ethylenically unsaturated monomers; forming a plastisol of a solid polymer derived solely from an ethylenically unsaturated monomer which is designed to be formed into a cellular product, or composition thereof

71
521/74

By incorporation of material in gaseous state

39
521/75

System contains two or more solid polymers or contains at least one solid polymer and at least one polymer-forming system

53
521/51

Processes of preparing a cellular product having an integral skin

311
521/52

Reticulated cellular product or processes of preparing a reticulated cellular product

100
521/53

Treating a cellular solid polymer by adding a material thereto which reacts with the polymer or forms a composition therewith, or products of said treating process

249
521/55

Treating a cellular solid polymer by adding a material thereto which forms a composition therewith

248
521/54

Treating a cellular solid polymer by adding a solid polymer or solid polymer-forming composition

473
521/25

Ion-exchange polymer or process of preparing

307
521/30

Chemically treated solid polymer

233
521/35

Solid polymer derived from aldehyde or derivative

16
521/36

Treated with nitrogen-containing material

28
521/37

Treated with sulfur-containing reactant

27
521/34

Solid polymer derived from at least one 1,2-epoxy containing reactant

37
521/31

Solid polymer derived from ethylenically unsaturated reactant only

254
521/32

Treated with nitrogen-containing material

317
521/33

Treated with sulfur-containing material

221
521/39

From aldehyde or derivative

27
521/38

From ethylenically unsaturated reactant only

175
521/27

Membrane or process of preparing

725
521/29

Polymer characterized by defined size or shape other than bead or pearl

108
521/28

Previously formed solid ion-exchange polymer admixed with nonreactive material or ion-exchange polymer

305
521/26

Process of regenerating

156
521/40

Process of treating scrap or waste product containing solid organic polymer to recover a solid polymer therefrom

336
521/40.5

Process of treating scrap or waste product containing at least one polymer derived from ethylenic unsaturated monomers only

248
521/46

Treating polymer derived from a monomer containing only carbon, hydrogen, and halogen or only carbon and halogen; or treating a polymer which has been derived from at least one hydrocarbon and which has been subsequently halogenated

73
521/46.5

Treating polymer derived from vinyl chloride monomer

84
521/47

Treating polymer derived from hydrocarbon monomers only

133
521/41

Treating rubber (or rubberlike materials) or polymer derived from a monomer having at least two ethylenic unsaturated moieties

223
521/44.5

Treating with hydrocarbon or halogenated hydrocarbon material

74
521/45.5

Treating with mechanical action and in the absence of a chemically reactive additive or solvent

103
521/42.5

Treating with organic chalcogen-containing material

43
521/43.5

Containing carboxylic acid or anhydride group

41
521/44

Containing hydroxyl group

54
521/43

Containing organic sulfur

41
521/42

Treating with organic nitrogen-containing material

48
521/41.5

Treating with organic phosphorus-containing material

20
521/45

Treating with steam or water

70
521/49.8

Treating polycarbonamide

50
521/48

Treating polyester

291
521/48.5

Treating with alcohol

158
521/47.5

Treating polysiloxane

19
521/49

Treating polyurethane, polyurea (excluding urea-formaldehyde polymers), polyisocyanurate or polycarbodiimide

121
521/49.5

Treating with alcohol or amine

89
521/915

Utilizing electrical or wave energy during cell forming process

65
 
 
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